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![]() Date: 2013-06-02 18:11:01Tephra Petrology Igneous rocks John Day Formation John Day Fossil Beds National Monument Yellowstone hotspot Tuff Ochoco Mountains Pyroclastic rock Geology Volcanic rocks Volcanology | Add to Reading List |
![]() | View full size U.S. Department of Justice: David Wixon of Longview, Wash., pleaded guilty Friday to digging up this oreodont skull at the John Day Fossil Beds National Monument. A Longview man was banned Friday from entDocID: 1uWFk - View Document |
![]() | Painted Hills Hiking TrailsDocID: 1qbBY - View Document |
![]() | Trails: Sheep Rock Unit The colorful landscapes of John Day Fossil Beds National Monument’s three units represent 40 million years of Oregon history. Evidence of volcanic activity, environmental changes, and ancient plDocID: 1pcQ8 - View Document |
![]() | New Prehistoric Rodent Species Discovered in Oregon’s John Day BasinDocID: 19mPp - View Document |
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