U.S. Geological Survey: Science for a Changing World - USGS visual identifier and link to main Web site at http://www.usgs.gov/

Photograph of polished block of L-tectonite from the Columbia pluton, Cowherd quarry, Fluvanna County, Va. (Stop 9). For a more detailed explanation, contact David Spears at david.spears@dmme.virginia.gov.
 
Figure 7. Photograph of polished block of L-tectonite from the Columbia pluton, Cowherd quarry, Fluvanna County, Va. (Stop 9).
U.S. Department of the Interior, U.S. Geological Survey
URL: https:// pubsdata.usgs.gov /pubs/circ/2004/1264/html/trip7/fig7.html
For more information, contact David Spears
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