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Sample WC91-14b
NavDat sample number 48644 · PYROCLASTIC-FLOW
Sample
| Sample ID | WC91-14b |
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| Rock name | PYROCLASTIC-FLOW |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | devitrified; contains abundant pumice and small lithic fragments |
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Location
| Latitude | 46.9943 |
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| Longitude | -112.073 |
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| Location | exposed in Burlington Northern ballast quarry along U.S. 287, approximately 1 mile south of Wolf Creek |
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| State / province | Montana |
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| Volcanic field | Two Medicine Formation, Western Volcanic Member, Unit C |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 82.4 |
|
81.7 |
83.1 |
|
|
Analyses
No chemical analyses are stored for this sample.
References
- Harlan, Stephen S; Snee, Lawrence W; Reynolds, Mitchell W; Mehnert,Harald H; Schmidt, R G; Sheriff, Steve D; Irving, Anthony J (2005) U. S. Geological Survey Professional Paper, Report: P 1696, 29 pp.,2005
