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HomeMy WebLinkAboutGMC Data Report No. 109Vitrinite reflectance data and analysis of the 900 - 13,816 foot interval
of the Colorado Oil Malaspina Unit No. 1-A well
Received 9 February 1989
Total of 25 pages in report
Geologic Materials Center Data Report 109
VITRINITE REFLECTANCE ANALYSIS OF THE INTERVAL 900 - 13,816 FT
MALASPINA # lA WELL, ALASKA
IntroducliO,rl
.!
This report describes the vitrinite reflectance analysis of 15 cuttings samples from the
Malaspina # lA oil exploration well.
Fifty vitrinite reflectance measurements for each sample are taken wherever
possible utilizing a Zeiss 01K photometer attachment mounted on a Zeiss Pho-
toscope 1. Each measurement is qualified as to poor (P), good (G) or excellent (E).
Depending upon such factors as; particle size, pitting, scratching or the proximity
to pyritic particles. The measurements of particles interpreted to be reworked
vitrinite are labeled with an "R" while the measurements of particles interpreted
to be caved material are' labeled. With .a "C". A .table and a plot of all
measurements displayed as a histogram for each sample are g!ven in-APpendix A.
A vitrinite reflectance log is included which displays each histogram at the level of
the sample. The material considered as caved is cross-hatched in blue while the
material considered to be reworked is cross-hatched in red. The good and
excellent samples are coloured in solid green while the poor measurements are
coloured in cross-hatched green. Fudher colour copies of this log are available
through the Bujak Davies Group.
The laboratory procedures for the mounting and polishing of the vitrinite samples
follows the methodology described by Davies and Avery (1984) in a 'triple mount
stub with standard 600 grit,.3 micron and .05 micron polishing procedure on Buehler
Automet polishing equipment. This methodology results in a polished mount of
unoxidized kerogen.
The levels of vitrinite reflectance are compared to the Thermal Alteration Index (TAI)
of Bujak, Barss & Williams (1977a,b)in Table 1 and are subdivided into various levels
of thermal maturation for the generation of liquid and gaseous hydrocarbons. This
generation model will vary from basin to basin depending upon the geohistory and
kerogen compositions. .
GMC Data Report 109 Page 1/25
Bujak Davies Group Malaspina #1 ..... 2
VITR!NITE REFLECTANCE SUMMARY
Maturity Zones Based on Ro
900-5,760ft
6,600-12,750ft
13,350-13,823fl
Immature
Onset of Maturation
Marginally Mature
Immature Zone: 900-5.760ft
The two uppermost samples in'this zone, at 900 and 1,920ft, are entirely
reworked. At 3090ft there appears to be.several populations of vitrinite on the
histogram. The population chosen as in situ has an Ro=0.48%. At 4,200ft and 5,490ff
the vitrinite is again almost entirely reworked. One reading from in situ vitrinite in the
5,490ft sample, may suggest that the sample is still in the immature zone (Ro=0.47%);
this should not be heavily relied upon.
Onset of Maturation Zone: 6.600-.12.760fi
The sample at the top of this zone at 6,600fl contains very little vitrinite. It is
again almost entirely reworked. From only two in situ readings, the Ro=0.565%. This
may indicate that the sample is in the zone of onset. The 2,880ft sample (Ro=C].534%)
-is in aggreement with the overlying sample. Other samples deeper in this zone have
slightly depressed Ro's and only fair histogram distributions, due to the presence of
cavings and reworked material. The 10,560ft, 11,880ft and 12,510ft samples
(Ro's=0.501,0.530% and 0.540%, respectively) all have relatively good histogram
distributions and can be considered reliable.
Marginally Mature Zone: 13,350-1,3.823
Both samples in this zone have gaod histogram distributions, even though
they contain a fair amount of pyrite and little vitrinite: From fifty readings, taken on
both samples, the Ro's=0.736 and 0.798% indicate that these samples are well
within the oil window.
GMC Data Report 109 Page 2/25
Bujak Davies Group
Malaspina #1 ..... 3
REFERENCES
BUJAK, J.P., BARSS, M.S. & WILLIAMS, G.L.
1977 Offshore eastern Canada Part !. Offshore east Canada's organic
type and colour and hydrocarbon potential. Oil and Gas Journal,
vol.75, pp. 198-2132.
BUJAK, J.P., BARSS, M.S. & WILLIAMS, G.L.
1977 Offshore eastern Canada Pad II. Offshore east Canada's organic
type and colour and hydrocarbon potential. Oil and Gas Journal
vol.75, pp.96-100.
DAVIES, E.H. & AVERY, M.P.
1984 A system for vitrinite reflectance analysis on dispersed organic
matter for offshore eaStern Canada. In: .Current Research, Part A,
Geological SurveY of Canada, Paper 84-114, Pp.367-372.
GMC Data Report 109 Page 3/25
Bujak Davies Group Malaspina #1 ..... 4
TABLE 1: TAI & Ro%
TA[
Spo re Approx. Amorphous
col our Ro equiv, kerogen
Herbaceous-woody
kero~en
1 Green/Yellow Immature
1+ Yellow 0.35% Immature
2- Yellow/orange 0.45% Immature
2-to2 Orange 0.50% Onset of maturity
2 Orange/brown 0.60% Marginally mature
2to2+ Brown/orange 0.70% Marginally mature
2+ Light brown 0.9% Peak maturity
2+to3- L~Brown/brown 1.0% Highl.y mature
3- Brown 1.1% Highly mature
3-to3 Med. brown 1.2% Highly mature
3 Brown/df.brown 1.5% Overmature
3+ Dark brown 2.0% Overmature
4- B1 ack 2.5% Overmature
4 Black/corroded 4.0% Overmature
Ilnmature
Immature
Immature
Immature
Immature
Onset of maturity
-Onset of .maturity
Peak maturity
Peak maturity
Peak maturity
Peak maturity
Highly mature
Highly mature
Overmature
Table 1: Comparison of Vitrinite Reflectance (Ro%) and the Thermal
Alteration Index scale (TAI) of Bujak, Barss & Williams (1977a,b).
GMC Data Report 109 Page 4/25
Bujak Davies Group Malaspina #1
APPENDIX A
VITRINITE REFLECTANCE MEASUREMENTS AND HISTROGRAMS
GMC Data Report 109 Page 5/25
Client: M.M.S.
Well: MALASPINAilA
Area: ALASKA
Scientist: DUMCIUS
Date: JULY 1988
Samples are: F
VITRINITE DATA:
Sample Depth : 900.0
0.700 R 0.830 R 0.830 R 0.850 R 0.860 R 0.860
0.880 R 0.890 R 0.900 R 0.900 R 0.910 R 0.910
0.910 R 0.910 R 0.920 R 0.930 R 0.930 R 0.940
0.960 R 0.960 R 0.960 R 0.980 R 0.990 R 1.000
1.040 R 1.040 R 1.050 R 1.050 R 1.060 R 1.060
1.110 R 1.130 R 1.140 R 1.140 R 1.170 R 1.170
1.260 R 1.260- R 1.320 R 1.360 R 1.370 R 1.430
1.980 R
Actual Mean = 1.055
Actual Standard Deviation = 0.240
0.87O
0.910
0.950
1.030
1.060
1.180
1.900
m
Con~nent : Mostly fine light grey amorphous inorganic material; little vitrinite present.
Sample Depth : 1920.0
0.650 R 0.680 R 0.690 R 0.710 R 0.720 R 0.730
0.880 R 0.890 R 0.900 R 0.920 R 0.930 R 0.950
0.960 R 0.990 R 1.000 R 1.000 R 1.010 R 1.040
-1.140 R 1.150 R 1.210 R 1.250 R 1.260 R 1.290
1.300 R 1.330 R 1.330 R 1.330 R 1.330 R 1.380
1.440 R 1.450 R 1.470 R 1.490 R 1.550 R 1.570
1.660 R 1.790 R 1.790 R 1.810 R 2.030 R 2.120
2.240 R
Actual Mean = 1.253
Actual Standard Deviation - 0.404
Comment : Mostly fine light grey amorphous inorganic material; little vitrinite present.
· . .
Sample Depth : 3090.0
0.290 C 0.390 0.400 0.430 0.430 0.450
0.460 0.480 0.520 0.540 0.550 0.560
0.610 R 0.650 R 0.710 R 0.710 R 0.740 R 0.780
0.800 R 0.820 R 0.950 R 0.990 R 1.070 R 1.100
1.180 R 1.200 R 1.290 R 1.360 R 1.370 R 1.380
1.450 R 1.450 R 1.490 R 1.560 R 1.610 R 1.650
Actual Mean - 0.920 Actual Standard Deviation ~ 0.434
Edited Mean - 0.480 Edited Standard Deviation - 0.062
Comment : Mostly fine light grey amorphous inorganic material; little vttrtntte present.
0.840
0.950
1.070
1.290
1.400
1.590
2.140
O. 460
0.570
0.790
1.100
1.420
1.860
GMC Data Report 109 Page 6/25
Sample Depth : 4200.0
0.600 R 0.640 R 0.680 R 0.680 R 0.680 R 0.680 R 0.700
0.720 R 0.770 R 0.770 R 0.780 R 0.780 R 0.790 R 0.790
0.800 R 0.840 R 0.850 R 0.860 R 0.880 R 0.900 R 0.900
0.910 R 0.910 R 0.920 R 0.950 R 0.950 R 0.960 R 0.960
0.970 R 0.980 R 0.990 R 1.000 R 1.020 R 1.020 R 1.020
1.030 R 1.060 R 1.150 R 1.160 R 1.160 R 1.280 R 1.290
1.300 R 1.320 R 1.360 R 1.380 R 1.500 R 1.510 R 1.560
1.610 R
Actual Mean = 0.986
Actual Standard Oevlation = 0.257
Cor~nent : Mostly fine light grey amorphous inorganic material; little vltrintte present.
Sample Depth : 5490.0
0.470 0.740 R 0.750 R 0.810 R 0.830 R 0.940 R 1.030
1.100 R 1.200 R 1.240 R 1.240 R 1.340 R 1.380 R 1.390
1.420 R
Actual Mean - 1.059 Actual Standard Deviation = 0.291
Edited Mean ~ 0.470 Edited Standard Deviation = 0.000
Con~nent : Almost entirely fine light grey amorphous inorganic material; very little vitrinite present.
Sample Depth : 6600.0
0.530 0.600
0.950 R 0.990
0.670 r 0.670 R 0.720 r 0.720 R 0.740
Actual Mean - 0.732 Actual Standard Deviation ~ 0.150
Edited Mean = 0.565 Edited Standard Deviation = 0.049
Comnent : Almost enttrely fine light grey amorphous inorganic material; very ltttle vttrlnite present.
Sample Depth : 8280.0
0.260 C 0.260 C 0.270 C 0.310 C 0.320 C 0.330 C 0.330'
0.340 C 0.370 C 0.390 C 0.390 C 0.390 C 0.410 C 0.410
0.420 C 0.430 C 0.430 C 0.430 C 0.440 0.450 0.480
0.480 P 0.480 0.490 0.490 0.490 0.500 0.510
0.510 0.510 0.520 * 0.530 0.540 0.540 0.550
0.550 0.560 P 0.570 0.570 0.580 0.590 0.590
0.600 0.600 0.600 0.620 0.700 R 0.760 R 0.770
0.790 R
Actual Mean - 0.489
Edited Mean - 0.534
Actu'al Standard Deviation - 0.126
Edited Standard Deviation ~ 0.050
Comment :Ltttle vttrlntte present.
GMC Data Report 109 Page 7/25
San~ole Depth : 9090.0
O. 290 C O. 320 C O. 330 C O. 340 C O. 350
0.350 C 0.350 C 0.350 C 0.360 C 0.360
O. 380 C O. 380 C O. 380 C O. 390 C O. 390
0.410 C 0.410 C 0.410 C 0.420 C 0.420
0.430 C 0.440 0.450 0.450 0.450
O. 480 O. 490 O. 490 O. 490 O. 500
O. 560 O. 580 O. 590 O. 600 O. 660
1. 290 R
Actual Mean = 0,457 Actual Standard Deviation = 0.155
Edited Mean : 0.505 Edited Standard Deviation = 0.054
Cor~nent : Mostly small, occasionally large vitrinite particles present°
0.350
O. 360
0.400
0.420
0.450
0.540
0.660
0.350
0.360
0.410
0.430
0.480
0.550
0.740
Sample Depth : 9810.0
0.400 C 0.430 C 0.450 0.460 0.480
0.510 E 0.520 0.520 0.560 0.600
0.670 R 0.680 R 0.690 R 0.710 R 0.710
0.720 R 0.720 R 0.730 R 0.760 R 0.770
0.790 R 0.810 R 0.830 R 0.830 R 0.830
0.850 R 0.880 R 0.880 R 0.890 R 0.900
1.010 R 1.020 R 1.040 R 1.050 R 1.059
1.400 R
Actual Mean = 0.766 Actual Standard Deviation = 0.215
Edited Mean -- 0,530 Edited Standard Deviation : 0.062
Conrnent : Mostly small particles present.
0.500
0.630
0.710
0.770
0.830
0.910
1.130
0.500
0,630
0.710
0,790
0.840
0.930
1.240
Sample Depth : 10560.0
0.390 C - 0.410 C 0.420 C 0.430
0.440 0.440 0.450 0.450
,
0.460' 0,460 0.470 0.480
0.500 0.500 0.500 0.500
0.510 0.520 0.520 0.520
0.560 0.560 0.570 0.580
0.670 R 0.670 R 0.710 R 0.730
0.880 R
C 0.430 C
0.460
0.480
0.500
0.530
0.610
R 0.770 R
Actual Mean = 0.538 Actual Standard Deviation = 0.116
Edited Mean = 0.501 Edited Standard Deviation = 0.044
·
Conment : Occasionally large, mostly small vttrlntte particles present.
O. 430
O. 460
0.480
0.510
0.540
0.650
0.780
0.440
0.460
0.490
0.510
0.560
0.650
0.870
GMC Data Report 109 Page 8/25
Sample Depth : 11160.0
0.370 C 0.380 C 0.390 £ 0.410 C
0.440 0.440 0.450 0.470
0.510 0.520 0.520 0.520
0.560 0.560 0.590 0.590
0.710 R 0.730 R 0.800 R 0.810 R
0.410
0.480
0.530
0.590
0.820
0.430
0.500
0.530
0.600
0.840
0.440
0.510
0.550
0.620
0.850
Actual Mean = 0.556 Actual Standard Deviation = 0.139
Edited Mean = 0.524 Edited Standard Deviation = 0.055
Comnent : Little vttrtntte present.
Sample Depth : 11880.0
O. 320 C O. 380 C
O. 440 P O. 440
O. 510 O. 520
0.540 0.540
O. 680 O. 720 R
0.810 R 0.810 R
0.950 R 1.040 R
0.400 C 0.400 C
0.480 0.490
0.520 0.520
0.570 0.580
0.720 R -0~740 'R
0.830 R 0.840 R
1.120 R
0.420
0.490
0.530
0.580
0.760
0.840
0.420
0.500
0.530
0.580
0.780
0.880
0.430
0.500
0.530
0.590
0.800.
0.880
Actual Mean = 0.621 Actual Standard Deviation = 0.190
Edited Mean = 0.530 Edited Standard Deviation : 0.053
Conment : Little vttrintte present.
Sample Depth : 12510.0
0.400 C 0.410 C 0.440 0.440
0.490 0.490 0.490 0.500
0.520 0.520 0.520 0,530
0.550 0.550 0.560 0.570
0.590 0.600 0.600 0.620
0.640 0.750 R 0.810 R 0.810
0.870 R 0.890 R 0.900 R 0.930
1.210 R
0.460
0.500
0.540
0.570
0.620
R 0.83O
R 0.980
0.470
0.500
0.540
0.580
0.620
0.840
1.190
O. 480
0.510
0.55O
0.580
0.630
0.840
1.210
Actual Mean - 0.645 Actual Standard Deviation - 0.206
Edtted Mean - 0.540 Edited Standard Deviation - 0.056
Comment : Little vttrtntte present.
GMC Data Report 109 Page 9/25
Sample Depth : 13350.0
0.420 C 0.600 0.620 0.620 0.630 P 0.630
0.640 0.650 0.660 0.660 0.660 0.660
0.680 0.680 0.690 0.700 0.700 0.710
0.720 0.720 0.720 0.720 0.730 0.730
0.740 P 0.750 0.750 0.760 0.760 0.760
0.770 0.780 0.780 P 0.790 0.790 0.800
0.820 0.830 0.830 P 0.830 0.830 0.840
0.880
Actual Mean = 0.725 Actual Standard Deviation = 0.084
Edited Mean = 0.731 Edited Standard Deviation : 0.072
Comment : Common pyrite; abundant degraded amorphous material; little vitrinite present.
0.630
0.660
0.720
0.740
0.760
0.810
0.870
Sample Depth : 13816.0
0.580 C 0.600 0.640 0.660 0.690 0.700
0.710 0.720 0.720 0.720 0.730 0.730
0.730 0.740 0.750 0.760 0.770 0.770
0.770 0.790 0.790 0.790 0.790 0.790
0.820 0.820 0.830 0.830 0.840 0.840
0.880 0.890 0.920 0.930 0.940 0.940
0.960 .000 R R 1. 59
i.260 n
Actual Mean = 0.831 Actual Standard Deviation = 0.151
Edited Mean = 0.798 Edited Standard Deviation : 0.097
Comment : Common pyrite; abundant degraded amorphous material; little vitrtnite present.
0.710
0.730
0.770
0.790
0.860
0.950
1.210
GMC Data Report 109 Page 10/25
BUJAK DAVIES GROUP' VITRINITE
SAMPLE ' 900f
MALASPINA#~A
Population Meon
In Si~u
Caved
Reworked
Tots!
Tota! meaeuremen~e thte eemple : 50
Stmndmrd Devtmtton
0.24
0.24
.3 .4 .5 .6 .8 1
I I I r , I I
.3 .4 .5 .6
.0 t
Ceved
Zn $ttu
t.5
!
Reworked
BUJAK DAVIES GROUP · VlTRINITE MALASPINA#1A
SAMPLE · '1920f
Population Mean
In S~tu
Caved
Reworked
Total
Standapd Deviation
~ . 25 0.40
~ . 25 0.40
Total memeupemante thio ammple : DO
.3 .4 .5 .6 .8 t 1.5 2 3 4
, .I ., I . I I I. I I I , ·
.....
.3 .4 .5 .6 .8 :~ t.5 2 3 4
Csved In Sttu Re~orkecl
GMC Data Report 109 Page 12/25
, .
MALASpINA# ~A
BUJAK DAVIES GROUP ' VITRINITE
SAMPLE ' 3090f
Po~u]ation Mean
In Situ 0.48 0.06
Caved 0.29 --
Reworked 1.t5 0.35
Total 0.92 0.43
Tote] meaeuremente thie eemple : 42
.3 .4 .5 .6 .8 I 1.5 2 3 4
I I I I I I I I
' I
.
.3 .4 .§ .6 .8 t t.§ 2 3 4
Caved In 8itu Rewor, l<ed
e~r n.,. o~.,,, ina Page 13/25
BUdAK DAVIES GROUP ' VITRINITE
HALASPINA#~A
SAMPLE ' 4200f
Population Memn
In Sttu -
Ceved --
Reworked o.gg
Total O.gg
Torsi meeeuPsments this
Stenderd Devtstion
0.26
.3 o4 .5 .6 .8 ! 1.5 2 3 4
_ i I I I ! .1 I I
',. ,
' ' '! ~' '~ ~ I I ~
.3 .4 o~ .E .8 I ~.5 2 3 4
Caved :In Sttu Rev,~ooi<ed
, ,, ,,
AMC. O~t~ Rmnnrt lOc] Paqe 14/25
BUJAK DAVIES GROUP° VITRINITE MALASPINA#1A
SAMPLE · 5490f
PopuIot~on Mean
Standard Dev&ation
In Sttu 0.47 --
Caved -- --
Reworked 2.t0 0.28
Total 1.08 0.2g
Caved
.3 .4 .5 .6
I I I '
.4 .5 .IS
In 8itu
t.5
2 3 4
I I I
· ~.5 2
Rawor-I<ed
GMC Data ReBort 109 Paqe 15/25
BUJAK DAVIES GROUP · VITRINITE
SAMPLE ' 6600f
MALASPINA#~A
Populmtion Memn
Stendapd Deviation
In Situ 0.56 0.05
Caved - --
Rewopked 0.78 0.13
Total 0.73 0.~§
Total meaau'pemente thia emmple : 9
.3 .4 .5 .6 .8 t .5 2 3 4
I I I I i I I i
'' ~ ' !4 ! ~ ~ " t ~ i "'
.3 . .~ .ii .8 - I ~,.§ 2 3 4
Caved In 8ttu Rewop~ed
GMC Data Report 109 Page 16/25
MALASPINA#~A
BUJAK DAVIES GROUP ' VITRINITE
SAMPLE ' 8280f
PopuIet~on Mean
Standard Oev~etion
In Sttu 0.53 0.05
Caved 0.36 0.08
Reworked 0.78 0.04
Tote! O.4~ O.~3
Tote1 m~m~urement~ thi~ aampl~ : ~O
.3 .4 .§ .6 .8 t t.5 2 3 4
, , I I I I I I I I
.
.
' i I l:· I I '
ii
.3 .4 .~ ., .e , ,.~ z 3 4
Caved :rn 8ttu Rewo~,l<ed
,
~Mr n~t',,1 ~,nnv,'l' lflq Paae ]7/25
BUJAK DAVIES GROUP · VITRINITE
SAMPLE · 9090f
HALASPINA#~A
Standard Deviation
In Situ 0.51 0.05
Caved 0.38 0.04
Reworked 0.84 0.30
Total 0.46 0.C5
Total memaupemente this sample
.3 .4 .5 .6 .8 ! .5 2 3 4
I I I I I I I
~ ~ ~ ~ ~ 'i ~ i '
.3 .4 .5 .6 .8 t 1.§ 2 3 4
', r
Caved ..' In Sttu Rewopl<ed
.,
GMC Data Report 109 Page 18/25
BUJAK DAVIES GROUP · VITRINITE
MALASPINA#~A
SAMPLE · 98]0f
Population MeSh
Stsndepd Deviation
In Situ 0.53 0.06
Caved 0.42 0.02
Reworked 0.86 0.t7
Total 0.77 0.21
.3 .4 .5 .6 .8 t ~.5 2 3 4
., . I I I I I I I .!
·
!
.3 .4 .5 .6 .8 I S.5 :)3 4
:
- ,
Caved In Situ RewoPked
, ,
GMC Data Report 109 Page 19/25
BUJAK DAVIES GROUP ' VITRINITE
HALASPINA#~A
SAMPLE ' :tO560f
Popu~mtSon Henn
Stmndmrd D~v&mt~on
In Situ 0.50 O.O4
Cmvmd 0.42 0.02
Reworked 0.74 O.Og
Total 0.54 0.~2
TotmZ meaaurementa th/~ aampZe : 50
.3 .4 .5 .6 .8 ! ,5 2 3 4
I I I I I ., I ! . 1
I I i I i I I
.3 .4 .~ .6 .8 t t.5 2 3 4
Ceved In S~tu Reworked
.
GMC Data Report 109 Page 20/25
BUJAK DAVIES GROUP ' VITRINITE
MALASPINA#~A
SAMPLE ' ~.~.60f
~tmndm~d Oevimt&on
In Situ 0.52 0.08
Ceved 0.40 0.02
Reworked 0.79 0.05
Totel 0.58 0.t4
.3 .4 .5 .6 .8 ! 1.5 2 3 4
I I I ! I I ! I
,
3 .4 .5 .6 .6 .]. f..5 2 - . 4
.
Caved 'rn Sttu Rewor"~ed ·
r
GMC Data Report 109 Page 21/25
BUJAK DAVIES GROUP ' VITRINITE MALASPINA#JA
SAMPLE ' 11880f
Population Nean
StandePd Devtet&on
· n Sttu 0.53 0.05
Caved 0.40 0.04
Rewopked 0.84 0.11
Tote! 0.82 0.19
Total meaeupementa thia aamp3e : 45
.3 .4 .5 .6 .8 ! t,5 2 3 4
., I.. I I ... I I ., . I I I
·
· 3 .4 .~ .8 .8 I t.5 2 3 4
Cmved ]:n Sttu
GMC Data Report 109 Page 22/25
BUJAK DAVIES GROUP ' VITRINITE MALASPINA#~A
SAMPLE ' ~2510f
PoDuZ~on Mean
Zn Sttu 0.54 0.08
Caved 0.40 0.00
Reworked 0.93 0.i8
Torsi 0.84 0.21
Totei meaeuremente thte eampie : 50
.3 .4 .5 .6
I I I
.8 t
2 3 4
I I I
Caved
.4 .5 .6 o8 1
In 8itu
i
Re~or, l<ed
GMC Data Report 109 Page 23/25
BUJAK DAVZES GROUP ' VTTRINTTE
SAMPLE ' :13350f
NALASPINA#~A
Population Mean
Zn S&tu 0.73 0.07
Caved 0.42 --
RewopKad - --
Total 0.72 0.08
Total meaeupamente t~te oampZe : 50
.3 ,4 .§ .6
I I
Caved
.8
,,
.8 I
In Sttu
t.5
1.5 2
RewoPl<ad
GMC Data Report 109 Page 24/25
BUJAK DAVIES GROUP ' VITRINITE
SAMPLE ' 13B~6f
MALASPINA#1A
Population Mean
Standard Deviation
In Situ 0.80 O. 10
Caved 0.58 --
Reworked 1.17 0.06
Total 0.83 0.15
Total meaaurements this aample : 50
.3 .4 .fl .§ .8 I .5 2 3 4
I I I I I Il · I ! I
l_
.3 .4 . .6 .6 t t.~ 2 3 4
Caved In Sttu Reworked
..
GMC Data Renort 109 Paae 25/25
