Photomicrograph of rhyolite tuff, Kuskokwim region, Alaska, ca. 1943.
Dates
Date Taken
1943
Summary
Photomicrograph of rhyolite tuff, in hills south of Juninggulra Mountain, Fragments include quartz, plagioclase feldspar and biotite. Note flowage layers in matrix, which are draped around fragments, and bent and broken fragment of biotit. Plain light. Kuskokwim region, Alaska, ca. 1943. Published in U.S. Geological Survey Professional paper 268, Plate 17. 1955.
Summary
Photomicrograph of rhyolite tuff, in hills south of Juninggulra Mountain, Fragments include quartz, plagioclase feldspar and biotite. Note flowage layers in matrix, which are draped around fragments, and bent and broken fragment of biotit. Plain light.
Kuskokwim region, Alaska, ca. 1943.
Published in U.S. Geological Survey Professional paper 268, Plate 17. 1955.
Image located in the U.S.Geological Survey Photographic Collection, Cady, W.M. Collection album, volume 1, no.251.
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