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  1. Columbia River Basalt Group - Wikipedia

    • In the middle Miocene, 17 to 15 Ma, the Columbia Plateau and the Oregon Basin and Range of the Pacific Northwest were flooded with lava flows. Both flows are similar in composition and age, and have been attributed to a common source, the Yellowstone hotspot. See more

    Overview

    The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt provinces on Earth, covering over 210,000 km (81,000 sq mi) mainly eastern Oregon and … See more

    Introduction

    During the middle to late Miocene epoch, the Columbia River flood basalts engulfed about 163,700 km (63,200 sq mi) of the Pacific Northwest, forming a large igneous province with an estimated volume of 174,300 km (41,800 cu … See more

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  2. Basalt flows can be found in various locations, including12:
    • Shield volcanoes such as in Hawai’i
    • Vents at the base of a cinder cone such as Sunset Crater Volcano National Monument in Arizona
    • Fissure volcanoes such as at Craters of the Moon National Monument in Idaho
    • Monogenetic volcanic fields like at El Malpais National Monument in New Mexico
    • Volcanic islands like Iceland, the Azores, and the Galapagos Islands
    • Submarine volcanic regions such as the Juan de Fuca Ridge off the coast of the Pacific Northwest in the United States
    Most of Earth's basalt is produced at divergent plate boundaries on the mid-ocean ridge system3.
    Learn more:
    Basaltic lava flows may be erupted from shield volcanoes such as in Hawai’i, from vents at the base of a cinder cone such as Sunset Crater Volcano National Monument in Arizona, fissure volcanoes such as at Craters of the Moon National Monument in Idaho, and in monogenetic volcanic fields like at El Malpais National Monument in New Mexico.
    www.nps.gov/subjects/volcanoes/basaltic-lava-flow…
    For example, basaltic lava flows can be found in volcanic islands like Iceland, the Azores, and the Galapagos Islands, as well as in submarine volcanic regions such as the Juan de Fuca Ridge off the coast of the Pacific Northwest in the United States.
    geologyscience.com/rocks/basalt/
    Most of Earth's basalt is produced at divergent plate boundaries on the mid-ocean ridge system (see map). Here convection currents deliver hot rock from deep in the mantle. This hot rock melts as the divergent boundary pulls apart, and the molten rock erupts onto the sea floor.
    geology.com/rocks/basalt.shtml
     
  3. Columbia River Basalt Group Stretches from Oregon to Idaho

     
  4. Flood basalt - Wikipedia

  5. Basalt - Wikipedia

    The shape, structure and texture of a basalt is diagnostic of how and where it erupted—for example, whether into the sea, in an explosive cinder eruption or as creeping pāhoehoe lava flows, the classic image of Hawaiian basalt eruptions.

  6. Basalt: Igneous Rock - Pictures, Definition, Uses & More

  7. Flood Basalts | Volcano World | Oregon State University

  8. Columbia River basalts - Idaho State University

    Accounting for approximately 90% of all the basalt in the Columbia River basalts, the overlying Grande Ronde Basalt is the most extensive; covering 163,700 km 2. The formation was deposited between 16.5 and 16.1 million years ago and …

  9. Columbia River Basalt Stratigraphy in the Pacific Northwest

  10. The Columbia River Basalt Group: from the gorge to the sea

  11. Columbia River Basalts: Features of a Typical Flow

  12. Field-trip guide to Columbia River flood basalts, associated …

  13. Basalt | Properties, Formation, Composition, Uses - Geology …

  14. Rapid eruption of the Columbia River flood basalt and ... - AAAS

  15. The Chief Joseph dike swarm of the Columbia River flood …

  16. Origin of Columbia River flood basalt controlled by ... - Nature

  17. What are the different types of basaltic lava flows and how do …

  18. Northwest geologist hot on the trail of Ginkgo lava flow

  19. The Columbia River Basalt Group: from the gorge to the sea

  20. Columbia River basalts erupted faster than thought - EARTH …

  21. Lava Flows | U.S. Geological Survey - USGS.gov

  22. Comparison of mechanical and physical behaviors of …