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Sample S91-H213
NavDat sample number 37027 · BASALTIC-ANDESITE
Sample
| Sample ID | S91-H213 |
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| Rock name | BASALTIC-ANDESITE |
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| Rock type | VOLCANIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
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| Comment | quarry in lava flow erupted from youthful cinder cone Ashcoff Butte. Normal polarity. Olivine 2-3%, augite 1-2%, and seriate plagioclase phenocrysts in an intergranular groundmass of plagioclase, pyroxene, and opque minerals; olivine phenocrysts have tracese of wispy iddingsite |
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Location
| Latitude | 45.4155 |
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| Longitude | -121.985 |
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| State / province | Oregon |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 0.2 |
|
0.15 |
0.25 |
|
|
Analyses
No chemical analyses are stored for this sample.
