GRD0001S0
I-1
Obsidian
Cenozoic › Quaternary › Pleistocene › Calabrian
0.01
-
1.8
2
Ritter 154 › Cabinet 15 › Drawer M
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Black, conchoidal fracture. Grey band.
Age from Doell et all 1996, Journal of Geophysical Research
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California
SE Sierra Nevada
Latitude: 36.7°
Longitude: 118.5°
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-
scan
crossed
GRD0001T0: Aphyric (C. Eichler)
GRD0001T1: Aphyric volcanic glass (C. Eichler)
N/A
N/A