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Sample CH83-4A
NavDat sample number 11432 · BASALT
Sample
| Sample ID | CH83-4A |
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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 | fine-grained matrix of ophitic/subophitic to intergranular plagioclase, Ti-rich augite, olivine, oxide, and interstitial oxide-rich mesostasis; porphyritic and glomeroporphyritic plagioclase phenocrysts and poikilitic olivine and oxide microphenocrysts |
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Location
| Latitude | 41.5134 |
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| Longitude | -118.644 |
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| Location | top flow overlying volcanic breccia at The Mesa, western margin Black Rock Desert; Humboldt County |
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| State / province | Nevada |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 16.6 |
|
15.7 |
17.5 |
|
|
