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GMC Data Report No. 189
Apatite and Zircon fission track analyses of the following 9 selected well in the NPRA, Alaska: Husky Oil NPR Operations Inc. (U.S. Navy) South Meade Test Well No, 1 (core, 3010'-9321; cuttings, 9890'-9940'); U.S. Navy South Barrow Test Well No. 1 (core, 1200'-2856'); U.S. Navy South Barrow Test Well No. 3 (core, 200'-2869'); Husky OH NPR Operations Inc. (U.S. Navy) East Teshekpuk No. 1 (cuttings, 10610'-10664'); Husky Oil NPR Operations Inc. (U.S. Navy) W.T. Foran No. 1 (core, 7539'-8264'; cuttings, 8810'-8864'); Husky Oil NPR Operations Inc, (U.S.G.S.) East Simpson. Test Well No. 1 (core, 5129.6'- 7738'); U.S. Navy Topagomk Test Well No. 1 (core, 2087'-10393.5'); U.S. Navy East Topagoruk Test Well No. 1 (core, 2016'-3589');,and U.S. Navy Gubik Test Well 'No. 2 (core, 1398') Received 24 October 1991 Total of 51 pages in report Alaska Geologic Materials Center Data Report No. 189 Alaska Division of Geological and Geophysical Surveys Materials Record Center Data File APATITE AND ZIRCON FISSION TRACK ANALYSES OF 9 SELECTED WELLS IN THE NPRA,.ALASKA S.C. Bergman*, S. Kelley#, J. Talbot*,. J. DeCker@ *ARCO Exploration & Production Technology, Atlantic Richfield Co., 2300 Piano P~, Piano, TX 75075 #Dept. Geology, Southern Methodist University, DallaS, TX 75275. · @ARCO AlaSka Inc., Anchorage, AlaSka. 99501 October 15, 1991 GMC Data Report No. 189 Page 01/51 ABSTRACT This report presents apatite fission track length and age data on 18 sedimentary rocks, a granite, and a mff from 9 wells in the NPRA, Alaska. Detrital zircon fission track age data are presented for 13 of these rocks. Detrital apatite fission track 'ages of the sedimentary ,rocks range from 2 to 108 Ma. Confined track lengths in 15 of these rocks average between 7.1 and 14.1 um. Detrital zircon fission track ages of the sedimentary rocks are in the range 162-485 Ma. Apatite and .zircon fission track ages for the tuff are 90 and 100 Ma, respectively. I. INTRODUCTION The age of rocks and the temperature conditions to which they have been subjected are fun_d~mental and insightful parameters in the geological sciences. Fission track analysis is a proven tool for providing constraints on these parameters. This report presents the results of apafite and zircon fission track analyses of selected sedimentary rocks from 9 wells in NPRA. These .data are relevant to the thermal and uplift history and tectonic evolution of the North Slope. IL ROCK DESCRIPTIONS The rocks studied are mainly sandstones and siltstones which range in age from Pre-Mississippian to Cretaceous. Whole core samples (weighing 500- 1000 gm) were used for all analyses, except in the case of the E. Teshekpuk #1 well, for which bottom ditch cuttings were used. III. ANALYTICAL METHODS Conventional heavy liquid and magnetic separation techniques were used to concentrate apatite and zircon in this study. Single grain apatite fission track ages were determined on 20 or more grains from each sample (where possible) using the external detector method following conventional analytical techniques (eg., Naeser, 1979; Gleadow, 1981) by S. Kelley in the laboratories of Southern Methodist University. Apatite ~confmed fission track length distributions were dete ~rmined using oil objectives and otherwise conventional methodologies (eg., Laslett et al., 1982, 1984; Green et al., 1985; 1986). Apafite was mounted in epoxy on a glass slide. Mounts were polished to expose interior grain surf~es, ~hed for 35 ,~sec in a 7% nitric acid solution and irradiated in a 101°-10tu neuron/cma flux for several hours at the Georgia Tech Reactor. Zircon grains were mounted.in FEP teflon tape, polished and etched in NaOH-KOH for 1.5-4 hr. Muscovite detectors were etched in 48% HF for 11 min. Fish Canyon zircon, Durango apatite and NBS glass standards were used to monitor neutron fluence and GMC Data Report No. 189 Page 2/51 gradient and as checks for analytical precision and accuracy. Fission track ages and statistical uncertainties were calculated using thc formulations of Hurford et al. (1984), Galbraith (1981, 1984), Galbraith and Laslett (1985), and Clarke and Carter (1987). IV. ANALYTICAL RESETS Sample details, tmek count ~ apatite fission track ages and track length distributions, zircon fissio~'tmek ages, and grain age and track length histograms are provided in the appendix. Those individuals requiring more information are welcome to contact the authors. V. REFERENCES Clark, A.C.W.V., and Carter, A., 1987. Handling of counting data for fission track dating, Nuclear Tracks Radial Meas. v. 13, pp. 105-110. Galbraith, R.F., 1981. On statistical models for fission track coUnts, Jrn. Math. Geol. v. 13, p. 471478. Galbraith, R.F., 1984. On statistical estimation in fission track dating, Jm. Math. Geol. v. 16, p. 653-669. Galbraith, R.F. and Laslett, G.M., 1985. Some remarks on statistical estimation in fission track da_flog, Nuclear Tracks v. 10,' p: 361-363. Gleadow, A.J.W., 1981. Fission track dating methods: What. are the real alternatives? Nuclear Tracks v. 5, p. 3-14. Hurford, A.J., Fitch, F.J., and Clark, A., 1984. Resolution of the age structure of the detrital zircon populations of two Lower Cretaceous sandstones from the Weald of England by fission track dating, Geol. Mag., v. 121, pp. 269-296. Laslett, G.M., Gleadow, A.J.W., and Duddy, LR,, 1984. The relationship between fission track length and density in apatite, Nuclear Tracks v. 9, p. 29-38. ~ Laslett, G.M., Kendall, W.S.' Gleadow, A.J.W., and Duddy, LR., 1982. Bias in measurement of fission track length distribution, NuClear Tracks v. 6, p. 79-85. Naeser, C.W., 1979. Fission track dating and geological annealing of fission tracks, in Jager, E. and :Hunziker, J.C., (eds.) Lectures in Isotope Geology, Springer Verlag, N.Y., pp. 154-169. GMC Data Report No. 189 Page 3/51 TABLE 1. Subsurface Cores Used in the Present Study Well Name S Meade gl S Barrow '1~ gl S Barrow TW 83 E Teshelcp-k g WT Foran gl E Simpson gl Topagomk gl E Topagoruk gl Depth Apaate Quality ~) Age Length 3010 -$ata,$ A - 4956- ~g.,¢t t0 A 1 8505 R - g~a' 88~-~t~6~. A - 9317'g% f~2~ _ 12~ e. t~ta A 1 l~t. I~/~' A L 2847 t~ 2~f~' - - 2~ ~ 2~' A 1 1750 t~ ~7~g'- - 2430 ~ ~ta' A I 2703 t, ~a~' _ _ 2849 to ~t~ - 7539 t~ 7~g/~ a 1 5129.t'-~/~o ' A L 68~ - ~' - - 7476.~-7~8~' - - 7732,~-17~~ - _ 2087-~atg~' a - 32~-9~?g' A 1 5954'~~ - - ~-~' A 1 9436' a 1 ~0392-/a~OA ~ 2016-1ara' - - 3569-~a~~ - - Gubik ~'/d~. 2 ~ 1398 A L Age Quality: A - >15-20 grains, a - 4-14 grains. Length Quality: L - >35 length measurements, 1 - 1-29 length measurements. Those samples which lack apatite or contain undateable or unmeasurable grains are shown with a dash. GMC Data Report No. 189 Page 4/51 TAGL[ I -I ~ APA1TTE H~ION-.TIL4~ DATA FOI} ti'SA tELLS eom S~TTGIIIC SmATZGtWHXC ~ FT AG[ flU'T) Ul ~ (ItA) Tm'. (*C) (1~) ~iJ TOI~ IlL 97-115 42 . AS,6e_IA ~956 TOMC IlL '113 66 39,8t16 $9~2 TOil~lC II, 113.-1i9 81 28,2t 8 8820 sHueix II 2gs-225 127 1~.~12 9317 .... 9940~ ~. 240-245 140 1.6+_ 2 aFT (NI LoImm (uB) (N] _ . . 26 NO 1L OATA ~ ~.~.6 3 29 11.8+..i;6 11 ]NSIFFICZENT-~ATI1[ 26 NO TL OATA i7 NO 11. OATA SOUfll ~ TEST la~LL W. I OEPTH STRATIGIIIK S11tATIGILAFliZC fi[SENT FT AG[ (FTET) Um AG[ (IIA) Tm'. ('C) (IIA) (N] OFT LOlGm (w) IN) 1280 TORO~flL 97-119 40 67.~_26 28 12.8e_2.6 i 1~06 TOitOICIIL 97-119 40 L8,~16 26 13,5~_1.I 66 2~7 - - - NO APATITE OEPTH SllIATIGIIIZC $11tAT[GSAFHZC FI[SENT FT AGE ~ FT (FTL'T) troT, ~ (IIA) Tm". ('C) (ItA) (N] I. OiGm (w) 2~ T(~0~ Fit. ~7-Ii9 40 1~.~28 29 1~.7!1.8 9 17'~ .... N0 A°ATITE - PYRITE 2~ ~Ilr,~ ~ 1~.-268 40 1~8.~J2 26. 12.8_~.$ 2 27K .... INgtFFICI~ APATITE 28A9 .... N0 ~ATIT[ - PYRITE ixa, m SmATZ(mAI,mC SmATZGI~C I'~ FT AG[ (F'E~r) troT ~ (flA) TOW'. ('C) (M) (N] le~ gt~NllE 332 140 2.~2.2 26NO TL DATA gFT LOb'm (w) #.T. F(iP, AN NO. I STRATI(;BAFliZC smAn(atAFHIC ri[ffliT FT AG[ If. AN Fi' WiT AG[ (IIA) Tot,. ('c) (ItA) (N] 75~9 ~SJB{X m. 11~-131 8~ ~8.2+_21 11 ll.i!i.i 7 8266 LIg~URII[ GL ~ 9~ i6.5+_16 28 lO.i+_.2.1 12 886i ~ ~ ~5 8.7~ i NO 11. OATA , GMC Data Report No. 189 Page 5/51 EAST Slll'S~ NO. ! ~'TRATTGRAPmC STRATXGlUJ'mC m~Em FT ~ WAN FT INIT AGE (ItA) TEll'. ('C) (PA) (NJ I. DIGTH (,-) (NJ ii ii 5129 TQMC FIt. 113-119 55 16.~1~ 20 12.2i._1.6 6~8 .... NO Af'ATITI~ 706 .... NO Af'ATI~ 7732 .... NO APATITE GLIBZIC NO. 2 $1RATZI;I~keHZC STRATIGP. JI,°Ifl:C PRESENT FT AGE: If. AN FT lair ~ (IM) TOt'. ('C) (rlA) [,] ~ (m) iN] 13~8 ~ 11JFF' ~5 &9 89.7,_22 29 IL. lf.l.$ L$ T~AGGRLIC NO. I OB'TH STRATZGI~C STRAI'ZGRAI'mC I~ FT AGE ~ FT (ngr) UmT A~ (IIA) Tel'. ('C) (~) (NJ LDIG1H (m) (NJ 2887 NANU~ I:11. 95 21 86.5,.38 13 ~32A0 T(]I~IC RI. 97-11;3 ;31 76.7,__3020 11.2~__1.17 5954, .... ~CZENT Af)ATITE ~9~ TCN~IC ~. 11~119 ~L 27.2~_ 9 20 12.i~_l.~ 9 ~ SAIX.ffiX:HZT GR. 218-:2M 82 7.~8 15 5.,8 1 · . 10392 C~"V.~ ~ 87 2.8,..2.6 20 7.1t.2.0 EAST T(F~ NO. I S~TZ(aAFmC STmmL, FHZC ~ H ~ ~ FT If(Lrl' Alt: (JLA) TI~. ('C) (Pa) [NJ LENG1H (m) (NJ 2016 .... NO A°ATZTE 2A58 .... NO Af)ATI~ 5569 .... NO k°ATZTE GMC Data Report No. 189 Page 6/51 SAMPLE GRAINS NUMBER COUNTED TABLE 2. - APATITE FISSION-TRACK AGES FOR NPFLA WELLS FOSSIL TRACKS INDUCED TRACKS NEUTRON FLU TRACKS/CI~ # TRACKS TRACKS/CM~- # TRACKS (X 1~) (X 100) COUNTED (X 10e,) COUNTED NEUTRONS/CId ) AGE (STANDARD ERROR) (MA) 95 DA G.I. (MA) CHIZ PROB. MFiANIUM CONTEN GORR (PPM) COEFF SM 3010 20 SM 4056 20 SM 8002 2O SM~3O 2O SM 3O;40 17 SSTW1 1200 20 SBTW1 1996 20 SBTW3 200 20 SBTW3 243O 12 ETESH 10664 20 WTF 7539 11 WTF 8260 20 Y/Ti= 8864 4 ES S129 2O TOP 2087 13 TOP 3240 20 TOP 6490 20 TOP 9436 13 TOP 10392 20 GUBIK 1398 20 0.58 31 0,62 16(3 0.82. 45~6 68 (0.2) 3o 0.52 28 0.67 180 0.84 30.0 59 (8.1) 26 0.78 70 1.41 637 0.86 28.2 37 95 (3.8) 22 O.lO e o.37 111 0.99 14.5 34 >99 (6.1) e 0.02 2 o.~2 ~ 0.02 1.6 6. 70 (1.1) o 0.67 35 0.57 147 0.95 67.3 go (13.0) 46 1.18 125 1.40 744 0.97 48.6 60 (5.2) 30 1.04 77 0.73 271 1.24 104.5 137 (14.3) 80 1.70 60 1.17 206 1.25 108.0 146 (16.5) 79 0.03 3. 1.26 · 542 1.20 2.0 6 >99 (1.2) o.6 1.50 13 0.58 75 0.74 38.2 70 (11.6) 21 1.04 4,8 1.02 234. 0.76 48.6 65 0.04 12 2.01 322 0.78 8.7 16 <1 (2.5) S 0.79 57 1.02 368 1.00 48.2 62 >09 (6.0) 34 2 .943 2 .937 5 .892 I .700 3 .035 2 .834 5 .961 2 .958 3 .959 3 .710 2 .67 4 .730 8 .872 3 .058 1.10 43 1.01 198 1.35 86.5 122 >90 2 .905 (15.0) 61 0.68 33 0.70 174 1.36 76.7 113 >99 2 .935 (14.0) 52 0.33 41 1.00 620 1.38 27.2 38 >90 2 .~1 (4.6) 19 0.07 3 0.76 167 1.39 7.5 24 75 2 .172 (4.4) 2 0.05 4 1.41 605 1.40 2.8 8 >gg 3 .701 (1.4) 1 1.3o 99 0.68 310 1.04 86.7 116 >99 3 .893 (11.5) eg SPONTANEOUS DECAY CONSTANT - 7.03e17/YR GMC Data Report No. 189 Page 7/51 FOSSIL TRACKS ~MdPLE GRAINs TRACKS/GM ~- # TRACKS NUMI~ER COUNTED (X 10~) COUNTED · TABLE 2. - ZIRCON RSSION-TRACK AGES FOR NPRA WELLS INDUCED TRACKS NEUTRON ,~ FLUX _ TRACKS/CSJ~' # TRACKS (X 10 ~r (X 10~) COUNTED NEUTRONS/CM ) AVG. AGE (STANDARD CHI-SQUARED URANIUM ERROR) PROBABlUTY CONTENT CORR. (MA) (~) (PPM) COEFF. ES7476 g 9.20 574 IVISHAK SBTW1 1906 18 5.24 1399 TOROK ~TW3 200. g 4.4~ 470 NANUSHUK · .%"B'ftN3 ~430 12 6.31 722 BARROW SS. SBTW3 2703 14 7.24 1217 SHUBUK TOP 2087 20 5.67 926 TOROK TOP 6490 20 8.32 1651 TOROK WTF 7539 9 11.70 655 SHUBUK WTF 8264 6 7.4~ 317 USBURNE SM4956 20 5.51 922 TOROK SM5992 20 6.12 1674 TOP, OK SM8~20 8 7.36 312 SAG RIVER SS. 7.76 242 6.9 9.24 1235 7.0 10.59 550 6.9 5.91 338 6.9 6.46 543 6.9 14.07 1154 6.4 8.32 1446 6.4 12.25 343 7.0 8.35 177 7.0 10.0 838 7.0 13.29 1818 7.0 11.32 240 7.0 484.8 <1 36 .791 (43.7) 261.6 <1 42 .547 (2e.5) 184.9 <1 49 .833 (17.0) 476.0 <1 27 .~28 (51.4) 441.9 <1 30 .~00 (51.8) 161.8 <1 70 .848 (12.2) 254.3 <1 73 .816 (34.5) 381.2 <1 56 .833 (42.0) 391.8 <1 38 .981 (28.0) 279.9 <1 46 .601 (34.8) 197.2 <1 61 .647 (18.3) 302.3 <1 52 .926 (31.3) GUBIK 1398 5 8.40 1042 NANUSHUK 34.30 2130 7.0 100.0 <1 157 .976 (6.0) SPONTANEOUS DECAY CONSTANT ,- 7,03E17/YR GMC Data Report No. 189 Page 8/51 SAMPLE NAME SM 4956 SM 5992 ~BTW1 1200 SBTW1 1906 TABLE 3 - UNCORRECTED FISSION-TRACK LENGTH MEASUREMENTS FOR NATIONAL TRACK LENGTH (MICRONS) PETROLEUM RESERVE SAMPLES 2.5 3,5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 0 0 0 0 O 0 0 0 0 0 I 2 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 2 4 1 1 0 0 0 0 0 0 0 0 0 0 0 0 I 0 0 1 1 0 ' 1 0 0 0 0 0 0 0 0 0 0 0 1 4 4 13 17 17 9 1 0 0 0 TOTAL # OF TRACKS MEASURED 66 SBTW3 200 0 0 0 0 0 0 0 0 I 0 3 0 3 1 1 0 0 0 9 SBTW3 2430 0 0 0 0 0 0 0 0 0 0 I 1 0 0 0 0 0 0 2 WTF 7539 0 0 0 0 0 0 0 2 0 3 I 1 0 0 0 0 0 0 7 WTF 8260 0 0 1 0 0 0 0 3 2 3 2 I 0 0 0 0 0 0 12 ES 5129 0 0 0 0 0 0 1 3 3 8 7 8 5 0 0 0 0 0 35 T6P'2d87 0 0 0 0 0 0 0 0 0 0 0 3 2 1 0 0 0 0 TOP 3240 0 0 0 0 0 0 0 2 1 2 1 1 0 0 0 0 0 0 TOP 6490 0 0 0 0 0 0 0 0 1 4 1 2 1 0 0 0 0 0 TOP 9436 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOP 10392 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 GUBIK 1398 0 0 0 0 0 0 0 1 0 1 4 12 15 8 4 0 0 0 45 6 7 9 1 SM - SOUTH MEADE NO, 1 SBTW1 - SOUTH BARROW TEST WELL NO. 1 SBTW3 · SOUTH BARROW TEST WELL NO. 3 WTF -, W,T, FORAN NO. 1 ES · EAST SIMPSON NO. 1 GYR · GYR NO. 1 TOP - TOPOGORUK NO. 1 GUBIK ,= GUBIK NO. 2 ETCH TIME' SAMPLE (SEC) TABLE,~ - TRACK LENGTH DATA SUMMARY 95% MEASURED CORRECTED STANDARD CONFIDENCE OF TRACKS . MEAN MEAN DEVIATION INTERVAL MEASURED (MICRONS) (MICRONS) (MICRONS) (MICRONS) SM 4956 25 SM 5992 25 SBTW1 120 25 SBTW1 190 25 SBTW3 200 25 SBTW3 243 25 WTF 7539 25 WTF 8260 25 ES 5129 25 3 12.8 12.8 0.6 0.7 11 11.8 11.6 1.6 0.9 4 12.8 12.4 2.6 2.6 66 13.5 13.3 1.4 0.3 9 13.7 13.5 1.8 1.2 2 12.8 12.8 0.3 0.5 7 11.4 11.2 1.4 1.0 12 10.4 9.8 2.4 1.3 35 12.2 12.0 1.6 0.6 TOP 2087 25 TOP 3240 25 TOP 6490 25 TOP 9436 25 TOP 10392 25 GUBIK 139 25 6 14.1 14.0 0.7 0.6 7 11.2 11.0 1.5 1.1 9 12.4 12.2 1.4 0.9 I 5.8 - - - 2 7.1 6.8 2.5 2.5 45 14.1 14.0 1.3 0.4 GMC Data Report No. 189 Page 10/51 PROJECT NAME: BARROW ARCH DATE: 9127/90 SAMPLE NUMBER: ES 5129 LATITUDE: 70° 55' 04' N LAB NUMBER: SMU LONGITUDE: 54° 37' 05" W REACTOR RUN NUMBER: RR-7-11-90A ELEVATION (M): KB = 30 FT. NEUTRON R.UX: 1.000E+16 MICROSCOPE: OLYMPUS # SPON TRACKS (FLUX) 500 MAGNIRCATION: 1250 X # IND. TRACKS (FLUX) 4000 ROCKTYPE: Torok Fm. SANDSTONE NUMBER OF GRAINS: 20 MINERAl- APATITE AREA USED GRAIN # (SQ. CM) I 8.0E-05 2 4.0E-05 3 4.0E-05 4 2.0E-05 5 2.0E'05 6 2.0E-05 7 4.0E-05 8 2.0E-05 9 4.0E-05 10 2.0E-05 11 2.0E-05 12 2.0E-05 13 2.0E-05 14 2.0E-05 15 4.0E-05 16 8.0E-05 17 4.0E-05 18 8.0E-05 19 4.0E-05 20 2.0E-05 RHO(S) Ns (/CM=) I 1.250E+04 ' I 2.500E+04 3 7.500E*04 =~* 4 Z000E+05 2 1.000E+05 I 5.000E+04 2 5.000E+04 12 6.000E+05 4 1.000E+05 I '5.000E+04 4 2.000E+05 3 1.500E+05 2 1.000E+05 I 5.000E+04 2 5.000E+04 5 6.250E+04 I 2.500E+04 2 2.500E+04 3 7.500E+04 ,3 1.500E+05 RHO(I) Ni. (ICM=) 9 2.250E.05 10 5.000E.05 14 7.000E.05 27 2.700E.06 9 9.000E+05 9 9.000E+05 9 4.500E+05 108 1.080E+07 23 1.150E+06 6 6.000E+05 17 1.700E+06 12 1.200E+06 14 1.400E+06 4 4.000E+05 12 . 6.000E+05 27 6.750E.05 10 5.000E.05 14 3.500E+05 22 1.100E+06 12 1.200E+06 RATIO URANIUM AGE STD. DEV. (Ns/NO (PPM) (MA) (MA) 7.2E-04 57 7.917E+04 368 1.022E+06 0.11 0.10 0.21 0.15 0.22 0.11 0.22 0.11 0.17 0.17 0.24 0.25 0.14 0.25 0.17 0.19 0.10 0.14 0.14 0.25 0.15 0.7 33.2 35.0 1.6 29.8 31.3 2.2 _63.8 40.7 ., . .. 8.6 44.2 23.8 2.9 66:1 25.9 2.9 33.2 35.0 1.4 66.1 51.8 34.6 33.2 10.2 3.7 51.8 28.2 1.9 49.7 53.7 5.4 70.0 39.0 3.8 74.4 48.1 4.5 42.6 32.3 : .- 1.3 74.4 83.2 1.9 49.7 38.0 2.2 55.2 27.0 1.6 29.8 31.3 1.1 42.6 32.3 '3.5 40.7 25.1 3.8 74.4 48.1 3.3 GMC Data Report No. 189 Page 11151 PROJECT NAME~ BARROW ARCH DATE: 9/27190 SAMPLE NUMBER: GUBIK 2 - 1398 LATITUDr=- 71' 09' 46* N LAB NUMBER: SMU LONGITUDE: 56° 34' 44' W REACTOR RUN NUMBERc RR-7-11-90A NEUTRON FLUX: 1.040E+ 16 ELEVATION (M): KB=44 FT. MICROSCOPE: OLYMPUS # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4000 NUMBER OF GRAINS: 20 MAGNIFICATION: 1250 X ROCKTYPE: MINERAL: NANUSHUK GP..TUFF APATITE AREA USED GRAIN # (SQ. CM) I 4.0E-05 2 2.0E-05 3 8.0E-05 4 ?-0E-05 5 2.0E-05 6 8.0E-05 7 8.0E-05 8 ?-0E-05 9 ?-0E-05 10 4.0E-05 11 4.0E-05 12 2.0E-05 13 ?-0E-05 14 2.0E-05 15 2.0E-05 16 2.0E-05 17 2.0E-05 18 4.0E-05 19 4.0E-05 20 4.0E-05 7.0E-04 P~O(S) Ns (/ca=) 6 1.500E+05 3 1.500E+05 2 ?-500E+04 2 1.000E+05 3 1.500E+05 6 7.500E+04 7 8.750E+04 2 1.000E+05 4 7 1.750E+05 4 1.000E+05 3 1.500E+05 3 1.500E+05 3 1.500E+05 4 ?-000E+05 18 9.000E+05 3 1.500E+05 4 1.000E+05 4 1.000E+05 2 5.000E+04 '90 1.286E+05 RHO(I) RATIO URANIUM Ni (/Cid=) (Ns/NO (PPM) 16 8.000E+05 0.38 ?-5 10 1.000E,06 0.30 3.1 7 1.750E+05 · 0.29 0.5 7 7.000E+05 0.29 2.2 18 1.800E+06 0.17 5.5 31 7.750E+05 0.19 2.4 37 9.250E+05 0.19 ?-8 6 6.000E+05 0.33 1.8 9 9.000E+05 0.44 ?-8 19 9.500E,05 0.37 2.9 14 7.000E+05 0.29 2.2 8 8.000E+05 0.38 2.5 8 8.000E+05 0.38 ?-5 13 1.300E,06 0.23 4.0 14 1.400E+06 0.29 4.3 51 5.100E+06 0.35 15.7 14 1.400E+06 0.21 4.3 12 6.000E+05 0.33 1.8 9 4.500E+05 0.44 ~.4 7 3.500E+05 0.29 1.1 310 8.857E+05 0.29 2.7 AGE STD. DEV. (MA) (MA) 115.6 55.6 92.7 61.2 88.3 70.9 88.3 ' 70.9 51.6 514.4 59.9 26.9 58.6 24.3 107_9 514.4 136.8 241.9 113.6 50.5 88.3 50.2 115.6 78.5 115.6 78.5 71.4 45.9 88.3 50.2 108.9 30.3 66.3 4?-3 102.9 59.6 136.8 82.5 88.3 70.9 GMC Data Report No. 189 Page 12/51 PROJECT NAME: SAMPLE NUMBEFI: BARROW ARCH DATE: 9/27/90 GUBIK 2 - 1398 LATITUDE: 71 ° 09' 46' N LAB NUMBER: SMU LONGITUDE: 56° 34' 44" W REACTOR RUN NUMBER: RR-7-11-90Z NEUTRON FLUX: 7.000E+ 15 MICROSCOPE: OLYMPUS # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4OOO NUMBER OF GRAINS: 5 MAGNIRCATION: 1250 X RO(~ TYPE: NANUSHUK GP. TUFF MINERAL: ZIRCON AREA USED RHO(S) GRAIN # (SQ. Cid) Ns (/CM=) 1 1.6E-05 132 8.250E+06 2 4.0E-05 437 1.093E+07 3 4.0E-05 268 · 6.700E+06 4 2.0E-05 140 7.000E+06 5. 8.0E-06 65 8.125E+06 6 0.0E+00 0 ERR 7 0.0E+00 0 ERR 8 0.0E+00 0 ERR 9 0.0E+00 0 ERR 10 0.0E+00 0 ERR 11 0.0E+00 0 ERR 12 0.0E+00 0 ERR 13 0.0E+00 0 ERR 14 0.0E+00 0 ERR 15 0.0E+00 0 ERR 16 0.0E+00 0 ERR 17 0.0E+00 0 ERR 18 0.0E+00 0 ERR 19 0.0E+00 0 ERR 20 0.0E+00 0 ERR 1.2E-04 1042 8.40GE+06 'Ni I:u-loo) 301 3.763E*07 771 3.855E+07 6O8 3.040E*07 330 3.300E+07 120 3.000E+07 0 ERR 0 ' ERR 0 ERR 0 ERR 0 ERR 0 ' ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 2130 3.435E+07 RAllO (Ns/NO · 0.44 0.57 0.44 0.42 0.54 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 URANIUM (PPM) AGE STD. DEV. (MA) (MA) 172.0 176~ 2 139.0 150.9 137.1 ERR ERR ERR ERR ERR · ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR 91.2 10.5 117.6 9.0 91.7 8.0 "8'8.2 ..... 9.8 112.4 18.1 0.0 ERR 0.0 ERR 0.0 ERR · 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 . ERR 0.0 ERR 0.0 ERR · 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 157.1 GMC Data Report No. 189 Page 13/51 PROJECT NAME: I~~~~,-..~ ........... ~'.'~-J:'-"--::-:::~l BARROW ARCH DATE: 9119/90 SAMPLE NUMBER: SM 3010 LAB NUMBER: SMU REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUX: 8.200E* 15 # SPON TRACKS (FLUX) 500 # IND. TR~CKS (FLUX) 4000 NUMBER OF GRAINS: 20 LATITUDE: 70'36'54' N LONGITUDE: 156'53'24' W ELEVATION (M): KBI60 FT. MICROSCOPE OLYMPUS MAGNIRCATION: 1250 X ROCKTYPE: TOROK FM. MINERAI~ APATITE AREA USED GRAIN # (SQ. CM) Ns I 4.0E-05 9 2 2.0E-05 1 3 2.0E-05 0 4 4.0E-05 1 5 2.0E-05 3 6 2.0E-05 4 7 1.6E-05 2 8 4.0E-05 2 9 2.0E-05 3 10 1.6E-05 0 11 4.0E-05 2 12 4.0E-05 1 13 4.0E-05 2 14 2.0E-05 1 15 4.0E-05 0 16 2.0E-05 0 17 2.0E-05 0 18 2.0E-05 0 19 2.0E-05 0 20 2.0E-05 0 RHO(S) (/CM~) 2.250E+05 5.000E+04 0.000E+00 2.500E+04 1.500E+05 2.000E+05 1.250E+05 5.000E+04 1.500E+05 0.000E+00 5.000E+04 2.500E+04 5.000E+04 5.000E+04 0.000E+00 0.000E.00 0.000E+00 0.000E*00 0.000E+00 0.000E+00 5.3E-04 31 5.827E+04 RHO(I) Ni (/C~~) 50 2.500E+06 3 3.000E+05 I 1.000E+05 3 1.500E+05 10 1.000E+06 32 3.200E+06 8 1.000E+06 16 8.000E+05 10 1.000E+06 2 2.500E*05 5 2.500E+05 6 3.000E+05 6 3.000E+05 5 5.000E+05 I 5.000E*04 I 1.000E+05 1 1.000E+05 2 2.000E+05 2 Z000E+05 2 2.000E+05 166 6.241E+05 RATIO 0.18 0.33 0.00 0.33 0.30 0.13 0.25 0.13 0.30 0.00 0.40 0.17 0.33 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.19 UFI/~IUM AGE STD. DEV. (PRVI) ('{VIA)(MA) 9.8 44.0 16.1 1.2 81.3 93.9 0.4 0.0 340.7 0.6 81.3 ' 93~9 3.9 73.2 4~3 12.5 30.6 16.3 3.9 61.0 4&3 3.1 30.6 23.0' 3.9 73.2 4&3 1.0 0.0 148~9 1.0 97.4 81.6 1.2 . 40.8 44.1 1.2 81.3 66.5 .. 2.0 46.9 5~6 0.2 0.0 340.7 0.4 0.0 340.7 0.4 0.0 340.7 0.8 0.0 148.9 0.8 0.0 148.9 0.8 0.0 148.9 2.4 GMC Data Report No. 189 Page 14/51 PROJECT NAME: BARROW ARCH DATF~ ::'~:!~{~ 9119/90 SAMPLE NUMBEP¢ SM 4956 LATrnJDE: 70°36'54" N LAB NUMBER: SMU LONGITUDF~ 156°53'24" W REACTOR RUN NUMBER: RR-7-11-g0A NEUTRON FLUXc 8.4~E.15 ELEVATION (M): KB=60 FT. MICROSCOPF~ OLYMPUS. # SPON TRACKS (FLUX) 5IX) # IND. TRACKS (R.UX) 4gIX) NUMBER OF GRAINS: 20 MAGNIRCA71ON: 1250 X ROCK TYPE:'~ TOROK FM. MINERAtc APATITE AREA USED GRAIN # (S(~ CM) I ?-0E-05 2 ?-0E-05 3 4.0E-05 4 ?-0E-05 5 4.0E-05 6 ?-0E-05 7 4.0E-05 8 ?-0E-05 9 4.0E-05 10 ?-0E-05 11 ?-0E-05 12 4.0E-05 13 ?-0E-05 14 15 ?-0E-05 16 ?-0E-05 17 ?-0E-05 18 ?-OE-OS 19 4.0E-05 20 4.0E-05 RHO(S) Ns (/CM=) I 5.000E+04 I 5.000E+04, 2 5,000E+04 I 5.000E+04 4 1.000E+05 I 5.000E+04 2 5.000E+04 2 1,000E+05 2 5.000E+04 I 5.000E+04 I 5.000E+04 0 0.000E+00 3 1.500E+05, I 5.000E+04 2 1.000E+05 I 5.000E+04 1 5.000E+04 2 1.000E+05 0 0.000E+00 0 0.000E+00 · . 5.4E-04 28 5.185E+04 RHO(I) Ni (/CM~) RATIO URANIUM AGE STD. DEV. (Ns/NO (PPM) , (MA) (MA) 6 6.000E+05 5 5.000E+05 13 6.500E+05 4 4.000E+05 24 1.200E+06 7 7.000E+05 15 7.500E+05 13 1.300E+06 10 5.000E+05 7 7.000E+05 7 7.000E+05 6 3.000E+05 23 2.300E+06 6 6.000E+05 12 .. 1,200E+06 4 4.000E+05 4 4.000E+05 11 1.100E+06 2 1.000E+05 I 5.000E+04 0.17 0.20 0.15 0.25 0.17 0.14 0.13 0.15 0.20 0.14 0.14 0.00 0.13 0.17 0.17 0.25 0.25 0.18 0.00 0.00 2.3 41.7 45.1 1.9 50.1- 54.9 2.5 38.5 29.3 1.5 6?-5 70.0 4.6 41.7 22.6 2.7 35.8 38.3 2.9 33.4 25.2 5.0 38.5 29.3 1.9 50,1 38.9 2.7 35.8 38.3 ?-7 ' 35.8 38.3 1.1 0.0 45.1 8.8 3?-7 20,1 ?-3 .... 41.7 45.1 4.6 41.7 31.9 1.5 62.5 70.0 1.5 62_5 70.0 4.2 45.5 35.1 0.4 0.0 152_5 0.2 0.0 348.8 180 6.667E+05 0.16 2.5 GMC Data Report No. 189 Page 15/51 PROJECT NAME: B ARROW ARCH DATE: '~ , 9/19/90 '" SAMPLE NUMBER~ SM 5992 LATITUDE: 70'36'54' N LAB NUMBER: SMU LONGITUDE: 156°53'24' W REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUXc 8.600E. 15 ELEVATION (M): KB=60 FT. MICROSCOPE OLYMPUS # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4000 NUMBER OF GRAINS: 20 MAGNIFICATION: 1250 X ROCKTYPE TOROK FM. MINERAI~ APATITE AREA USED GRAIN # (SQ. CM) 1 4.0E-05 2 4.0E-05 3 2.0E-05 4 4.0E-05 5 6.0E-05 6 4.0E-05 7 4.0E-05 8 2.0E-05 9 ~_0E-05 10 4.0E-05 11 8.0E-05 12 4.0E-05 13 4.0E-05 14 8.0E-05 15 8.0E-05 16 ZOE-05 17 4.0E-05 18 8.0E-05 19 4.0E-05 20 4.0E-05 RHO(S) Ns (/CM=) 4 .000E+05 2 5.000E+04 2 1.000E+05 2 5.000E+04 I 1.667E+04 2 5.000E+04 5 1.250E+05 1 5.000E+04 4 2.000E+05 9 ~_250E+05 2 2_500E+04 7 1.750E+05 4 1.000E+05 10 1.250E+05 I 1.250E+04 4 2.000E+05 2 5.000E+04 2 2"500E+04 3 7.500E+04 3 7.500E+04 Ni RHO(I) (/CM~) 9.0E-04 70 7.778E+04 17 8.500E+05 30 1.500E+06 14 1.400E+06 9 4.500E+05 18 6.000E+05 12 6.000E+05 42 ~- 100E+ 06 10 1.000E+06 38 3.800E+06 68 3.400E*06 32 8.000E+05 96 4.800E+06 22 1.100E*06 128 3.200E+06 10 2.500E+05 25 2.500E+06 19 9.500E+05 17 4.250E+05 15 7.500E+05 15 7.500E+05 637 1.416E+06 RATIO URANIUM (Ns/NO (PPM) AGE STD. DEV. (MA) (MA) 0.24 3.2 60.3 33.6 0.07 5.6 17.1 12.5 0.14 5.2 36.6 27.8 0.22 1.7 56.9 ' 44.6 0.06 2.2 14.3 14.7 0.17 2"2 4Z7 32"7 0.12 7.8 30.6 14.5 0.10 3.7 25.7 27.0 0.11 14.1 27.0 14.3 0.13 12"7 34.0 12__2 0.06 3.0 16.1 11.7 0.07 17.9 18.7 45.1 0.18 4.1 46.6 25.4 - 0.08 11.9 20.1 6.7 0.10 0.9 25.7 27.0 0.16 9.3 41.0 22"2 0.11 3.5 27.0 20.1 0.12 1.6 30.2 22.6 0.20 2.8 51.3 152"5 0.20 2.8 51.3 348.8 0.11 5.3 GMC Data Report No. 189 Page 16/51 PROJECT NAME: BARROW ARCH ;' DATE: ' ~" 9/19/90 SAMPLE NUMBER: SM 8820 LAB NUMBER: SMU REACTOR RUN NUMBER: RR-7-11-90A NEtYrRON FLUX: 9.000E+15 # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4000 NUMBER OF GRAINS: 20 LATITUDE: 70'36'54" N LONGITUDE: 156e53'24' W ELEVATION (fa): KB-60 FT. MICR~ OLYMPUS MAGNIRCATION: 1250 X ROCKTYP~ SHUBIK FM. MINERAI~ APATITE AREA USED GRAIN # (SQ. CM) I 4.0E-05 2 2.0E-05 3 2.0E-05 4 4.0E-05 5 2~0E-05 6 4.0E-05 7 2.0E-05 8 ~_0E-05 9 2.0E-05 10 ?_0E-05 11 2.0E-05 12 2.0E-05 13 8.0E-05 14 4.0E-05 15 4.0E-05 16 2.0E-05 17 2.0E-05 18 2.0E-05 19 4.0E-05 20 4.0E-05 RHO(S) RHO(I) RATIO URANIUM Ns (/CM=) Ni (/CM=) (Ns/NO (PPM) 0 0.000E+00 I 5.000E+04 0.00 0 0.000E+00 2 2.000E+05 0.00 I 5.000E+04 14 1.400E+06 0.07 0 0.000E+00 2 1.000E+05 0.00 0 0.000E+00 1 1.000E+05 0.00 0 0.000E+00 2 1.000E+05 0.00 3 1.500E+05 14 1.400E+06 0.21 0 0.000E+00 1 1.000E+05 0.00 0 0.000E+00 I 1.000E+05 0.00 0 0.000E+00 ' 1 1.000E+05 0.00 0 0.000E+00 2 2.000E+05 0.00 0 0.000E+00 I 1.000E+05 0.00 0 0.000E+00 I 2_500E+04 0.00 0 0.000E+00 I 5.000E+04 0.00 0 0.000E+00 I 5.000E+04 0.00 0 0.000E.00 2 ?_000E.05 0.00 0 0.000E+00 1 1.000E+05 0.00 2 1.000E+05 60 6.000E.06 0.03 0 0.000E.00 1 5.000E.04 0.00 0 0.000E+00 2 1.000E+05 0.00 6.0E-04 6 1.000E+04 111 3.700E+05 0.05 AGE STD. DEV. (MA) (MA) 0.2 0.0 373.2 0.7 0.0 163.3 5.0 - 19.2 19.9 0.4 - 0.0 ' 163.3 0.4 0.0 373.2 0.4 0.0 163.3 5.0 57.4 36.6 0.4 0.0 373.2 0.4 0.0 373.2 0.4 0.0 373.2 0.7 0.0 163.3 0.4 0.0 373.2 0.1 ._ 0.0 373.2 0.2 0.0 373.2 0.'2" '~ 0.0 373.2 0.7 0.0 163.3 0.4 0.0 373.2 21.3 9.0 6.5 0.2 0.0 373.2 0.4 0.0 163.3 1.3 GMC Data Report No. 189 Page 17/51 PROJECT NAME: BARROW ARCH DA'i'E: ~ - - 9119/90 . SAMPLE NUMBER: SBTWl 1200 LATITUDE: 71e19'12' N I. AB NUMBER: SMU LONGITUDE: 156'42'16' W REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUX: 9.500E.15 ELEVATION (M): KB=18 FT. MICROSCOP~ OLYMPUS # SPON TRAQ(S (FLUX) 500 # IND. TRACKS (FLUX) 4000 NUMBER OF GRAINS: 20 MAGNIRCATION: 1250 X ROCK TYPE: TOROK FM. SS. MINERAL: APATITE AREA USED GRAIN # (SO. CM) RHO(S) Ns (ICM~) I 2.0E-05 I 5.000E+04 2 2.0E-05 I 5.000E+04 3 8.0E-05 4 5.000E+04 4 2.0E-05 I 5.000E+04 5 2.0E-05 2 1.000E+05 6 2.0E-05 0 0.000E+00 7 4.0E-05 I 2.500E+04 8 4.0E-05 2 5.000E+04 9 4.0E-05 4 1.000E+05 10 2.0E-05 3 1.500E+05 11 2.0E-05 1 5.000E.04 12 2.0E-05 3 1.500E+05 13 1.2E-05 5 4.167E+05 14 2.0E-05 I 5.000E+04 15 1.2E-05 I 8.333E+04 16 2.0E-05 2 1.000E+05 17 2.0E-05 I 5.000E+04 18 1.2E-05 I 8.333E+04 19 2.0E-05 I 5.000E+04 20 4.0E-05 0 0.000E+00 RHO(0 RA330 Ni (/CM=) (Ns/NO 3 3.000E+05 3 3.000E+05 13 3.250E+05 3 3.000E+05 8 8.000E+05 I 1.000E+05 5 2.500E+05 15 7.500E+05 10 5.000E+05 · 15 1.500E+ 06 3 3.000E+05 20 2.000E+06 18 3.000E+06 3 3.000E+05 5 8.333E+05 5 5.000E+05 5 5.000E+05 6 1.000E+06 3 3.000E+05 3 1.500E+05 5.2E-04 35 6.783E+04 147 5.698E+05 URANIUM AGE (~) (MA) 0.33 1.0 94.0 108.7 0.33 1.0 94.0 108.7 0.31 1.1 86.9 49.8 0.33 1.0 94.0 · 108.7 0.25 2.7 70.7 56.0 0.00 0.3 0.0 389.5 0.20 0.8 56.6 62.1 0.13 2.5 ' 37.8 28.5 0.40 1.7 112.7 66.9 0.20 5.1 56.6 35.9 0.33 1.0 94.0 108.7 0.15 6.7 42.5 26.4 0.28 10.1 78.5 39.8 0.33 1.0 94.0 108.7 0.20 2.8 56.6 62.1 0.40 1.7 112.7 94.4 0.20 1.7 56.6 62.1 0.17 3.4 47.2 51.0 0.33 1.0 94.0 108.7 0.00 0.5 0.0 107.5 0.24 GMC Data Report No. 189 Page 18/51 PROJECT NAME: BARROW ARCH DATE: 9/19/90 M3~IPLE NUMBER: SBTWl 1906 LA'm'UDE: 71'19'12' N LAB NUMBER: SMU LONGITUDE: 156*42' 16' W REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUX: 9.700E+15 ELEVATION (Id): KB- 18 FT. MICROSCOPE: OLYMPUS # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4000 NUMBER OF GRAINS: 20 MAGNIRCATION: 1250 X ROCKTYPE: TOROK FM. SS. MINERAL: APATITE AREA USED GRAIN # (SQ. CM) 1 4.0E-05 2 4.0E-05 3 2.0E-05 4 8.0E-05 5 8.0E-05 6 4.0E-05 7 4.0E-05 8 4.0E-05 9 8.0E-05 10 4.0E-05 11 4.0E-05 12 .4.0E-05 13 8.0E-05 14 8.0E-05 15 4.0E-05 16 8.0E-05 17 4.0E-05 18 8.0E-05 19 4.0E-05 20 4.0E-05 RH(XS) Ns (/CM=) 2 5.000E+04 4 1.000E+05 5 2.500E+05 12 1.500E+05 2 2.500E+04 3 7.500E+04 22 5.500E+05 2 5.000E+04 5 6.250E+04 2 '5.000E+04 6 1.500E*05 4 1.000E.05 11 1.375E+05 4 5.000E+04 2 5.000E+04 10 1.250E.05 5 1.250E+05 4 5.000E+04 6 1.500E+05 14 3.500E+05 1.1E-03 125 1.179E+05 RHO(I) Ni (/CM=) 6 3.000E+05 13 6.500E.05 27 2.700E*06 73 '1.825E*06 8 2.000E+05 16 8.000E+05 120 6.000E+06 16 8.000E+05 33 8.250E+05 9 4.500E+05 38 1.900E+06 16 8.000E*05 90 2.250E+06 12 3.000E+05 12 6.000E+05 80 2.000E+06 32 1.600E+06 19 4.750E+05 43 2.150E+06 81 4.050E+06 RATIO URANIUM (Ns/Nd (PPM) 0.33 0.31 0.19. 0.16 0.25 0.19 0.18 0.13 0.15 0.22 0.16 0.25 0.12 0.33 0~17 0.13 0.16 .0.21 0.14 0.17 AGE STD. DEV. (MA) (MA) 1.0 96.0 78.5 2.1 88.7 50.9 8.9 .... 53.5 26.2 6.0 47.5 15.0 0.7 72.1 57.1 2.6 54.2 34.2 19.8 53.0 17_5 ?_6 36.2 27.2 2.7 43.8 21.1 1.5 64.2 50.3 6.3 45.7 20.2 2.6 77_1 40.5 7.4 35.4 11.4 1.0 '96.0 55.6 2.0 48.2 36.9 6.6 36.2 12_3 5.3 45.2 21.8 1.6 60.8 33.6 7.1 40.4 17.7 13.4 50.0 14.7 744 1.404E+06 0.17 4.6 GMC Data Report No. 189 Page 19/51 PROJECT NAME: BARROW ARCH DATE: 9~27~90 SAMPLE NUMBER: SBTW3 200 LATITUDE: 71 ° 09' 46" N LAB NUMBER: SMU LONGITUDE: 56° 34' 44' W REACTOR RUN NUMBER: RR-7-11-90A ELEVATION (M): KB=44 FT. NEUTRON FLU,~ 1.240E+16 MICROSCOPE: OLYMPUS SPON TRACKS (FLUX) 500 IND. TRACKS (FLUX) 4000 MAGNIRCATION: 1250 X ROCK TYPE: Torok FM. Sandstone NUMBER OF GRAINS: 20 MINERAl- APATITE GRAIN # AREA USED (SQ. CM) Ns 1 4.0E-05 1 2 2.0E-05 2 3 2.0E-05 1 4 8.0E-05 5 5 4.0E-05 2 6 ?-0E-05 1 7 2.0E-05 2 8 4.0E-05 1 9 2_0E-05 6 10 4.0E-05 3 11 4.0E-05 10 12 6.0E-05 4 13 4.0E-05 2 14 2.0E-05 3 15 2.0E-05 9 16 2.0E-05 3 17 8.0E-05 10 18 2.0E-05 2 19 8.0E-05 4 20 ?-0E-05 6 RHO(S) (/cM~) 2-500E+04 1.000E+05 5.000E+04 6.250E+04 5.000E+04 5.000E+04 1.000E+05 2.500E+04 3.000E+05 7.500E+04 2.500E+05 6.667E+04 5.000E+04 1.500E+05 4.500E+05 1.500E,05 1.250E,05 1.000E+05 5.000E+04 3.000E+05 7.4E-04 3 1.500E+05 5 5.000E+05 4 4.000E+05 13 3.250E+05 5 2.500E+05 3 3.000E+05 6 6.000E+05 3 1.500E+05 22 2.200E+06 10 5.000E+05 31 1.550E+06 8 2.667E+05 5 2.500E+05 17 1.700E+06 40 4.000E+06 8 8.000E+05 43 1.075E+06 6 6.000E+05 15 3.750E+05 24 ?-400E+06 271 7.324E+05 RATIO URANIUM (Ns/NO (PPM) AGE STD.DEV. (MA) (MA) 0.33 0.4 122__5 141.5 0.40 1.3 146.7 122.9 0.25 1.0 92__1 103.0 0.38 0.8 141.1 ' 74.6 0.40 0.6 146.7 122_9 0.33 0.8 122.5 141.5 0.33 1.5 122.5 100.2 0.33 0.4 122.5 141.5 0.27 5.7 100.4 241.9 0.30 1.3 110.3 72.8 0.32 4.0 118.6 43.5 0.50 0.7 182.9 11 2.3 0.40 0.6 146.7 122.9 0.18 4.4 65.1 40.9 0.23 10.3 82_9 30.8 0.38 ?__1 137.6 93.4 0.23 ?-8 85.7 30.4 0.33 1.5 122.5 100.2 0.27 .1.0 98.2 55.4 0.25 6.2 97-1 42.3 0.28 1.9 GMC Data Report No. 189 Page 20/51 ,, o PROJECT NAME: BARROW ARCH DATE: 9/27190 SAMPLE NUMBEP~ SBTW3 2430 LATITUDI=' 71' 09' 46" N LAB NUMBF_P~ SMU LONGmJDE: 56* 34~ 44' W REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUX: 1.250E+16 # SPON TRA~ (FLUX) 500 MICROSCOPE: OLYMPUS MAGNIRCATION: 1250 X # IND. TRACKS (FLUX) NUMBER OF GRAINS: 4000 12 ROCKTYP~ MINERAl* KINGAK SHALE APATITE AREA USED GRAIN # (SQ. Cid) I 2.0E-05 2 2.0E-05 - 3 4.0E-05 4 4.0E-05 5 4.0E-05 6 3.2E-05 7 4.0E-05 8 2.0E-05 9 2-0E-05 10 4.0E-05 11 2-0E-05 12 2.0E-05 13 0.0E+00 14 0.0E+00 15 0.0E+00 16 0.0E+00 17 0.0E+00 18 0.0E+00 19 0.0E+00 20 0.0E+00 3.5E-04 RHO(S) Ns (/CM=) 3 1.500E+05 ' 8 4.000E+05 4 1.000E+05 6 1.500E+05 00. O00E*O0 15 4.688E+05 7 1.750E+05 0 0.000E+00 2 1.000E+05 8 2-000E+05 I 5.000E+04 6 3.000E+05 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR RHOO) Ni (ICM~ 12 1.200E+06 21 2.100E+06 . 11 5.500E+05 24 1.200E+06 I · 5.000E~'04 58 3.625E+06 18 9.000E+05 I 1.000E+05 7 7.000E+05 35 1.750E+06 4 4.000E+05 14 1.400E+06 0 ERR. 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 60 1.705E+05 206 1.170E+06 RA]]O 0.25 0.38 0.36· 0.25 0.00 0.26 0.39 0.00 0.29 0.23 0.25 0.43 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.29 URANIUM (PPM) 3.1 5.4 1.4 3.1 0.1 9.3 2.3 0.3 1.8 4.5 1.0 3.6 ERR ERR ERR ERR ERR ERR ERR ERR AGE STD. DEV. (MA) (MA) 92.8 60.1 140,9 58.9 134.6 78.8 92-8" 42.6 0.0 514.4 96.0 28.2 143.8 64.4 0.0 514.4 106.0 241.9 · 84.9 33.5 92.8 103.9 158.3 77.6 0.0 ERR 0.0" ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 3.0 GMC Data Report No. 189 Page 21/51 PROJECT NAME: BARROW ARCH DATE: ~ 9~27~90 SAMPLE NUMBER: TOP 10392 LATITUDE: 70° 37' 30' N LAB NUMBER: SMU LONGITUDE: 55° 53' 36' W REACTOR RUN NUMBER: RR-7-11-90A NEI/I'RON FLUX: 1.400E+ 16 ELEVATION (M): KB - 42 ft. MICROSCOPE: OLYMPUS # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4000 NUMBER OF GRAINS: 20 MAGNIRCATION: 1250 X ROCKTYPE: MINERAl- Basement (Devonian) APATITE AREA USED GRAIN # (SQ. CM) 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 RHO(S) Ns (IC~) Ni 8.0E-05 4.0E-05 4.0E-05 2.0E-05 8.0E-05 2.0E-05 4.0E-05 4.0E-05 4.0E-05 2.0E-05 4.0E-05 8.0E-05 4.0E-05 2.0E-05 4.0E-05 4.0E-05 4.0E-05 2.0E-05 4.0E-05 8.0E-05 0 0.000E+00 0 0.000E+00 0 0.000E+O0 0 0.000E+00 0 0.000E+00 1 5.000E+04 0 0.000E+00 0 0.000E+00 I 2.500E+04 0 0.000E+00 1 2.500E+04 0 0.000E+00 0 0.000E+O0 0 0.000E+00 0 0.000E+O0 0 0.000E+00 0 0.000E+00 1 5.000E+04 0 0.000E+00 0 0.000E+00 10 4 77 2 9 71 24 8 60 6 89 6 6. 32 45 37 48 18 18 8.6E-04 4 4.651E+03 605 RHO(I) 2.500E*05 2.000E*05 3.850E+06 2.000E+05 2.250E+05 7.100E+06 1.200E*06 4.000E*05 3.000E*06 6.000E*05 4.450E+06 1.500E+05 3.000E*05 .3.500E*06 1.600E+06 2.250E*06 1.850E*06 4.800E+06 9,000E*05 4.500E*05 RATIO (Ns/N~ 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.02 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 1.407E+06 0.01 URANIUM (PPM) AGE S'rD. DEV. (MA) ~A) 0.6 0.0 ' 43.8 0.5 0.0 116.2 8.8 0.0 5.5 0.5 0.0 '. 252.6 0.5 0.0 48.9 16:2 5.9 5.9 2.7 0.0 17.8 0.9 0.0 55.4 6.9 7.0 7.0 1.4 0.0 75.1 10.2 4.7 4.7 0.3 0.0 75.1 0.7 0.0 75.2 8.0 -' 0.0 12.1 3.7 0.0 13.3 5.1 0.0 9.5 4.2 0.0 11.5 11.0 8.7 8.8 2.1 0.0 23.9 1.0 0.0 23.9 3.2 GMC Data Report No. i89 Page 22/51 PROJECT NAME: SAMPLE NUMBER: BARROW ARCH DATE: 9~27~90 TOP 2087 LATITUDE: 70* 37' 30' N LAB NUMBER: SMU LONGITUDE: 55* 53' 36" W ELEVATION (M): KB - 42 ft. MICROSCOPE: OLYMPUS REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUX: 1.340E+ 16 # SPON TRA~ (FLUX) SOO MAGNIFICATION: 1250 X ROCKTYPF_.: Torok FM. Sandstone NUMBER OF GRAINS: 13 MINERAL: APATITE AREA USED GRAIN # (SQ. CM) 1 2.0E-05 2 2.0E-05 3 2.0E-05 4 8.0E-05 5 8.0E-05 6 2.0E-05 7 4.0E-05 8 2.0E-05 9 2.0E-05 10 2.0E-05 11 2.0E-05 12 2.0E-05 13 1.2E-05 14 0.0E+00 15 0.0E+00 16 0. 0E+00 17 0.0E,00 18 0.0E+00 19 0.0E+00 20 0.0E+00 3.9E-04 RHO(S) Ns (/Ca=) 5 2-500E+05 ' 1 5.000E+04 21 1.050E+06 3 3.750E+04 I 1.250E+04 3 1.500E+05 · 2 5.000E+04 1 5.000E+04 0 0.000E+00 2 '1.000E+05 1 5.000E+04 2 1.000E+05 I 8.333E+04 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 43 1.097E+05 RHO(I) Ni (/Ca=) 27 2.700E+06 3 3.000E+05 114 1.140E+07 9 2.250E+05 3 7.500E+04 7 7.000E+05 6 3.000E+05 '3 3.000E+05 2 2.000E+05 8 8.000E+05 4 4.000E+05 9 9.000E*05 3 5.000E+05 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 198 1.010E+06 RATIO (Ns/NO 0.19 0.33 0.18 0.33 0.33 0.43 0.33 0.33 0.00 0.25 0.25 0.22 0.33 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.22 URANIUM (PPU) 6.4 0~7 27.2 0.5 0.2 1.7 0.7 0.7 0.5 1.9 1.0 2.1 1.2 ERR ERR ERR ERR ERR ERR ERR AGE 73.8 132.3 73.4 132.3 132.3 169.6 - 132.3 132.3 0.0 99.4 99.4 88.5 132.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.4 36.1 152.8 17.8 88.4 152.8 117.3 108.2 152.8 241.9 78.8 111.3 69.3 152.8 ERR ERR ERR ERR ERR ERR ERR GMC Data Report No. 189 Page 23/51 PROJECT NAME: BARROW ARCH DATE: 9/27/90 SAMPLE NUMBER: TOP 3240 LATITUDE: 70° 37' 30" N LAB NUMBER: SMU REACTOR RUN NUMBER: RR-7-11-90A LONGITUDE: 55° 53' 36' W ELEVATION (M): KB = 42 ft. NEUTRON FLUX: # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4000 1.360E+16 MICROSCOPEc OLYMPUS MAGNIRCATION: 1250 X ROCKTYPE: Torok FM. Sandstone NUMBER OF GRAINS: 20 MINERAl- APATITE AREA USED GRAIN # (SQ. CM) RHO(S) Ns (/CM=) I 2-0E-05 5 ?_500E+05 2 2.0E-05 I 5.000E+04 3 2.0E-05 I 5.000E+04 4 2.0E-05 0 0.000E+00 5 2.0E-05 0 0.000E+00 6 2.0E-05 I 5.000E+04 7 2.0E-05 0 0.000E+00 8 2.0E-05 5 ?-500E+05 9 2.0E-05 2 1.000E+05 10 2.0E-05 0 0.000E+00 11 4.0E-05 2 5.000E+04 12 2.0E-05 5 ~-500E+05 13 2-0E-05 3 1.500E+05 14 2.0E-05 I 5.000E+04 15 2-0E-05 2 1.000E+05 16 2-0E-05 1 5.000E+04 17 2.0E-05 I 5.000E+04 18 8.0E-05 0 0.000E+00 19 ?-0E-05 I 5.000E+04 20 4.0E-05 2 5.000E+04 RHO(I) Ni (ICM~) 25 2.500E+06 4 4.000E+05 5 5.000E+05 3 3.000E+05 1 1.000E+05 3 3.000E+05 3 3.000E+05 22 2.200E+06 14 1.400E+06 1 1.000E+05 7 3.500E+05 27 ~_700E+06 9 9.000E+05 5 5.000E+05 11 1.100E+06 3 3.000E+05 6 6.000E+05 2 5.000E+04 5 5.000E+05 18 9.000E+05 (Ns/NO 0.20 0.25 0.20 0.00 0.00 0.33 0.00 0.23 0.14 0.00 0.29 0.19 0.33 0.20 0.18 0.33 0.17 0.00 0.20 0.11 URANIUM (PPM) 5.9 0.9 1.2 0.7 0.2 0.7 0.7 5.2 3.3 0.2 0.8 6.4 2.1 1.2 2.6 0.7 1.4 0.1 ~.2 2.1 AGE 80.9 100.9 80.9 0.0 0.0 134.2 0.0 91.8 57.9 0.0 115.2 74.9 134.2 80.9 73.6 134.2 67.5 0.0 80.9 45.0 39.8 112.9 88.7 155.1 558.3 155.1 155.1 45.7 43.8 558.3 92_5 36.6 89.7 88.7 56.6 155.1 72_9 245.5 88.7 33.6 5.0E-04 33 6.600E+04 174 6.960E+05 0.19 1.6 GMC Data Report No. 189 Page 24/51 PROJECT NAME: SAMPLE NUMBER: BARROW ARCH DATE: " 9~27~90 TOP 6490 LAB NUMBER: SMU LATITUDE: · 70e 37' 30" N LONGITUDE: ' 55' 53' 36'W REACTOR RUN NUMBER: RR-7-11-90A NEUI~ON FLUX: 1.380E+16 # SPON TRACKS (FLUX) 500 # IND, TRACKS (FLUX) 4000 NUMBER OF GRAINS: 20 ELEVATION (M): KB - 4:~ ft, MICROSCOPE: OLYMPUS MAGNIFICATION: 1250 X ROCKTYPE: Torok FM, Sandstone MINERAL: APATITE AREA USED GRAIN # (SCk CM) 1 8,0E-05 2 4,0E-05 3 8.0E-05 4 4.0E-05 5 8.0E-05 6 4.0E-05 7 8,0E-05 8 . 8,0E-05 9 8,0E-05 10 8,0E-05 11 8,0E-05 12 4,0E-05 13 8,0E-05 14 4,0E-05 15 8,0E-05 16 4,0E-05 17 4,0E-05 18 8,0E-05 19 4,0E-05 20 4,0E-05 RHO(S) Ns (/CM~) . I 1,250E+04 1 2,500E+04 2 2,500E+04 0 0,000E+00 0 0,000E+00 6 1,500E+. 05 5 6,250E+04 00.O00E+O0 0 O. O00E+O0 0 O. O00E+O0 I 1,250E+04 2 5,000E+04 I 1,250E+04 0 0,000E+00 6 7,500E+04 2 5,000E+04 4 1,000E+05 6 7,500E+04 2 5,000E+04 2 5,000E+04 1,2E-03 41 3,306E+04 RHO(I) Ni (/CM~ 21 5,250E+05 9 4,500E+05 23 5,750E+05 7 3,500E+05 5 1,250E+05 117 5.850E+06 72 1.800E+06 11 2,750E+05 6 1.500E+05 3 7,500E+04 ' 7 1.750E+05 22 1,100E+06 9 2.250E+05 5 2:500E+05 100 2,500E+06 14 7,000E+05 52 2,600E+06 97 2,425E+06 17 8,500E+05 23 1,150E+06 '620 1,000E+06' RATIO 0,05 0,11 0.09 0,00 0.00 0.05 0,07 0,00 0,00 0,00 0.14 0,09 0,11 0,00 0.06 0.14 0.08 0,06 0,12 0,09 0:07. URANIUM 1.2 1.0 1.3 0.8 0.3 13,6 4,2 0,6 0,3 0,2 0,4 2.6 0,5 0,6 5,8 1,6 6,0 5,6 2.0 2,7 AGE STD. DEV. (MA) (MA) ,. 19.6 20.1 45.7 48.2 35.8 26.4 0.0 ' 62.8 0.0 90.0 21.1 8.9 28,6 13.3 0.0 39.1 0,0 74.0 0.0 157.4 58,7 62.8 37,4 27,7 45,7 48.2 0.0 90.0 24,7 10.5 58.7 44.5 31.7 16.5 25,5 10.8 48,4 36.2 35,8. 26.4 2.'3 GMC Data Report No. 189 Page 25/51 PROJEC~ NAME: BARROW ARCH DATE: 9127/90 SAMPLE NUMBER: TOP 9436 LATITUDE: 70* 37' 30" N LAB NUMBER: SMU LONGITUDE: 55* 53' 36' W REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUX: 1.390E. 16 k-1 k"VATION (M): KB - 42 ft. MICROSCOPE: OLYMPUS # SPON TRACKS (FLUX) 5OO # ~NO. TRACKS (FLUX) 4OOO NUMBER OF GRAINS: 13 MAGNIFICATION: 1250 X ROCKTYPE: Sadlerochit Fm. Sandstone MINERAL: APATITE AREA USED GRAIN # (SQ. CM) I '2.0E-05 2 2.0E-05 3 2.0E-05 4 2.0E-05 5 4.0E-05 6 4.0E-05 7 4.0E-05 8 4.0E-05 9 4.0E-05 10 4.0E-05 11 4.0E-05 12 4.0E-05 13 4.0E-05 14 0.0E+00 15 0.0E,00 16 0.0E+00 17 0.0E+00 18 0.0E+00 19 0.0E+00 20 0.0E+00 RHO(S) Ns (/CM~) 0 0.O00E+00 0 0.000E+O0 0 0.000E*00 I 5.000E+04 0 0.000E+00 0 0.000E*00 0 0.000E+00 0 0.000E+O0 0 0.000E+00 I 2.500E+04 0 0.000E+00 I 2.500E+04 0 0.000E+00 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR Ni RHO(I) RATIO URANIUM (lc:M,) (Ns~O (PPU) 17 1'.700E+06 0.00 8 8.000E+05 0.00 5 5.000E+05 0.00 19 1.900E+06 0.05 9 4.500E+05 0.00 11 5.500E+05 0.00 7 3.500E+05 0.00 10 5.000E+05 0.00 4 2.000E+05 0.00 8 4.000E+05 0.13 10 5.000E+05 0.00 20 1.000E+06 0.05 39 1.950E+06 0.00 0 ERR 0.00 0 ERR 0.00 0 ERR 0.00 0 ERR 0.00 0 ERR 0.00 0 ERR 0.00 0 ERR 0.00 AGE STD. DEV. (MA) (MA) 3.9 0.0 25.1 1.8 0.0 55.0 1.2 0.0 90.6 4.4 21.8 22.4 1.0 0.0 48.6 1.3 0.0 39.4 0.8 0.0 63.3 1.2 0.0 43.5 0.5 0.0 115.4 0.9 51.8 55.0 1.2 0.0 43.5 2.3 20.8 21.3 4.5 0.0 10.8 ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR 4.4E-04 3 6.818E,03 167 7.591E+05 0.02 1'.7 GMC Data Report No. 189 Page 26/51 PROJECT NAME: SAMPLE NUMBERc LAB NUMBER: BARROW ARCH DATE: ' 9119/90 WTF 7539 SMU REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUXc 7.400E+ 15 # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4000 NUMBER OF GRAINS: 11 LATITUDE: 70e49'56' N ,LONGITUDE~ 152° 18' 11 ' W ELEVATION (M): KB - 39 Fl'. MICROSCOP~ OLYMPUS, MAGNIFICATION: 1250 X ROCKTYPF_~ SANDSTONE MINERAl- APATITE AREA USED GRAIN # (SQ. ~ I 4.0E-05 2 2.0E-05 3 2.0E-05 4 2.0E-05 5 4.0E-05 6 2_0E-05 7 2,0E-05 8 2.0E-05 9 2,0E-05 10 2_0E-05 11 2,0E-05 12 0.0E+00 13 0.0E+00 14 0.0E+00 15 0.0E+00 16 0.0E+00 17 0.0E+00 18 0.0E+00 19 0.0E+00 20 0,0E,00 RHO(S) Ns (ICM=) 2 "5.000E+04 I 5.000E,04 I 5.000E,04 I 5.000E+04 0 0.000E+00 I 5.000E+04 2 1.000E+05 I 5.000E+04 1 5.000E+04 1 '5.000E+04 2 1.000E+05 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 2.6E-04 13 5.000E+04 RHO~ Ni (ICM=) 9 4.500E+05 4 4.000E+05 5 5.000E+05 9 9.000E+05 9 4.500E+05 7 7.000E+05 9 9.000E+05 5 5.000E+05 6 6.000E+05 4 4.000E+05 8 8.000E+05 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR RATIO 0.22 0.25 0.20 0.11 0,00 0.14 0.22 0.20 0.17 0.25 0.25 0.00 0.00 0.00 0.00 0.00 0.00 0,00 0.00 0.00 5.769E+05 0.17 URANIUM (PP~ 1.9 1.7 2.2 3.9 1.9 3.0 3.9 2,2 Z6 1.7 3.5 ERR ERR ERR ERR ERR ERR ERR ERR ERR AGE STD. DEV. (MA) (MA) 2.5 49.0' 38.4 55.1 61.7 44.1 48.4 24.6 25.9 0.0 25.9 31.5 33.8 49.0 38.4 44.1 48.4 36.8 39.8 55.1 61.7 55.1 43.6 0.0 ERR 0.0 ERR 0,0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR GMC Data Repo~ No. 189 Page 27/51 PROJECT NAME: ;AMPLE NUMBER: WTF 8260 LATITUDE: 70°49'56" N LAB NUMBER: SMU LONGITUDE: 152° 18' 11 ' W REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUX: 7.600E+15 ELEVATION (M): KB=39 FT. MICROSCOPE: OLYMPUS # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4000 NUMBER OF GRAINS: 20 MAGNIFICATION: 1250 X ROCKTYPE: USBURNE GR. SS. MINERAL: APATITE AREA USED GRAIN # (SQ. CM) 1 2.0E-05 2 2.0E-05 3 2.0E-05 4 4.0E-05 5 2.0E-05 6 2"0E-05 7 2.0E-05 8 2.0E-05 9 2.0E-05 10 2.0E-05 11 4.0E-05 12 2.0E-05 13 2"0E-05 14 4.0E-05 15 2.0E-05 16 2"0E-05 17 2.0E-05 18 ?_0E-05 19 2.0E-05 20 2"0E-05 4.6E-04 RHO(S) Ns (/CNI~) 2 1.000E+05 5 2"500E+05 I 5.000E+04 3 7.500E+04 2 1.000E+05 I 5.000E+04 3 1.500E+05 1 5.000E+04 1 5.000E+04 2 1.000E+05 I 2"500E+04 ~ 3 1.500E+05 5 2"500E+05 I 2"500E+04 I 5.000E+04 4 Z000E+05 3 1.500E+05 4 ZOOOE+05 3 1.500E+05 2 1.000E+05 48 1.043E+05 RHO(1) RATIO Ni (/CM~ (Ns/NO 13 1.300E+06 0.15 13 1.300E+06 0.38 4 4.000E+05 0.25 27 1.350E+06 0.11 6 6.000E+05 0.33 7 7.000E+05 0.14 12 1.200E+06 0.25 5 5.000E+05 0.20 6 6.000E+05 0.17 7 7.000E+05 0.29 5 2"500E+05 0.20 13 1.300E+06 0.23 35 3.500E+06 0.14 4 2.000E+05 0.25 6 6.000E+05 0.17 32 3.200E+06 0.13 8 8.000E+05 0.38 10 1.000E+06 0.40 15 1.500E+06 0.20 6 6.000E+05 0.33 234 1.017E+06 0.21 URANIUM AGE STD. DEV. O='PM) ~A) ~A) 5.5 34.9 26.5 5.5 86.9 45.9 1.7 56.6 63.3 5.7 25.2 ' 15.4 2.5 75.3 25.9 2.9 32.4 34.7 5.1 56.6 36.6 2.1 45.3 49.7 2.5 37.8 40.8 2.9 64.6 51.9 1.1 45.3 49.7 5.5 52.3 33.6 14.7 3?_4 15.6 0.8 56.6 63.3 2.5 37.8 40.8 13.5 28.4 15.1 3.4 64.7 57.5 4.2 90.3 53.6 6.3 45.3 28.7 2.5 75.3 61.6 4.3 GMC Data Report No. 189 Page 28/51 PROJECT NAME: BARROW ARCH DATE: 9119190 SAMPLE NUMBER: WTF 8864 LATITUDE: 70*49'56' N I_AB NUMBER: SMU . LONGITUDE: 152'18'11' W REACTOR RUN NUMBER: RR-7-11-90A ELEVATION (M): K13 - 39 FT. NEUTRON FLUX: 7.800E+15 · MICROSCOPE: OLYMPUS # ,~°ON TRACKS (FLUX) 500 MAGNIRCATION: 1250 X # IN[:). TRACKS (FLUX) 4000 ROCK TYPE: PRE-MISS. BASEMENT NUMBER OF GRAINS: MINERAL: APATITE AREA USED GRAIN # (SQ. CM) 1 8.0E-05 2 8.0E-05 '3 8.0E-05 4 8.0E-05 5 0.0E+00 6 0.0E+00 7 0.0E+00 8 0.0E+00 9 0.0E+00 10 0.0E+00 11 0.OE+00 12 0.0E+00 13 0.0E+00 14 0.0E+00 15 0.0E+00 16 0.0E+00 17 0.0E+00 18 0.0E+00 19 0.0E+00 20 . .0.0E+00 3.2E-04 RHO(S) Ns (/CM=) 4 5.000E+04 4 5.000E+04 3 3.750E+04 I 1.250E+04 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR ' Ni 63 33 21 205 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 3.750E+04 322 RHO(I) (/C~=) 1.575E+06 8.250E+05 5.250E+05 5.125E+06 ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ?_012E+06 RATIO 0.06 0.12 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 .0.00 0.00 0;00 0.00 0.00 0.00 0.00 0.00 URANIUM (PPM) 6.5 3.4 2.2 21~0 ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR AGE 14.8 28.2 33.2 1.1 0.0 0.0 0.0 ~0 ~0 0.0 0.0 0.0 ~0 0.0 0.0 ~0 0.0 0.0 0.0 ~0 8.3 7.7 15.0 20.6 1.1 ERR ERR ERR ERR ERR ERR ERR ERR ERR GMC Data Report No. 189 Page 29/51 PROJECT NAME: BARROW ARcH DATE: 9/27/90 SAMPLE NUMBER: ETESH 10669 LATFrUDE: 70° 34' 12' N LAB NUMBER: SMU LONGITUDE: 52* 36' 07° W REACTOR RUN NUMBER: RR-7-11-90A NEUTRON FLUX: 1.200E+ 16 ELEVATION (M): EEl - 28 FT. MICROSCOPE: OLYMPUS # SPON TRACKS (FLUX) 500 # IND. TRACKS (FLUX) 4O0O NUMBER OF GRAINS: 20 MAGNIFICATION: 1250 X ROCKTYPE: · Basement Granite MINERAL: APATITE AREA USED GRAIN # (SQ. CM) NS 1 4.0E-05 0 2 4.0E-05 0 3 4.0E-05 0 4 2.0E-05 1 5 2.0E-05 0 6 2.0E-05 0 7 4.0E-05 0 8 4.0E-05 0 9 4.0E-05 0 10 4.0E-05 2 11 8.0E-05 0 12 4.0E-05 0 13' 4.0E-05 0 14 4.0E-05 0 ... 15 4.0E-05 0 16 4.0E-05 0 17 4.0E-05 0 18 8.0E-05 0 19 8.0E-05 0 20 4.0E-05 0 RHO(S) (/Ca=) RHO0) Ni (/Ca=) 0.000E+00 11 0.000E+00 5 0.000E+00 · .' 18 5.000E+04 36 0.000E+00 7 0.000E+00 5 0.000E+00 4 0.000E+00 11 0.000E+00 102 5.000E+04 134 0.000E+00 34 0.000E,00 23 0.000E+00 17 0.000E+00 14 0.000E+00 15 0.000E+00 19 0.000E+00 8 0.000E+00 45 0.000E+00 21 0.000E+00 13 8.6E-04 3 3.488E+03 542 5.500E,05 2.500E,05 9.000E,05 3.600E,06 7.000E+05 5.000E+05 2.000E+05 5.500E+05 5.100E+06 6.700E*06 8.500E+05 1.150E+06 8.500E+05 7.000E+05 7.500E+05 9.500E+05 4.000E+05 1.125E+06 5.250E+05 6.500E+05 RATIO 0.00 0.00 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.260E+06 0.01 URANIUM 1.5 0.7 2.4 9.6 1.9 1.3 0.5 1.5 13.6 17.9 2.3 3.1 2.3 1.9 2.O 2.5 1.1 3.0 -1.4 1.7 AGE STD. DEV. (k~) (MA) 0.0 34.0 0.0 78.3 0.0 20.5 10.0 10.1 0.0 54.7 0.0 78.3 0.0 99.7 0.0 34.0. 0.0 3.5 5.4 3.8 0.0 10.7 0.0 15.9 0.0 21.7 0.0 26.5~. 0.0 24.7 0.0 19.4 0.0 47.5 0.0 8.1 0.0 17.5 0.0 28.5 3.4 GMC Data Report No. 189 Page 30/51 PROJECT NAME BARROWARCH DATF~ 1/10/91 LRMPLE NUMBER: SM4956 LATITUDE: e' N LAB NUMBER: SMU LONGITUDE: o.W REACTOR RUN NUMBER: RR-7-11-90Z NEUTRON FLUX: 7.000E+ 15 ELEVATION 0VI): MICROSCOPE: oLYMPuS # ,%r~ON TRAClC~ (FLUX) 1000 if IND. TRACKS (FLUX) 6000 NUMBER OF GRAINS: 20 MAGNIRCATION: 1250 X ROCKTYPE: TOROK FM: MINERAl-_ ZIRCON AREA USED GRAIN # (S(Z CM) RHO(S) Ns (/CM~) I 2,0E-05 104 5.200E+06 ,.2 3.2E-06 18 5.625E+06 '3 7.2E-06 42 5.833E+06 4 4.8E-06 24 5.000E+06 5 2.0E-05 74 3.700E+06 6 3.2E-06 8 2_500E+06 7 7.2E-06 50 6.944E+06 8 1.2E-05 54 4.500E+06 9 4.8E-06 20 4.167E+06 10 4.8E-06 13 ' ?-708E+06 11 9.6E-06 71 7.396E+06 12 8.0E-06 45 5.625E+06 13 8.0E-06 68 8.500E+06 14 1.2E-05 71 5.917E+06 15 3.2E-06 15 4.688E+06 16 6.4E-06 55 8.594E+06 17 1.2E-05 43 3.583E+06 18 6.4E-06 39 6.094E+06 19 9.6E-06 68 7.083E+06 20 4.8E-06 40 8.333E+06 1.7E-04 922 5.514E+06 Ni 62 7 13 25 63 12 36 108 29 13 36 36 64 128 16 25 62 46 35 2O 836 FTAGE: UPPER CI: LOWER CI: STD ERR: CHI~. AVG. AGE: STD. ERR: 226.9 Ma 254.6 Ma 202.2 Ma 12.65 Ma ' 0.601 111.887 279.9 Ma 34.8 RHO(I) RATIO URANIUM AGE (/CI~I~) (Ns/NO (PPM) (UA) 6.200E+06 1.68 28.3 342,0 4.375E+06 2.57 20.0 5.1.7.2 3.611E+06 3.23 16.5 6~3.4 1.042E+07 0.96 47.6 198.0' 6.300E+06 1.17 28.8 241.4 7.500E+06 0.67 34.3 138.1 1 :O00E+07 1.39 45.7 284.5 1.800E+07 0.50 82.3 103.9 1.208E+07 0.69 55.2 142.8 5.417E+06 1:00 24.8 206.1 7.500E+06 1.97 34.3 400.3 9.000E+06 1.25 41.1 256.6 1.600E+07 1.06 73.1 218.7 2.133E+07 0.55 97.5 115.1 1.000E+07 0.94 45.7 193.4 7.813E+06 ~_20 35.7 445.0 1.033E+07 0.69 47.2 143.6 1.438E+07 0.85 65.7 175.1 7.292E+06 1.94 33.3 394.5 8.333E+06 2.00 38.1 405.8 1.000E+07 1.10 45.7 19 56.1 231.0 205.4 57.0 4?-2 63.2 62.9 17.7 41.8 81.1 83.0 58.0 38.8 17.5 69.8 108.4 28.9 38.6 83.2 117_0 GMC Data Report No. i89 Page 31/51 PROJECT NAME: BARROW ARCH DA~_: 1/10/91 SAMPLE NUMBER: SM5992 LATITUDE: "N LAB NUMBER: SMU LONGITUDE: . "W REACTOR RUN NUMBER: RR-7-11-90Z NEUTRON FLUX: 7.000E+ 15 I~ SPON TRACKS (FLUX) 1000 # INDo TRACKS (FLUX) 6000 NUMBER OF GRAINS: 20 ELEVA~ (M): MICR~E: OLYMPUS MAGNIRCATION: 1250 X ROCK ~fPg- TOROK FM. MINERAL: ZIRCON FT AGE: 190.0 Ma UPPER CI: 20~9 Ma LOWER CI: 17~_8 Ma STD ERR: 8.75 Ma C. COEFF: 0.647 CHI~ 116.851 AVG. AGE: 197.2 Ma STD. ERR: 18.3 AREA USED GRAIN # (S(~ ~ I 9.6E-06 2 1.6E-05 3 1.2E-05 4 ?-0E-05 5 1.2E-05 6 8.0E-06 7 1.2E-05 8 1.6E-05 9 ?-0E-05 10 1.6E-05 11 1.6E-05 12 9.6E-06 13 1.3E-05 14 1.2E-05 15 2.0E-05 16 9.6E-06 17 ?-0E-05 18 7.2E-06 19 9.6E-06 20 1.2E-05 RHO(S) Ns (/CMa) 73 7.604E+06 141 8.813E+06 39 3.250E+06 36 1.800E+06 135 1.125E+07 111 1.388E+07 115 9.583E+06 50 3.125E+06 79 3.950E+06 73 4.563E+06 100 6.250E+06 52 5.417E+06 160 1.250E+07 50 4.167E+06 40 ?-000E+06 66 6.875E+06 150 7.500E+06 19 2.639E+06 80 8.333E+06 105 8.750E+06 Ni RHO(I) UCMa) 2.7E-04 1674 6.191E+06 125 2.604E+07 172 ?-150E+07 56 9.333E+06 55 5.500E+06 ' 207 3.450E+07 84 2.100E+07 141 2.350E+07 75 9.375E+06 118 1.180E+07 45 5.625E+06 85 1.063E+07 57 1.187E+07 90 1.406E+07 71 1.183E+07 44 4.400E+06 106 ~_208E+07 90 9.000E+06 34 9.444E+06 86 1.792E+07 77 1.283E+07 1818 1.345E+07 19 RATIO URANIUM AGE STD. DEV. (Ns~NO (PPM) 0,~ (MA) 0.58 119.0 121.2 0.82 98.3 169.4 0.70 42.7 144.2 0.65 25.1 135.6 ' 0.65 157.7 135.1 1.32 96.0 270.9 0.82 107.4 168.6 0.67 4?-9 138.1 0.67 53.9 138.7 1.62 25.7 331.1 1.18 48.6 241.8 0.91 54.3 188.3 1.78 64.3 361.9 0.70 54.1 145.8 0.91 20.1 187.6 0.62 101.0 129.1 1.67 41.1 339.9 0.56 43.2 116.0 0.93 &1.9 191.9 1.36 58.7 279.4 0.92 18.3 20.1 30.5 29.4 15.6 40.3 21.9 25.7 20.7 63.8 36.6 36.7 49.3 27.4 41.5 20.7 46.8 33.5 30.5 4~0 61.5 GMC Data Report No. 189 Page 32/51 PROJECT NAME: BARROW ARCH DATE: .... 1110/91' ,~Md PLE NUMBER: SM8820 LAB NUMBER: SMU LONGITUDE: ' ~'W REACTOR RUN NUMBER: RR-7-11-90Z NEUI'R~ FLUX: 7.000E+15 # SPON TRACKS (FLUX) 1000 # IND. TRACKS (FLUX) 6000 NUMBER OF (~RAINS: 8 MICROSCOPE: OLYMPUS MAGNIFICATION: 1250 X ROCK TYPE: SAG RIVER SS. MINERAL: ZIRCON AREA USED GRAIN # (SQ. CM) Ns I 4.8E-06 40 2 4.8E-06 32 3 4.8E-06 38 4 4.8E-06 27 5 4.8E-06 33 6 4.8E-06 43 7 6.4E-06 72 8 7.2E-06 27 9 0.0E+00 0 10 0.0E+00 0 11 0.0E+00 0 12 0.0E+00 0 13 0.0E+00 0 14 0.0E+00 ' 0 15 0.0E+00 0 16 0.0E+00 0 17 0.0E+00 0 18 0.0E+00 0 19 0.0E+00 0 20 0.0E+00 0 RHO(S) 8.333E+06 6.667E+06 7.917E+06 5.625E+06 6.875E+06 8.958E+06 1.125E+07 3.750E+06 ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR Ni RHO(I) RATIO 47 1.958E+07 22 9.167E+06 25 1.042E+07 15 6.250E+06 24 1.000E+07 29 1.208E+07 66 2.063E+07 12 3.333E+~ :. 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR ' 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0.85 1.45 1.52 1.80 1.38 1.48 1.09 2.25 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.2E-05 312 7.358E+06 240 1.132E+07 1.30 FI'AGE: 266.6 Ma UPPER CI: 319.4 Ma LOWER CI: 222.4 Ma STD ERR: 23.20 Ma C. COB:F: 0.926 . CHI~ 9.469 7 · .. AVG. AGE: 302,3 Ma STD. ERR: 31.3 URANIUM AGE STD. DEV. (MA) (MA) 89.5 175.8 38.3 41.9 297.6 83.1 47.6 310.7 80.7 28.6 366.3' 118.6 45.7 281.7 76.2 55.2 303.3 73.6 94.3 224.5 39.0 15.2 454.8 158:5 ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR ' ~'~.0 ERR ERR '0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR ERR 0.0 ERR 51.8 GMC Data Repo~ No. 189 Page 33/51 PRC)JEC~ NAME: BARROW ARCH DATE: :: ,~t~' 1110/91 ;AMPLE NUMBER: SBTW1 1906 LATITIJDE: *' N LAB NUMBER: SMU LONGITUDE: *'W REACTOR RUN NUMBER: RR-7-11-90Z NEUTRON FLUX: 7.000E. 15 ELEVATION (Id): MICROSCOPE: OLYMPUS # ~ ~CKS (FLUX) 1000 # IND. 'rF~CKS (FLUX) 6OOO NUMBER OF GRAINS: 18 MAGNIRCATION: 1250 X ROCK TYPE: TOROK FM. MINERAL: ZIRCON AREA USED GRAIN # (SQ. GM) I 8.0E-06 2 2.0E-05 3 2.0E-05 4 1.2E-05 5 1.6E-05 6 9.6E-06 7 7.2E-06 8 4.0E-05 9 8.0E-06 10 9.6E-06 11 2.0E-05 12 8.0E-06 13 2.0E-05 14 2-0E-05 15 1.2E-05 16 1.2E-05 17 2.0E-05 18 4.8E-06 19 0.0E+00 20 0.0E+00 RHO(S) Ns (/C~=) 54 6.750E+06 135 6.750E+06 181 9.050E+06 98 8.167E+06 100 6.250E+06 48 5.000E+06 42 5.833E+06 124 3.100E+06 42 5.250E+06 100 1.042E+07 152 7.600E.06 75 9.375E+06 81 4.050E+06 46 2.300E+06 61 5.083E+06 28 2.333E+06 23 1.150E+06 9 1.875E+06 0 ERR 0 ERR RHO(I) Ni (ICM~ 70 1.750E+07 73 7.300E+06 86 8.600E+06 40 6.667E+06 72 9.000E+06 31 6.458E.06 38 1.056E+07. 244 1.220E+07 79 1.975E+07 113 2.354E+07 80 8.000E+06 70 1.750E+07 70 7.000E+06 71 7.100E+06 51 8.500E+06 20 3.333E+06 20 2.000E+06 7 2.917E+06 0 ERR 0 ERR RATIO (Ns/NO 2.7E-04 1399 5.236E+06 1235 9.244E+06 FT AGE: 233.0 Ma UPPER CI: 257.9 Ma LOWER CI: 210.4 Ma STD ERR: 11.46 Ma C. COEFF: 0.547 AVG. AGE: 261.6 Ma 17 URANIUM AGE STD. DEV. (PPM) (MA) (MA) 0.77 80.0 159.6 29.4 1.85 33.4 376.1 56.1 2.10 39.3 426.3 57.7 2.45 ' 30.5 493.7' 94.1 1.39 41.1 284.5 45.0 1.55 29.5 316.4 73.7 1.11 48.3 227.4 51.5 0.51 55.8 105.6 12.2 0.53 90.3 110.4 21.4 0:88 107.6 182.7 25.8 1.90 36.6 386.1 54.9 1.07 80.0 220.6 37.4 1.16 32.0 237.9 39.7 0.65 32.5 134.3 25.8- 1.20 38.9 245.7 47.4 1.40, 15.2 286.7 84.5 1.15 9.1 2'06.4 72.7 1.29 13.3 263.8 133.2 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 1.13 42.3 GMC Data Report No. 189 Page 34/5l PROJECT NAME: SAMPLE NUMBER: SB'I1N3 200 LAB NUMBER: SMU REACTOR RUN NUMBEFI: RR-7-11-90Z NEUTRON FLUX: # IND. TRACKS (FLUX) NUMBER OF GRAINS: GRAIN 1 1.2E-05 2 9.6E-06 3 ' '1.~E-05. 4 1.6E-05 5 9.6E-06 6 1.2E-05 7 4.8E-06 8 1.6E-05 9 1.3E-05 ' 10 O. OE+O0 11 O. OE+O0 12 O.OE+O0 13 O. OE+O0 14 O. OE+O0 15 O. OE+O0 16 0.0E+00 17 0.0E+00 18 0.0E+00 19 O. OE+O0 20 O.OE+O0 1.0E-04 BARROW ARCH DATE: 1110191 LONGITUDE: *'W ELEVA~ON (M): 6:900E+15 MICROSCOpF: OLYMPUS 1000 MAGNIRCATION: 1250 X 6000 ROCK'fYPF_: TOROK FM. 9 MINERAI~ ZIRCON RHO(S) RHO(I) Ns (ICI~) Ni (ICNFz) 47 3.917E+06 35 5.833E+06 22 2_292E+06 22 4.583E+06 115 9.583E+06 132 2.200E+07 105 6.563E+06 90 1.125E+07 26 2-708E+06 33 6.875E+06 45 3.750E+06 52 8.667E+06 31 6.458E+06 35 1.458E+07 64 4.000E+06 137 1.713E+07 15 1.172E+06 19 2.969E+06 0 ' ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 · ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 470 4.485E+06 555 1.059E+07 RA~O 1.34 1.00 0.87 1.17 0.79 0.87 0.89 0.47 0.79 0:00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.85 I=1. AGE: UPPER Cl: LOWER CI: CHI~. AVG. AGE: 172.5 Ma 198.5 Ma 149.8 Ma 11.64 Ma '0.833 25.770 -184.9 Ma 17.0 8 URANIUM AGE 27.1 21.3 102.0 52_2 31.9 40.2 67.6 79.4 13.8 ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR 271.4 203.2 177.4 236.4 160.6 176.2 180.3 95.7 160.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 61.3 61.7 23.4 34.9 42_5 36.4 14.9 55.9 ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR 49.1 GMC Data Report No. 189 Page 35/51 PROJECT NAME: BARROW ARCH DATE: 1110/91 FI' AGI=- 426.5 Ma SAMPLE NUMBER: SBTW3 2430 LATITUDE: "N UPPER CI: 492.2 Ma LAB NUMBER: SMU LONGITUDE: "W LOWER CI: 369.3 Ma REACTOR RUN NUMBER: RR-7-11-90Z ELEVATION (M): STD ERR: 28.79 Ma NEUTRON FLUX: 6,900E+15 MICROS(X)PE: OLYMPUS C. COEFF: 0.828 # SPON TRACKS (FLUX) 1000 MAGNIRCATION: 1250 X CHla: 31.166 # IND. TRACKS (FLUX) 6000 ROCKTYPE: BARROW SS. AVG. AGE: 476.0 Ma NUMBER OF GRAINS: 12 MINERAl_: ZIRCON STD. ERR: 51.4 AREA USED GRAIN # (SQ. CM) I 1.2E-05 2 8.0E-06 3 8.0E-06 4 7.2E-06 5 1.2E-05 6 7.2E-06 7 ?_0E-05 8 7.2E-06 9 7.2E-06 10 7.2E-06 11 6.4E-06 12 1.2E-05 13 0.0E+00 14 0.0E+00 15 0.0E+00 16 0.0E+00 17 0.0E+00 18 0.0E+00 19 0.0E+00 20 0.0E+00 RHO(S) Ns (/CM=) 93 7.750E+06 130 1.625E+07 55 6.875E+06 29 4.028E+06 71 5.917E+06 47 6.528E+06 150 7.500E+06 32 47. ~?. E+06 35 4.861E+06 32 4.4~E+06 25 3.906E+06 23 1.917E+06 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR RHO(i) RATI© URANIUM Ni (ICM=) (Ns/NO (PPM) 44 7.333E+06 2.11 34.0 422.2 51 1.275E+07 2.55 59.1 505.8 20 5.000E+06 2.75 23.2 544.0 7 1.944E+06 4.14 9.0 803.0 67 1.117E+07 1.06 51.8 215.1 16 4.444E+06 2.94 20.6 579.5 59 5.900E+06 2.54 27.4 504.5 11 3.056E+06 2.91 14.2 574.2 12 3.333E+06 2.92 15.5 575.6 15 4.167E+06 2.13 19.3 426.0 18 5.625E+06 1.39 26.1 280.5 18 3.000E+06 1.28 13.9 258.5 0 ERR 0.00 ERR 0.0 0 ERR 0.00 ERR 0.0 0 ERR 0.00 ERR 0.0 0 ERR 0.00 ERR 0.0 0 ERR 0.00 ERR 0.0 0 ERR 0.00 ERR 0.0 0 ERR 0.00 ERR 0.0 0 ERR 0.00 ERR 0.0 AGE STD. DEV. (MA) (IV{A) 78.6 85.3 143.3 339.3 37.4 168.9 79.4 201.6i 193.5 ! 134.11 87.2j 81.8i ERR ;' ERR ERR ERR ERR ERR ERR 1.1E-04 722 6.311E+06 338 5.909E+06 2.14 27.4 GMC Data Report No. 189 Page 36/51 PROJECT NAME: BARROWARCH SAMPLE NUMBER: SBTW3 2703 LAB NUMBEP¢ SMU DATE: 1110/91 LATITUDE: *' N Fi' AGE: ' 4:46,8 Ma UPPER CI: 503.4 Ma LONGITUDE: *'W LOWER CI: 396.3 Ma REACTOR RUN NUMBER: RR-7-11-90Z ELEVATION (M): SID ERR: 25.04 Ma NEUTRON FLUX: 6.900E, 15 MICROSCOPE: OLYMPUS C, COEFF: 0.800 # SPON TRACKS (FLUX) 1000 # I.ND. TRACKS (FLUX) 6000 NUMBER OF GRAINS: 14 MAGNIRCATION: 1250 X CHi~. ROCKTYPE: SHUBUK FM. AVG. AGE: . . MINERAL: ZIRCON STD. ERR: 52.554 441.9 Ma 51.8 AREA USED GRAIN # (SQ. ~ Ns 1 1 o6E-05 40 2 1.2E-05 75 3 2.0E-05 257 4 9.6E-06 45 5 7.2E-06 55 6 1.2E-05 54 7 1.6E-05 150 8 2.0E-05 142 9 9.6E-06 50 10 8.0E-06 124 11 7.2E-06 22 12 4.8E-06 65 13 1.3E-05 80 14 1.3E-05 58 15 0.0E+00 0 16 0.0E,00 0 17 0.0E+00 0 18 0.0E+00 0 19 0.0E+00 0 20 0.0E+00 0 1.7E-04 PaCKs) ~_500E+06 6.250E+06 1.285E+07 4.688E+06 7.639E+06 4.500E+06 9.375E+06 7.100E+06 5.208E+06 1.550E+07 3.056E+06 1.354E+07 6.250E+06 4.531E+06 ERR ERR ERR ERR ERR ERR Ni 1217 7.244E+06 35 46 75 35 25 37 53 77 25 27 11 22 40 35 0 0 0 543 4.375E+06 7.667E+06 7.500E+06 7.292E+06 ' 6.944E+06 6.167E+06 6.625E+06 7.700E+06 5.208E+06 6.750E+06 3.056E+06 9.167E+06 6.250E+06 5.469E+06 ERR ERR ERR ERR ERR ERR RATIO (Ns/NO 1.14 1.63 3.43' ~ 1.29 2.20 1.46 2.83 1.84 2.00 4.59 2_00 2.95 2.00 1.66 0.00 0.00 0.00 0.00 0.00 0.00I 6.464E+06 2.24 URANIUM AGE (PPM) 20.3 35.6 34.8 33.8 32.2 28.6 30.7 35.7 24.2 31.3 14.2 42.5 29.0 25.4 ERR ERR ERR ERR ERR ERR 231;7 54.2 328.1 62.5 671.2 91.C 260.1. 59.3 438.8 106.9 294.4 63.6 559.2 91.4 369.9 53.8 400.2 99.0 884.5 400.2 148.4 582.7 145.1 400.2 78.7 333.3 7?_2 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR 0.0 ERR · 0.0 ERR 30.0 GMC Data Report No. 189 Page 37/51 PROJECT NAME: BARROW ARCH DATE: '1110191 . ',~ SAMPLE NUMBER: TOP2087 LATITUDE: °' N LAB NUMBER: SMU LONGITUDE: °'W REACTOR RUN NUMBER: RR-7-11-90Z NBJTRON R. UX: 6.400E+15 ELEVATION (M): MICROSCOPE' OLYMPUS # SPON TRACKS (FLUX) 1000 # IND. TRAC.,KS (R.UX) 6000 NUMBER OF GRAINS: 20 MAGNIRCATION: 1250 X ROCK'I'YPE NANUSHUK GR. MINERAL: ZIRCON FTAGE:..':~' 152.3 'Ma UPPER el: 170.1 *-Ma LOWER CI: 136.4 Ma STD ERR: 8.20 Ma C. COEFF: 0.848 CI-II~ 61.785 AVG. AGE: 161.8 Ma STD. ERFIc 17_2 AREA USED GRAIN # (SQ. CM) Ns I 6,4E-06 45 2 7.2E-06 60 3 1.2E-05 86 4 6.4E-06 29 5 7.2E-06 31 6 4.8E-06 17 7 1.2E-05 31 8 7.2E-06 44 9 4.8E-06 30 10 3.2E-06 31 11 7.2E-06 53 12 1.3E-05 150 13 2.0E-05 133 14 3.2E-06 20 15 3.2E-06 16 16 1.2E-05 65 17 3.2E-06 23 18 6.4E-06 14 19 4.8E-06 21 20 2.0E-05 30 1.6E-04 929 RHO(S) (/cM=) 7.031E+06 8.333E+06 7.167E+06 4.531E+06 4.306E+06 3.542E+06 2.583E+06 6.111 E+06 6.250E+06 9.688E+06 7.361E+06 1.172E+07 6.650E+06 6.250E+06 5.000E+06 5.417E+06 7.188E+06 2.188E+06 4.375E+06 1.500E+06 5.665E+06 Ni RHO(I) 50 1.563E+07 57 .1.583E+07 95 1.583E+07 24 7.500E+06 25 6.944E+06 22 9.167E+06 66 1.100E+07 100 2. 778E+07 60 2.500E+07 30 1,875E+07 65 1.806E+07 113 1.766E+07 165 1.650E+07 22 1.375E+07 20 1.250E+07 116 1.933E+07 17 1.063E+07 21 6.563E+06 24 1.000E+07 62 6.200E+06 1154 1.407E+07 RATIO URANIUM (Ns/NO (PPM) 19 AGE STD. DEV. (MA) (MA) 0.90 78.1 170.1 35.4 1.05 79.2 198.5 37.3 0.91 79.2 171.0 26.1 1.21 37.5 227.3' 63.2 1.24 34.7 233.1 63.2 0.77 45.8 146.3 47.5 0.47 55.0 89.3 19.7 0.44 138.9 83.7 15.4 0.50 125.0 95.0 21.5 1.03 93.8 194.9 50.3 0.82 90.3 154.3 29.0 1,33 88.3 249.3 32.2 0.81 82.5 152.5 18.5 0.91 68.8 171.7 53.4 0.80 62.5 151.4 51.0 0.56 96.7 106.4 16.9 1.35 53.1 254.0 81.7 0.67 32.8 126.4 43.8 0.88 50.0 165.4 49.7 0.48 31.0 92.0 20.7 70.4 0.81 GMC Data Report No. 189 Page 38/51 PROJECT NAMI=- BARROW ARCH DATE: 1110/91 SAMPLE NUMBER: TOP6490 LATITUDE: °' N LAB NUMBER: SMU LONGn'UDE: °'W REACTOR RUN NUMBER: RR-7-11-90Z ELEVATION (M): NEUTRON FLUX: 6.400E+15 MICR~E: OLYMPUS # SPON TRACKS (FLUX) 1000 # IND. TFIA~ (FLUX) 6000 NUMBER OF GRAINS: 20 MAGNIRCATION: 1250 X ROCK TYPE: TOROK FM. MINERAL: ZIRCON AREA USED GRAIN # (SQ. CM) RHO(S) Ns (/Ca=) 1 2.0E-05 173 8.650E+06 2 1.3E-05 77 6.016E+06 3 7.2E-06 31 4.306E+06 4 1.2E-05 43 3.583E+06 5 7.2E-06 66 9.167E+06 6 1.2E-05 74 6.167E+06 7 4.8E-06 30 6.250E+06 8 9.6E-06 113 1.177E+07 9 1.2E-05 52 4.333E+06 10' 9.6E-06 104 '1.083E+07 11 7.2E-06 135 1.875E+07 12 4.8E-06 46 9.583E+06 13 2.0E-05 190 9.500E+06 14 6.4E-06 88 1.375E+07 15 2.0E-05 185 9.250E+06 16 6.4E-06 44 6.875E+06 17 7.2E-06 53 7.361E+06 18 7.2E-06 20 2.778E+06 19 4.8E-06 30 6.250E+06 20 7.2E-06 97 1.347E+07 Ni RHO(I) (/ca=) 207 2.070E+07 54 8.438E+06 28 7.778E+06 72 1.200E+07 68 1.889E+07 71 1.183E+07 20 8.333E+06 172 3.583E+07 73 1.217E+07 75 1.563E+07 71 1.972E+07 30 1.250E+07 181 1.810E+07 20 6.250E+06 117 1.170E+07 26 8.125E+06 54 1.500E+07 22 6.111E+06 25 1.042E+07 60 1.667E+07 2.0E-04 1651 8.322E+06 1446 1.458E+07 FT AGE: UPPER Cl: LOWER Cl: STD ERR: C. COEFF: CHI=.· AVG. AGE: 215.0 Ma 237.0 Ma 195.0 Ma 10.16 Ma 0.816 119.536 1 254.3 Ma 34.5 RATIO URANIUM (Ns/NO (PPM) AGE STD. DEV (MA) OaA) 0.84 103.5 158.1 17.: 1.43 42.2 267.4 48,.: 1.11 38.'9 208.6 54.; 0.60 60.0 113.3' 0.97 94.4 183.2 32.: 1.04 59.2 196,5 33.: 1.50 41,7 281.0 81 ' 0.66 179.2 124.6 15.; 0.71 60.8 135.0 24.! 1.39 78.1 260.2 40., 1.90 98.6 354.1 53.,' 1.53 62.5 287.1 68.'.. 1.05 90.5 197.9 21.( 4.40 31.3 791.8 198.( 1.58 58.5 295.8 36.~ 1.69 40.6 316.1 78.! 0.98 75.0 185.2 36~,~ 0.91 30.6 171.7 53.~ 1.20 52.1 225.8 61,{ 1.62 83.3 302.3 50.; 1.14 72.9 GMC Data Report No. 189 Page 39/:51 PROJECT NAME: BARROW ARCH DATE: 1110191 SAMPLE NUMBERc WTF7539 LAB NUMBER: SMU LATITUDE: *' N LONGITUDE: *'W REACTOR RUN NUMBER: RR-7-11-90Z NEUTRON FLUX: 7.000E+ 15 ELEVATION MICR~E OLYMPUS # SPON TRACKS (FLUX) 1000 # IND. TRACKS (FLUX) 6000 NUMBER OF GRAINS: 9 MAGNIRCATION: 1250 X ROCKTYPE: SUBLIK FM. MINERAl- ZIRCON AREA USED GRAIN # (SQ. CM) Ns I 4.8E-06 92 2 4.8E-06 43 3 1.2E-05 150 4 3.2E-06 22 5 3.2E-06 60 6 7.2E-06 62 7 4.8E-06 48 8 1.3E-05 150 9 3.2E-06 28 10 0.0E+00 0 11 0.0E+00 0 12 0.0E*00 0 13 0.0E+00 0 14 0.0E.00 0 15 0.0E+00 0 16 0.0E+00 0 17 0.0E.00 0 18 0.0E+00 0 19 0.0E+00 0 20 0.0E+00 0 5.6E-05 655 RHO(S) (/ca=) 1.917E+07 8.958E+06 1.250E+07 6.875E+06 1.875E+07 8.611E+06 1.000E+07 1.172E+07 8.750E+06 ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR ERR 1.170E+07 RHO(I) Ni (/CM=) 56 ?-333E+07 ~ 21 8.750E+06 51 8.500E+06 15 9.375E+06 27 1.688E+07 27 7.500E+06 50 2.083E+07 74 1.156E+07 22 1.375E+07 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 0 ERR 343 1.225E+07 RATIO Fi' AGE: UPPER Cl: LOWER CI: CHI~ AVG. AGE: STD. ERR: 388.0 Ma 448.5 Ma 335.4 Ma 26.64 Ma 24.043 8 381.2 Ma 42.0 URANIUM (PPU) AGE STD. DEV. (MA) (MA) 1.64 106.7 335.2 57.9 2.05 40.0 415.1 111.4 2.94 38.9 588.2 97.4 1.47 4?__9 300.0 101.0 2.22 77.1 449.3 105.3 2.30 34.3 463.8 108.1 0.96 95.2 198.0 40.6 2.03 52.9 411.1 60.1 1.27 62.9 261.2 74.9 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 0.00 ERR 0.0 ERR 1.91 56.0 GMC Data Report No. 189 Page 40/51 SOUTH MEADE NO. 1 4956 FT. F lO R 8 E Q s U E 4 C Y o 0 60 100 150 APPARENT FISSION TRACK AGE (MA) SOUTH MEADE NO. 1 3010 FT. F lO R 8 E Q s U E 4 .. I 0 50 100 150 APPARENT FISSION TRACK AGE (,MA) GUBIK NO. 2 1398 FT. 14 12 , . ¥ 0 5O 100 150 APPARENT FISSION TRACK AGE (MA) ZIRCON SOUTH MEADE NO. 1 9940 FT. F 20 R E 15 Q U 10 E N s C Y 0 0 50 100 150 APPARENT FISSION TRACK AGE (MAI, F R E Q U E N C Y 10 8 6 SOUTH BARROW NO. 1200 FT. 4 2 0 50 100 150 APPARENT FISSION TRACK AGE (MA) SOUTH BARROW NO. 2438 FT.' 3 F lO R N . 0 50 100 150 APPARENT FISSION TRACK AGE (MA) F R E Q U E N C Y F R E Q U E N C Y 20 15 10 SOUTH MEADE NO. 1 8820 FT. 5 0 50 100 150 APPARENT FISSION TRACK AGE (MA) EAST TESHEKPUK NO. 1 10,664 FT. 20 15 10 5 Il lllll I I i · . - · · · ~ ~,1 i 1 0 50 100 150 APPARENT FISSION TRACK AGE (MA) SOUTH BARROW NO. 3 200 FT. 8 i i i i i i i I . ---- ---- -;---~ ~ .... 0 50 100 150 APPARENT FISSION TRACK AGE (MA} SOUTH BARROW NO. 1 1906 FT. R 8: E (3 6 U E 4 N 2 Y o o 5o 16o 1~o APPARENT FISSION TRACK AGE (MA) 20 R 15 E Q U lO E N C Y 2.5 4.5 6'.5 8.5 16.5 1:~.5 14~.5 16.5 18.5 TRACK LENGTH (MICRONS) F R E 15 Q U lO E N C Y 0.5 2.5 4.5 6.5 8.5 10.5 12.5 14.5 16.5 18;5 TRACK LENGTH (MICRONS) GUBIK NO. 2 1398 FT. R E Q U E N C Y 0 50 100 150 APPARENT FISSION TRACK AGE (MA) 2O F R E Q U E N C Y 15 10 5 ...... ' , ,I'T'II , 11~ I ' (30'.5 2:5 4'.5 S:S 8:5 10.5 12.5 14,5 16.5 18.5 TRACK LENGTH (MICRONS) F R E Q U E N C Y F R E Q U E N C Y 20 SOUTH MEADE NO. 1 5992 FT. 0 50 100 150 APPARENT FISSION TRACK AGE (MA) 15 10 5 TRACK LENGTH (MIORONS) F R E Q U E N C Y 10 8 6 W. T. FORAN 7539 FT. 0 50 100 150 APPARENT FISSION TRACK AGE (MA) F R E Q U E N C Y 20 15 10 0.5 2.5 4.5 6.5 8'.5 ld.5 13.5 14~.5 1t~.5 11~.5 TRACK LENGTH (MICRONS) F R E Q U E N C Y EAST SIMPSON NO. 1 5129 FT. 0 SO 100 1~0 APPARENT FISSION TRACK AGE (MA) U lo C ¥ o ~'. 2.5 4.5 6;$ 8;S 1C~.S 14.5 14~.5 lS.S 18.5 TRACK LENGTH (MICRONS) TOPAGORUK NO. 1 2087 FT. R E Q U E N C Y 4 2 0 0 50 100 150 APPARENT FISSION TRACK AGE (MA) 2O F R E Q U E N C Y 15 4.5 6.5 8.5 10.5 12.5 14.5 16.5 1l~.5 TRACK LENGTH (MICRONS) R E Q U E N C Y W. T. FORAN NO. 1 8260 FT. F R E Q U E N C Y 0 50 100 150 APPARENT FISSION TRACK AGE (MA) 20 15 10 5 00.5 2.5 4.5 6.5 8:5 4.5 1~.5 1,~'~' 1(~.5 1E~.5 TRACK LENGTH (MICRONS) F l°I R s E Q 6 U E 4 N 2 C Y 0 TOPAGORUK NO. 1 6490 FT. 0 50 100 150 APPARENT FISSION TRACK AGE (MA) TOPAGORUK NO. 1 3240 FT. .0 50 100 150 APPARENT FISSION TRACK AGE (MA) 20 F R E 15 Q U lO E N C Y 15'2:5' : : ' : ' : ' . 4'.5 6.5 8.5 105125145165185 TRACK LENGTH (MICRONS} 20 E 15 Q U lO E N C Y 5 0.5 2.5 4.5 6.5 8.5 10.5 12.5 14.5 16.5 18.5 TRACK LENGTH (MICRONS) F R E Q U E N C Y 10 8 6 TOP^GORUK NO. 9436 FT. 0 50 100 150 APPARENT FISSION TRACK AGE (MA) TOPAGORUK NO. 1 10392 FT. (~ OO F R E Q U E N C Y 20 15 10 APPARENT FISSION TRACK AGE (MA) TOP 2087 ZIRCON 20 100 180 260 340 420 $00 580 APPARENT FISSION TRACK AGE (MA) SBTW3 243O ZIRCON F 10 ............................................... R 8 E Q 6 U E 4 C ¥ o- 20 100 180 260 340 420 500 51lO APPARENT FISSION TRACK AGE (MA) SBTW3 27O3 ZIRCON F 10 ...................................................................... R 8 E Q 6 U C ¥ o.~~ ~o ~oo ~oo ~oo 040 a~o soo'soo APPARENT FISSION TRACK AGE (MA) F 10 R 8 E Q. 6 U E N C Y SBTW3 200 ZIRCON 020 100 180 260 340 420 500 580 APPARENT FISSION TRACK AGE (MA) WFT 8264 ZIRCON R 8 E Q 6 U E 4 N 2 c Y 0 .--', .... ~ 20 100 180 280 340 420 500 580 APPARENT FISSION TRACK AGE (MA) WTF 7539 ZIRCON F R E Q U E N C Y 20 100 180 260 340 420 500 580 APPARENT FISSION TRACK AGE (MA) TOP6490 ZIRCON F 1°I 8 R E Q 6 U E 4 N 2 C Y o 20 lOO 18o 260 340 420 500 580 APPARENT FISSION TRACK AGE (MA) SM8820 ZIRCON F 1o R 8 E ' Q 6 U N 2 Y o. 20 100 180 260 340 420 500 580 APPARENT FISSION TRACK AGE (MA) SM 5992 ZIRCON F lO R 8 E Q 6 U E 4 N 2 C Y o 20 lOO 18o 260 340 420 500 580 APPARENT FISSION TRACK AGE (MA) SM 4956 ZIRCON F 10 R 8 E Q 6 U E 4 Y 0' 20 100 180 260 340 420 500 580 APPARENT FISSION TRACK AGE (MA) SBTW1 1906 ZIRCON F 1°I .......................................................... R . O - E 4 Y o- · 20 100 180 260 340 420 500 580 APPARENT FISSION TRACK AGE (MA)
