File:820qtz.jpg

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820qtz.jpg (399 × 336 pixels, file size: 97 KB, MIME type: image/jpeg)

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Description
English: Sand-sized quartz grain (0.13 mm) from the USGS-NASA Langley core showing two well-developed, intersecting sets of shock lamellae produced by the late Eocene Chesapeake Bay bolide impact. This shocked quartz grain is from the upper part of the crater-fill deposits at a depth of 820.6 ft in the core. The corehole is located at the NASA Langley Research Center, Hampton, VA, near the southwestern margin of the Chesapeake Bay impact crater.
Date
Source http://geology.er.usgs.gov/eespteam/crater/shockquartz.html
Author Glen A. Izett

Licensing

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Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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current18:58, 19 December 2010Thumbnail for version as of 18:58, 19 December 2010399 × 336 (97 KB)Hike395 (talk | contribs){{Information |Description={{en|1=Sand-sized quartz grain (0.13 mm) from the USGS-NASA Langley core showing two well-developed, intersecting sets of shock lamellae produced by the late Eocene Chesapeake Bay bolide impact. This shocked quartz grain is from

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