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Sample HG-7
NavDat sample number 31303 · BASALT
Sample
| Sample ID | HG-7 |
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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 | Aphyric basalt with a few microphenocrysts of olivine, plagioclase and minor augite in an intergranular groundmass composed of plagioclase, olivine, clinopyroxene and Fe-Ti oxides. Olivine is partially altered to iddingsite. |
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Location
| Latitude | 44.452 |
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| Longitude | -120.618 |
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| State / province | Oregon |
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| Formation | Clarno Formation |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 45.6 |
|
37.4 |
53.8 |
|
|
