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Home My WebLink AboutGMC Data Report No. 226 Apatite fission track data derived from core of the following Alaskan Barrow Arch oil and gas wells: U. S. Navy Avak Test No.1 (3,571' - 3,792'), U. S. Navy South Barrow Test No.3 (602' - 2,799'), and North Slope Borough (U.S. Navy) South Barrow' No. 12 (2,220' - 2,250'). Received 6 May 1994 Total of 9 pages in report Alaska Geologic Materials Center Data Report No. 226 _.__________._________.__..__w Table 2.1: Summary of apatite fissIon track data · well samples from Barrow Archt Alaska (Geotrack Report #311) _. w· ._ ,...- _._ Sampl0 A vCl38e Present S~tlgraph1c Mean Predicted Fission Prcd1c1Cd .,umber depth tern peratUre 'I ,&C rrack range of Ø'3.Ck ran¡c of long1b mOM ago fission track length ~ track A¡ó ~ (m) ,C) (Ma) (µm) (µtn) (Ma) (Ma) S. hrrow.3 c.o,..e. eJ,,1' $~ GC311-1 187 6 ()2'-ð;22 I 146-97 13.06 ± 0.16 177.5 ± 13.5 CC311·1 533 I ~73¡J '-fl,Çl) 208·146 1~. 71 ± 0.40 102.2 t 20.2 0011..3 643 ~tJffl_.z/I' I 208·146 13.20 : 0.28 169.9 ± 41.7 0011-4 771 2. '1¿ J -2 f;-¿II 208·146 11.72 ± 0.$9 152.0 ± 333 OC311..~ 847 J J I 2A,·208 12.83 ± 0.$6 134.7 ± 34." 2) ;¡ 1'-2; 717 s. tJarrow~t1 <:-0 r-e. c..h 'I ~~ 0011-6 681 2.)2:20' ~ .1).150', . 24'..2.08 11.80 ± 1.07 77.3 ± 16.6 Avak..l (!pre.. c.-h'ì1 ~~. 0011-7 ' ( 1122 '3)7-11 -~ 7r.z 362.2A' 10.59 :t 0.70 86.7 ±80..s £x~ C-l?......j7t»/t~ ;~ ('~ Jt'iI~~ ,~ :5uZ r~$~ ..r~ ~ 2-7/47 IffY GMC Data Report No. 226 1/9 '- Table B.2: Length distribution summary data· well samples from Barrow Arch, Alaska (Geotrack Report #311) Sample number Mean Standard Nwnber Nwnber of Tracks in Length Intervals (µm) track length deviation of tracks 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 (µIn) (µm) (N) ,I I s. Barrow-3 ¡Ol.~6;2, GC311-1 13.06 ± 0.16 1.64 /730'··/75"0 GC311-2 12.71 ± 0.40 1.38 :21)79~-:.J/I r / GC311-3 13.20 ± 0.28 0.49 ). If 71, 1-2?~tl' GC311-4 11.72 ± 0.59 1.19 J. 16 ¡'''21ft / GC311-5 12.83 ± 0.56 0.79 1 I ' S. Barrow-12, 22Z.a 4225'1) GC311-6 11.80 ± 1.07 2.13 l- Avak-l ,$ 71'.. 377'.2/ GC311-7 106 12 3 4 2 1 - 2 5 13 25 32 21 7 - - 1 2 5 3 - 1 - 1 2 - - I 2 - 1 - - 1 1 - 4 ..... -............... 1 - 1 - ... - .. - ... 10.59 ± 0.70 1.56 5 -.................... ... 3 - 1 1 ..... -... -...... Track length measurements by P. O'Sullivan. GMC Data Report No. 226 2/9 GC311-01 APATITE IRRADIATION G187 SLIDE NUMBER 1 COUNTED BY: POS No. Ns Ni Na RATIO U RHOs RHOi F.T. AGE (ppm) (Ma) (--, 1 2 2 35 1.000 1.0 9.080E+04 9.080E+04 214.3 ± 214.4 2 276 265 40 1.042 111.6 1.096E+07 1.053E+07 223.0± 20.1 3 43 42 20 1.024 35.4 3.416E+06 3.337E+06 219.3 ± 47.9 4 28 36 21 0.778 28.9 2.1 19E+06 2.724E+06 167.3 ± 42.4 5 23 26 42 0.885 10.4 8.702E+05 9.837E+05 189.9 ± 54.6 6 15 17 80 0.882 3.6 2.980E+05 3.377E+05 189.5 ± 67.3 7 55 64 30 0.859 35.9 2.913E+06 3.390E+06 184.6 ± 34.3 8 33 37 100 0.892 6.2 5.244E+05 5.880E+05 191.5 ± 46.1 9 21 17 35 1.235 8.2 9.534E+05 7.718E+05 263.7 ± 86.3 10 16 18 64 0.889 4.7 3.973E+05 4.469E+05 190.8 ± 65.8 11 59 120 36 . 0.492 56.2 2.604E+06 5.297E+06 106.3 ± 17.1 12 10 17 50 0.588 5.7 3.178E+05 5.403E+05 126.9 ± 50.7 13 22 23 36 0.957 10.8 9.711E+05 1.015E+06 205.1 ± 61.4 14 10 17 80 0.588 3.6 1.986E+05 3.377E+05 126.9 ± 50.7 15 42 79 70 0.532 19.0 9.534E+05 1.793E+06 114.8 ± 22.1 16 5 11 50 0.455 3.7 1.589E+05 3.496E+05 98.3 ± 53.1 17 178 188 36 0.947 88.0 7.857E+06 8.298E+06 203.1 ± 21.9 18 27 26 16 1.038 27.4 2.682E+06 2.582E+06 222.4 ± 61.4 19 1 1 60 1.000 0.3 2.648E+04 2.648E+04 214.3 ± 303.1 20 12 14 42 0.857 5.6 4.540E+05 5.297E+05 184.1 ± 72.6 878 1020 18.2 1.480E+06 1.719E+06 Area of basic unit = 6.293E-07 cm-2 Chi Squared = 30.991 with 19 degrees of freedom P(chi squared) = 4.0 % Correlation Coefficient = 0.973 Variance of SQR(Ns) = 13.96 Variance of SQR(Ni) = 14.77 Age Dispersion = 18.313 % Ns/Ni = 0.861 ± 0.040 Mean Ratio = 0.847 ± 0.047 Ages calculated using a zeta of 352.7 ± 5 for SRM612 glass Rho D = 1.236E+06cm-2; ND = 1944 POOLED AGE = 184.9 ± 9.8 Ma CENTRAL AGE = 177.2 ± 13.5 Ma GMC Data Report No. 226 3/9 GC311-02 APATITE IRRADIATIONG187 SLIDE NUMBER 2 COUNTED BY: POS No. Ns Ni Na RATIO U RHOs RHOi F.T. AGE (ppm) (11a) 1 4 4 25 1.000 2.7 2.542E+05 2.542E+05 214.3 ± 151.6 2 16 17 12 0.941 23.9 2.119E+06 2.251E+06 201.9 ± 70.5 3 3 7 25 0.429 4.7 1.907E+05 4.449E+05 92.7 ± 64.0 4 3 5 16 0.600 5.3 2.980E+05 4.966E+05 129.4 ± 94.6 5 3 11 25 0.273 7.4 1.907E+05 6.992E+05 59.2 ± 38.6 6 7 10 36 0.700 4.7 3.090E+05 4.414E+05 150.8 ± 74.4 7 3 4 21 0.750 3.2 2.270E+05 3.027E+05 161.4 ± 123.3 8 0 2 28 0.000 1.2 o. OOOE +00 1. 135E+05 O.O± 0.0 9 19 27 28 0.704 16.2 1.078E+06 1.532E+06 151.5 ± 45.6 10 17 75 90 0.227 14.0 3.002E+05 1.324E+06 49.2 ± 13.3 11 0 1 50 0.000 0.3 O.OOOE+OO 3. 178E+04 O.O± 0.0 12 8 34 30 0.235 19.1 4.238E+05 1.801E+06 51.1 ± 20.1 83 197 8.6 3.417E+05 8.110E+05 Area of basic unit = 6.293E-07 cm-2 Chi Squared = 21.590 with 11 degrees of freedom P(chi squared) = 2.8 % Correlation Coefficient = 0.728 Variance of SQR(Ns) = 2.07 Variance of SQR(Ni) = 4.81 Age Dispersion = 41.129 % Ns/Ni = 0.421 ± 0.055 Mean Ratio = 0.488 ± 0.099 Ages calculated using a zeta of 352.7 ± 5 for SRM612 glass Rho D = 1.236E+06cm-2; ND = 1944 POOLED AGE = 91.2 ± 12.2 Ma CENTRAL AGE = 102.1 ± 20.2 Ma GMC Data Report No. 226 4/9 GC311-03 APATITE IRRADIATION G187 SLIDE NUMBER 3 COUNTED BY: POS No. Ns Ni Na RATIO U (ppm) RHOs RHOi F.T. AGE (Ma) 1 2 17 13 30 18 20 38 56 70 0.944 5.4 4. 824E+05 5.108E+05 202.6 ± 68.7 0.650 4.8 2.951E+05 4.540E+05 140.1 ± 50.1 5.1 3.783E+05 4.792E+05 Area of basic unit = 6.293E-07 cm-2 Chi Squared = 0.580 with 1 degrees of freedom P(chi squared) = 44.6 % COITelation Coefficient = -1.000 Variance of SQR(Ns) = 0.13 Variance of SQR(Ni) = 0.03 Age Dispersion = 0.000 % (did not converge) Ns/Ni = 0.789 ± 0.193 Mean Ratio = 0.797 ± 0.147 Ages calculated using a zeta of 352.7 ± 5 for SRM612 glass Rho D = 1.236E+06cm-2; ND = 1944 POOLED AGE = 169.8 ± 41.7 Ma CENTRAL AGE = 169.8 ± 41.7 Ma GMC Data Report No. 226 5/9 GC311-04 APATITE IRRADIATION GI87 SLIDE NUMBER 4 COUNTED BY: p~S No. Ns Ni Na RATIO U (ppm) RHOs RHOi F.T. AGE (Ma) 1 1 2 30 0.500 1.1 5.297E+04 1.059E+05 108.0 ± 132.4 2 16 33 20 0.485 27.8 1.271E+06 2.622E+06 104.8 ± 32.0 3 11 9 64 1.222 2.4 2.731E+05 2.235E+05 261.0 ± 117.5 4 8 7 40 1.143 2.9 3. 178E+05 2.781E+05 244.3 ± 126.6 36 51 5.6 3.715E+05 5.262E+05 Area of basic unit = 6.293E-07 cm-2 Chi Squared = 4.032 with 3 degrees of freedom P(chi squared) = 25.8 % COITelation Coefficient = 0.869 I Variance of SQR(Ns) = 1.65 Variance of SQR(Ni) = 3.34 Age Dispersion = 22.734 % Ns/Ni = 0.706 ± 0.154 Mean Ratio = 0.837 ± 0.200 Ages calculated using a zeta of 352.7 ± 5 for SRM612 glass Rho D = 1.236E+06cm-2; ND = 1944 POOLED AGE = 152.0 ± 33.3 Ma CENfRAL AGE = 160.4 ± 41.3 Ma GMC Data Report No. 226 6/9 GC311-05 APATITE IRRADIATION 0187 SLIDE NlJÑffiER 5 COUNTED BY: P~S No. Ns Ni Na RATIO U (ppm) RHOs RHOi F.T. AGE (Ma) 1 2 8 17 25 12 28 40 50 0.667 4.0 2.542E+05 3.814E+05 143.7 ± 65.7 36 0.607 13.1 7.504E+05 1.236E+06 131.0 ± 40.4 7.8 4.619E+05 7.391E+05 Area of basic unit = 6.293E-07 cm-2 Chi Squared = 0.029 with 1 degrees of freedom P(chi squared) = 86.5 % Correlation Coefficient = 1.000 Variance of SQR(Ns) = 0.84 Variance of SQR(Ni) = 1.67 Age Dispersion = 0.000 % (did. n()t converge) Ns/Ni = 0.625 ± 0.159 Mean Ratio = 0.637 ± 0.030 Ages calculated using a zeta of 352.7 ± 5 for SRM612 glass Rho D = 1.236E+06cm-2; ND = 1944 POOLED AGE = 134.8 ± 34.5 Ma CENTRAL AGE = 134.8 ± 34.5 Ma GMC Data Report No. 226 7/9 GC311-06 APATITE IRRADIATION 0187 SLIDE NUMBER 6 COUNTED BY: POS No. Ns Ni Na RATIO U (ppm) RHOs RHOi F.T. AGE (Ma) 1 3 9 20 0.333 7.6 2.384E+05 7.151E+05 72.2 ± 48.2 2 2 2 70 1.000 0.5 4.540E+04 4.540E+04 214.3 ± 214.4 3 2 6 25 0.333 4.0 1.271E+05 3.814E+05 72.2 ± 59.0 4 23 67 80 0.343 14.1 4.569E+05 1.331E+06 74.4 ± 18.1 30 84 7.3 2. 445E+05 6. 845E+05 Area of basic unit = 6.293E-07 cm-2 Chi Squared = 1.202 with 3 degrees of freedom P(chi squared) = 75.3 %. Con-elation Coefficient = 0.998 Variance of SQR(Ns) = 2.70 Variance ofSQR(Ni)=: 9.13 Age Dispersion = 0.000 % (did not converge) NslNi = 0.357 ± 0.076 Mean Ratio = 0.502 ± 0.166 Ages calculated using a zeta of 352.7 ± 5 for SRM612 glass Rho D = 1.236E+06cm-2; ND = 1944 POOLED AGE = 77.4 ± 16.6 Ma CENTRAL AGE = 77.4 ± 16.6 Ma GMC Data Report No. 226 8/9 GC311-07 APATITE IRRADIATION 0187 SLIDE NUMBER 7 COUNTED BY: P~S No. Ns Ni Na RATIO U (ppm) RHOs RHOi F.T. AGE (Ma) 1 2 o 21 21 11 18 29 54 0.000 3.4 O.OOOE+OO 3.237E+05 0.0 ± 0.0 20 1.167 15.2 1. 669E+06 1.430E+06 249.3 ± 80.4 6.6 4.510E+05 6.227E+05 Area of basic unit = 6.293E-07 cm-2 Chi Squared = 10.212 with 1 degrees of freedom P(chi squared) = 0.1 % Correlation Coefficient = 1.000 Variance of SQR(Ns) = 10.50 Variance of SQR(Ni) = 0.43 Age Dispersion = %123.877 % Ns/Ni = 0.724 ± 0.207 Mean Ratio = 0.583 ± 0.583 Ages calculated using a zeta of 352.7 ± 5 for SRM612 glass Rho D = 1.236E+06cm-2; ND = 1944 POOLED AGE = 155.9 ± 44.9 Ma CENTRAL AGE = 86.8 ± 80.6 Ma 9/9 GMC Data Report No. 226