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Sample HSP-64
NavDat sample number 29332 · BASALT
Sample
| Sample ID | HSP-64 |
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| Rock name | BASALT |
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| Rock type | VOLCANIC |
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| Composition | MAFIC |
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| Material | IGNEOUS |
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| Comment | alkali olivine basalt; erupted from small shield volcano 1.5 km south of cinder cone which sourced the other Smith Praire units; porphyritic with phenos of plag and olivine in intersertal to intergranular groundmass of plag, olivine, pyroxene, sanidine, glass and opaques; given location is for the vent |
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Location
| Latitude | 43.509 |
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| Longitude | -115.505 |
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| Location | Western Snake River Plain |
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| State / province | Idaho |
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| Volcanic field | Boise River Group 2, Smith Praire basalt, unit 3 |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 0.2 |
|
0.05 |
0.35 |
|
|
