columbia river basalt

  • The Columbia River - Columbia River Basalt Group (CRBG)

    "The Columbia River Basalt Group (CRBG) is the principal rock unit in the gorge. The CRBG is a series of basalt flows (flood or fissure basalts) that were erupted between 17 million and 6 .

  • Columbia River Basalt: 1980-1981 sample data and chemical ...

    Columbia River Basalt: 1980-1981 Sample Data and Chemical Analysis By Thomas L. Wright, Kevin N. Black, Donald A. Swanson, and Tim O'Hearn* Introduction In this report, we are making available all chemical analyses of whole rocks and selected glasses for samples of Columbia River basalt collected in

  • Oregon: A Geologic History - Unit 8. Columbia River Basalt ...

    8. Columbia River Basalt: the Yellowstone hot spot arrives in a flood of fire: Seventeen million years ago the Yellowstone hot spot, a plume see Plate Tectonics diagram of very hot rock, rose from deep within the Earth beneath eastern Oregon, setting off a huge pulse of volcanic activity. The first eruptions were a series of gigantic lava ...

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  • A Summary of Columbia River Basalt Group Physical .

    The Columbia River Basalt Group (CRBG) hosts a regional aquifer system in portions of Washington, Oregon, and Idaho which is the primary, and in many cases the only, water supply for numerous communities, small water systems, individual homes, industry, and agriculture. In much of the semi-arid Columbia Plateau, portions of the CRBG aquifer

  • Category:Columbia River Basalt Group - Wikimedia Commons

    English: The Columbia River Basalt Group is a geological formation that occurs in the Columbia Plateau, in the U.S. states of Washington, Oregon, Idaho, Nevada, and California Columbia River Basalt Group

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  • Columbia Basin | WA - DNR