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Sample WC70-4
NavDat sample number 48659 · MONZONITE
Sample
| Sample ID | WC70-4 |
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| Rock name | MONZONITE |
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| Rock type | PLUTONIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | biotite hornblende quartz monzonite porphyry |
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Location
| Latitude | 47.1806 |
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| Longitude | -112.162 |
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| Location | exposed in upper part of a steep ravine on E side of prominent ridge The Reef about 2.7 km N of Deadman Coulee Road |
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| State / province | Montana |
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| Volcanic field | sill intruding western facies of Two Medicine Formation and cut by thrust fault |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 60.7 |
|
60.3 |
61.1 |
|
|
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
