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A Geoscience Digital Image Library

110.jpg
TitleObsidian, Lake County, Oregon
DescriptionObsidian is volcanic glass. This specimen is typical for obsidian: jet black color with conchoidal fracture. A close look at thin edges reveals parallel flow bands. This sample is 9.5 cm across.
ChronostratigraphyTertiary (Miocene)
LithostratigraphyGlass Buttes Series
LocationUSA ▹ Oregon ▹ Lake
PhotographerTwyla Baker. 2001-02-20.
CollectionWard’s Collection of Classic North American Rocks #8.
Key wordsobsidian, Oregon
Tech details620 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number110
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