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Data Series 280

U.S. GEOLOGICAL SURVEY
Data Series 280

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Table 6. Bulk-rock analyses of selected trace element concentrations and strontium isotopic compositions (87Sr/86Sr) in outcrop samples collected in the early 1990s from the Nevada Test Site vicinity, Clark, Lincoln, and Nye Counties, Nevada, and Inyo County, California.

[Trace element (Rb, Sr, Zr, Ba, La, and Ce) concentrations were determined by X-ray fluorescence on whole-rock samples and are given in micrograms per gram (µg/g). Concentrations below minimum reporting limits are indicated as “0”. “ND” indicates that concentrations were not determined. All strontium isotopic compositions (87Sr/86Sr) were determined on dilute hydrochloric acid leachates of powdered rock samples with the exception of two samples (map numbers 4 and 5 marked with asterisks) which were determined on whole-rock digestions. 87Sr/86Sr uncertainties are typically, but not always, dominated by external error associated with reproducibility of the EN–1 standard (±0.00005). Strontium isotopic compositions are also given in delta notation (δ87Srt) = [(87Sr/86Srsample/87Sr/86Srpsw)-1]×1,000, where 87Sr/86Srmsw is the value for modern seawater and 87Sr/86Srpsw is the value for paleoseawater at the time of deposition. δ87Srt values for rocks underlying the Wood Canyon Formation were not calculated (NC) because of the very large uncertainties in assigning ages and initial seawater 87Sr/86Sr values, which are designated as “undefined” Abbreviations and symbols: Rb, rubidium; Sr, strontium; Zr, zirconium; La, lanthanum; Ce, cerium; ‰, per mil]

Map No. Sample No. Rock type Rb Sr Zr Ba La Ce 87Sr/86Sr ±2σ δ87Sr ‰ ±2σ Unit δ87Srt Seawater 87Sr/86Srpsw used
1 HD-1106 Calcitic marble 14 1,424 54 0 8 ND 0.70748 0.00005 -2.43 0.07 Yb NC Undefined
2 HD-1111 Marble 7 1,453 40 191 0 4 .70727 .00005 -2.72 .07 Yc NC Undefined
3 HD-1112 Marble 3.3 1,614 55 187 6 13 .70735 .00005 -2.61 .07 Yc NC Undefined
4 HD-1107 Dolomite 4 1,660 47 46 0 0 .70720* .00005 -2.82 .07 Yb NC Undefined
5 HD-1114 Marble 0 2,537 78 11 5 10 .70940* .00005 .28 .07 Yc NC Undefined
6 HD-1105 Dolomite 5 75 31 126 33 60 .71343 .00005 5.97 .07 Zs-c NC Undefined
7 HD-1151 Limestone 8 1164 59 25 13 7 .70945 .00005 .35 .07 CZw 1.48 0.7084
8 3C-1 Carbonate 2.5 221 10 30 18 13 .71106 .00005 2.62 .07 Cb 2.76 .7091
9 HD-212 Dolomite 0 146 1 ND ND ND .71181 .00005 3.68 .07 Cb-b 3.68 .7092
10 HD-214 Dolomite 0 211 0 ND ND ND .71279 .00008 5.06 .11 Cb-b 5.06 .7092
11 HD-216 Dolomite 0 256 0 ND ND ND .71125 .00005 2.89 .07 Cb-b 2.89 .7092
12 HD-218 Dolomite 2 152 2 ND ND ND .71201 .00007 3.96 .10 Cb-b 3.96 .7092
13 HD-219 Dolomite 6.8 176 14 ND ND ND .71162 .00005 3.41 .07 Cb-b 3.41 .7092
14 HD-220 Dolomite 1 86 5 ND ND ND .71120 .00005 2.82 .07 Cb-b 2.82 .7092
15 HD-221 Dolomite 0 268 0 ND ND ND .71070 .00005 2.12 .07 Cb-b 2.12 .7092
16 HD-1154 Limestone 24 261 124 180 14 30 .72543 .00005 22.89 .07 CZw-u 24.0 .7084
17 HD-1155 Limestone 7 445 93 47 19 49 .71958 .00005 14.64 .07 CZw 15.8 .7084
18 HD-538 Marble .6 245 4 45 8 7 .70921 .00005 .01 .07 Cb-p .30 .7090
19 HD-539 Dolomite .6 28 0 34 20 16 .70999 .00005 1.11 .07 Cb-p 1.39 .7090
20 HD-540 Dolomite .6 23 0 31 8 12 .70922 .00005 .03 .07 Cb-p .31 .7090
21 HD-541 Calcitic marble 2.8 636 27 149 15 37 .72141 .00005 17.21 .07 CZw-u 18.4 .7084
22 HD-513 Dolomite 2.4 96 16 37 28 2 .70946 .00005 .37 .07 Oes 1.35 .7085
23 HD-515 Dolomite 1.3 58 1 42 8 2 .70875 .00005 - .64 .07 Oes .35 .7085
24 HD-516A Dolomite 2.4 71 9 42 28 2 .70981 .00008 .86 .11 Sr 1.42 .7088
25 HD-517 Limestone 16 311 36 88 22 16 .71319 .00005 5.63 .07 Sr 6.19 .7088
26 HD-518 Dolomite 7.9 63 31 113 8 12 .71105 .00005 2.61 .07 Sr 3.17 .7088
27 HD-519 Dolomite 1.9 64 0 45 8 10 .70882 .00008 - .54 .11 DSlm .03 .7088
28 HD-520 Dolomite .6 55 2 36 11 7 .70861 .00005 - .83 .07 DSlm .01 .7086
29 HD-533 Limestone .6 300 11 102 8 2 .71175 .00005 3.6 .07 Op-av 4.02 .7089
30 HD-534 Limestone 4.8 298 6 52 8 9 .71101 .00006 2.55 .08 Op-g 2.69 .7091
31 HD-535 Dolomite .6 39 0 32 28 2 .70877 .00006 - .61 .08 Cn-s - .47 .7091
32 HD-1415 Carbonate 0 113 4 0 7 3 .71648 .00005 10.27 .07 Cb-p 10.6 .7090
33 HD-1416 Carbonate 0 177 5 0 13 0 .71323 .00005 5.68 .07 Cb-p 5.97 .7090
34 HD-1417 Carbonate 0 979 47 34 12 38 .71829 .00005 12.82 .07 CZw-l 14.0 .7084
35 HD-1418 Carbonate 0 151 2 0 0 0 .72260 .00005 18.9 .07 CZw-l 20.0 .7084
36 HD-1419 Carbonate 0 166 4 2 15 11 .72327 .00005 19.84 .07 Cb-p 20.1 .709
37 HD-1420 Carbonate 0 66 1 0 6 0 .71905 .00005 13.89 .07 Cb-p 14.2 .709
38 HD-1421 Carbonate 2.8 627 28 47 13 31 .71374 .00005 6.40 .07 CZw-l 7.54 .7084
39 HD-527 Dolomite .6 47 0 25 18 10 .70816 .00007 -1.47 .10 Df .37 .7079
40 HD-528 Dolomite 1.1 60 0 39 8 11 .71152 .00005 3.27 .07 Df 5.11 .7079
41 HD-529 Calcitic marble 3 166 0 41 8 2 .71017 .00005 1.36 .07 Cb-b 1.36 .7092
42 HD-530 Dolomitic marble .6 27 0 33 16 2 .70927 .00005 .10 .07 Cb-b .10 .7092
43 HD-531 Calcitic marble 4.2 403 13 50 8 2 0.70960 0.00005 0.56 0.07 Cn-h 0.56 0.7092
44 HD-542 Dolomitic marble 4.5 371 8 39 20 28 .71010 .00005 1.27 .07 CZw-l 2.40 .7084
45 HD-543 Dolomite .6 200 2 39 16 21 .71551 .00005 8.90 .07 Cb-p 9.19 .7090
46 HD-1152b Alteredlimestone 4 98 16 11 5 9 .71150 .00005 3.24 .07 Zs-d NC Undefined
47 HD-1153 Limestone 3 306 12 13 14 25 .71125 .00005 2.89 .07 Zs-d NC Undefined
48 HD-1142 Limestone 6 390 18 29 0 0 .70876 .00005 - .62 .07 Op-g - .20 .7089
49 HD-1144 Limestone 2 35 14 58 14 0 .70935 .00005 .21 .07 Df 2.04 .7079
50 HD-1400 Carbonate 0 56 0 0 12 8 .71265 .00005 4.87 .07 Cb-b 4.87 .7092
51 HD-1401 Carbonate 1.4 70 3 0 15 10 .71289 .00005 5.20 .07 Cb-b 5.2 .7092
52 HD-1402 Carbonate 0 67 1 0 13 0 .71173 .00005 3.57 .07 Cb-b 3.57 .7092
53 HD-641 Carbonate 0 62 7 0 20 25 .71703 .00008 11.04 .11 Cb-b 11.0 .7092
54 HD-537 Dolomite 9.1 115 29 61 36 66 .71275 .00005 5.01 .07 Zs-d NC Undefined
55 HD-1146 Limestone 0 283 8 147 4 0 .71292 .00005 5.25 .07 MDe 6.95 .7080
56 HD-1147a Limestone 14 197 20 140 8 12 .70926 .00005 .09 .07 Dtc .66 .7088
57 HD-1147b Limestone 2 120 5 23 6 7 .71088 .00005 2.37 .07 Dtc 2.93 .7088
58 HD-522 Dolomite 1.3 63 0 101 29 27 .70976 .00008 .79 .11 Dtc 1.35 .7088
59 HD-523 Limestone 6.7 172 7 141 8 13 .71029 .00005 1.53 .07 Dtc 2.10 .7088
60 HD-526 Limestone 2.5 668 20 55 13 6 .71018 .00007 1.38 .10 Cc-m 2.37 .7085
61 HD-1138 Limestone 9 777 40 37 12 0 .70884 .00005 -.51 .07 Op-av -.09 .7089
62 HD-1139 Dolomite/limestone 2 65 20 0 16 0 .70935 .00005 .22 .07 DSlm .78 .7088
63 HD-1141 Limestone 10 1,140 54 57 14 0 .70906 .00005 - .2 .07 Op-av .22 .7089
64 HD-1150b Carbonate 7 507 25 38 7 22 .71722 .00005 11.31 .07 CZw 12.5 .7084
65 HD-546 Dolomite .6 45 0 36 25 24 .70886 .00006 - .48 .08 Dsi 1.36 .7079
66 HD-548 Limestone 8.5 382 8 42 17 18 .70921 .00007 .01 .10 Op-av .44 .7089
67 HD-549 Limestone 10.6 315 10 82 8 11 .70979 .00005 .83 .07 Op-g .97 .7091
68 HD-550 Limestone 3.7 297 7 45 23 13 .70921 .00005 .01 .07 Op-g .16 .7091
69 HD-551A Dolomite .6 47 1 30 19 19 .70929 .00005 .13 .07 Op-g .27 .7091
70 HD-553 Limestone 4.2 631 22 48 12 2 .71013 .00005 1.31 .07 Cn-h 1.31 .7092
71 HD-554 Limestone .6 496 9 42 8 8 .70937 .00005 .24 .07 Cb-b .24 .7092
72 HD-555 Limestone 2.1 348 10 44 16 16 .70936 .00005 .23 .07 Cb-b .23 .7092
73 HD-556 Limestone 3.2 362 9 50 8 7 .70938 .00005 .25 .07 Cb-b .25 .7092
74 HD-557 Limestone 1.9 207 3 36 15 2 .70912 .00005 - .11 .07 Cb-p .03 .7091
75 HD-558 Limestone 5.2 442 5 32 8 2 .70918 .00007 - .03 .10 Cb-p .11 .7091
76 HD-1422-1 Carbonate 30.2 528 74 118 11 14 .71255 .00005 4.72 .07 Cb-b 4.72 .7092
77 HD-1422-2 Carbonate 3 247 14 17 4 17 .71103 .00005 2.58 .07 Cb-b 2.58 .7092
78 HD-1423 Carbonate 19.6 204 51 82 16 0 .71003 .00005 1.17 .07 Cb-b 1.17 .7092
79 HD-1426 Carbonate 1.4 145 18 8 19 38 .71243 .00005 4.56 .07 CZw 5.55 .7085
80 HD-1427 Carbonate 3.8 334 20 10 0 0 .70937 .00005 .24 .07 Cb-b .24 .7092
81 HD-1428 Carbonate 0 175 5 0 6 5 .70899 .00005 - .30 .07 Cb-b - .16 .7091
82 HD-1429 Carbonate 3.3 292 14 10 9 4 .70911 .00005 - .13 .07 Cb-b .01 .7091
83 HD-1432 Carbonate 1.9 555 21 9 12 11 .70931 .00005 .16 .07 Cn .30 .7091
84 HD-1434 Carbonate 0 51 0 0 17 8 0.70804 0.00005 -1.64 0.07 Dsv 0.06 0.7080
85 HD-1435 Marble 1 501 21 13 7 14 .71282 .00005 5.10 .07 Cc 6.09 .7085
86 HD-1436 Carbonate 2 140 6 0 12 24 .70922 .00005 .03 .07 Cb-b .03 .7092
87 HD-110-1 Limestone 5 312 20 ND ND ND .70990 .00005 .99 .07 Cb-b .99 .7092
88 HD-471B Carbonate 10.7 345 36 107 21 15 .70980 .00009 .85 .13 Cb-b .85 .7092
89 GDR-8 Carbonate 2 275 5 ND ND ND .70913 .00005 - .10 .07 PMb 1.17 .7083
90 HD-229 Limestone 0 743 9 ND ND ND .70831 .00005 -1.26 .07 PMbl .01 .7083
91 HD-230 Limestone 0 132 0 ND ND ND .70827 .00005 -1.31 .07 PMbl - .04 .7083
92 HD-231 Limestone 2 564 2 ND ND ND .70844 .00005 -1.07 .07 Mm .34 .7082
93 HD-232 Limestone 0 25 0 ND ND ND .70857 .00005 - .89 .07 Cb-b - .75 .7091
94 HD-233 Limestone 0 28 0 ND ND ND .70933 .00008 .18 .11 Cb-b .18 .7092
95 HD-235 Limestone 0 29 0 ND ND ND .70847 .00007 -1.03 .10 Cn - .75 .7090
96 HD-236 Limestone 0 66 6 ND ND ND .70859 .00007 - .86 .10 Op - .01 .7086
97 HD-238 Limestone 8 263 82 ND ND ND .70790 .00005 -1.83 .07 PMb .00 .7079
98 HD-1000 Limestone 1 104 6 14 9 0 .70834 .00005 -1.21 .07 Dg .06 .7083
99 HD-999 Dolomite 3 29 13 32 18 0 .70881 .00005 - .55 .07 Cn-s - .27 .7090
100 HD-995 Dolomite 0 67 4 22 15 9 .70845 .00005 -1.06 .07 Oes .21 .7083
101 HD-996 Dolomite 2 327 14 25 18 13 .70912 .00005 - .12 .07 Op-av .17 .7090
102 HD-997 Dolomite 0 422 15 19 7 0 .70884 .00005 - .51 .07 Oes .76 .7083
103 HD-998 Limestone 3 345 11 43 0 0 .70880 .00005 - .56 .07 Op-av .01 .7088
104 HD-1001 Dolomite 1 233 9 29 5 0 .70912 .00005 - .12 .07 Op-av .17 .7090
105 HD-1006 Limestone 1 16 42 10 14 0 .70918 .00005 - .02 .07 Op-av .12 .7091
106 HD-990 Limestone 2 56 6 13 8 0 .70841 .00005 -1.11 .07 Op-av - .12 .7085
107 HD-1002 Dolomite 1 44 5 11 14 0 .70853 .00005 - .95 .07 Oes .32 .7083
108 HD-991 Dolomite 1 63 2 5 8 13 .70813 .00005 -1.51 .07 Oes .04 .7081
109 HD-993 Dolomite 0 22 0 30 9 14 .70862 .00005 - .82 .07 Dsi 1.01 .7079
110 HD-994 Limestone 0 470 15 42 13 0 .70817 .00005 -1.45 .07 Mj .10 .7081
111 HD-1004 Limestone 4 204 85 38 17 10 .70884 .00005 - .50 .07 Op-av - .08 .7089
112 HD-1003 Limestone 4 164 13 20 0 0 .70826 .00005 -1.32 .07 Dg - .05 .7083
113 HD-1007 Limestone 2 258 22 19 13 18 .70994 .00005 1.04 .07 Op-g 1.18 .7091
114 HD-1008 Dolomite 9 59 32 29 0 0 .70915 .00005 - .07 .07 Dsv .49 .7088

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