English: Photograph from the U.S. Department of Interior, Geological Survey. DOI states: "Information presented on this website is considered public information and may be distributed or copied."
2006-03-28 20:13 Willpeavy 298×213× (21240 bytes) Photograph from the U.S. Department of Interior, Geological Survey. DOI states: "Information presented on this website is considered public information and may be distributed or copied." Source: http://pubs.usgs.gov/circ/c1143/html/fig5a.jpg
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{{Information |Description={{en|Photograph from the U.S. Department of Interior, Geological Survey. DOI states: "Information presented on this website is considered public information and may be distributed or copied." Source: http://pubs.usgs.gov/circ/c