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Sample 11920-2
NavDat sample number 4993 · ANDESITE
Sample
| Sample ID | 11920-2 |
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| Rock name | ANDESITE |
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| Rock type | VOLCANIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
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| Collected by | M.L. Silberman and F.J. Kleinhampl, U.S. Geological Survey |
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| Comment | Equivalent to intermediate lavas, rocks of Mt. Ferguson Ekren and others, 1977. |
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Location
| Latitude | 38.5367 |
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| Longitude | -117.963 |
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| Location | Mineral County |
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| State / province | Nevada |
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| Location comment | 4 km NW of windmill in Stewart Valley |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 15.4 |
|
14.9 |
15.9 |
|
M.L. Silberman, U.S. Geological Survey |
Analyses
No chemical analyses are stored for this sample.
References
- Morton, Janet L. and Silberman, Miles L. of the U.S. Geological Survey, Menlo Park; Bonham, H.F. and Garside, Larry J. of the Nevada Bureau of Mines and Geology, Reno; and Noble, Donald C. of the Michigan Technological University, Houghton (1977) K-AR AGES OF VOLCANIC ROCKS, PLUTONIC ROCKS, AND ORE DEPOSITS IN NEVADA AND EASTERN CALIFORNIA - DETERMINATIONS RUN UNDER THE USGS-NBMG COOPERATIVE PROGRAM.
