GRD02OCS0
Calif 1005
Welded Ignimbrite
Cenozoic › Quaternary › Pleistocene › Calabrian
0.01
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1.8
2
Ritter 154 › Cabinet 3 › Drawer E
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Bishop Tuff. Dark brown fiamme mantled by black rims with rounded quartz crystals in pink groundmass. Quartz and garnet-rich xenolith.
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California
Bishop, Inyo county
Latitude: 37.467°
Longitude: -118.579°
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Slide 2: Anhedral, embayed quartz mantled by dark brown glass
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Slide 1: Anhedral, embayed quartz mantled by dark brown glass
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GRD02OCT0: Calif 1005 (1): Euhedral to subhedral plagioclase. Subhedral to anhedral fractured quartz. Fiamme is clear glass mantled by dark brown glass. Groundmass glass is brown. Trace opaques. Small sections of groundmass show beginning stages of devitrification. (C. Eichler)
GRD02OCT1: Calif 1005 (2): Euhedral to subhedral plagioclase. Subhedral to anhedral fractured quartz. More fiamme in the thin section. Fiamme is clear glass mantled by dark brown glass. Groundmass glass is brown. Trace opaques. Small sections of groundmass show beginning stages of devitrification. (C. Eichler)
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