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Sample USGSD-M547-1
NavDat sample number 10026 · TONALITE
Sample
| Sample ID | USGSD-M547-1 |
|---|
| Rock name | TONALITE |
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| Rock type | PLUTONIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
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| Comment | medium to coarse grained homogeneous biotite hornblende tonalite; faint primary foliation; sphene and quartz are sparse |
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Location
| Latitude | 45.5939 |
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| Longitude | -112.9 |
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| Location | large loose block at 8200 ft elevation in felsenmeer at base of cliffs S of Trapper Cree; Beaverhead County |
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| State / province | Montana |
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| Volcanic field | Pioneer Batholith |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 71.9 |
|
67.6 |
76.2 |
|
|
Analyses
No chemical analyses are stored for this sample.
