Free Images: "bestof:Thousands of boxes of rock core samples are stored like books on a shelf at the USGS Core Research Center. geology.cr.usgs.gov/crc/ Photographer: Joshua Hicks,"
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KomatiiteA2.jpg
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"Steamboat_Rock,_a_landmark_in_Grand_Coulee,_near_the_Grand_Coulee_Dam_inlet_to_Grand_Coulee_proper."_-_NARA_-_294038.jpg
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