Sample: 85ARa-23
| Sample ID: | 85ARa-23 [1] |
| Station ID: | 85ARa-23 |
| AT Num: | |
| Volcano: | |
| Possible source: | |
| Eruption: | |
| Collector: | Ratte, J. C. |
| Date sampled: | 1985-00-00 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | |
| Text Description: | Wrangell Lava. Rocker Creek volcanic and volcaniclastic rocks. Rocker Creek volcanic and volcaniclastic rocks, undifferentiated (Tertiary) - Chiefly dark basalt to andesite lava flows (47.5 - 60.4% SiO2; map nos. 34 and 33) and minor interlayered mudflows and maroon to dark-green volcanic siltstone, sandstone, and pebble conglomerate. Unit has been structurally deformed; bedding dips 20 degrees to the southwest. A whole-rock K-Ar age of 26 Ma (map letter D) was obtained on a basalt lava flow. |
| Sample Location: |
References Cited
[1] Geologic map of the McCarthy D-1 Quadrangle, Alaska, 2000
Richter, D. H., Ratte, J. C., Leeman, W. P., and Menzies, Martin, 2000, Geologic map of the McCarthy D-1 Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 2695, unpaged, 1 sheet, scale 1:63,360.
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