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![]() Date: 2012-10-25 23:26:08Plate tectonics Volcanic rocks Igneous rocks Columbia River Basalt Group Basalt Argon–argon dating Volcano Yellowstone hotspot Lava Geology Volcanology Large igneous provinces | Source URL: oro.open.ac.ukDownload Document from Source WebsiteFile Size: 654,33 KBShare Document on Facebook |