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  2. Columbia River Basalt Group - Wikipedia

    en.wikipedia.org/wiki/Columbia_River_Basalt_Group

    Learn about the youngest and best-preserved continental flood basalt province on Earth, covering over 210,000 km2 mainly in the Pacific Northwest. Find out how it was formed, when it erupted, and what fossils and features it contains.

  3. Basalt - Wikipedia

    en.wikipedia.org/wiki/Basalt

    Basalt is a fine-grained, mafic volcanic rock formed from rapid cooling of low-viscosity lava rich in magnesium and iron. It is the most common type of volcanic rock on Earth and other planetary bodies, and has various colours, textures, and mineral contents.

  4. Metacomet Ridge - Wikipedia

    en.wikipedia.org/wiki/Metacomet_Ridge

    Metacomet Ridge is a fault-block mountain ridge in southern New England, composed of volcanic basalt and sedimentary rock. It extends from Long Island Sound to northern Massachusetts, and has scenic views, diverse ecosystems, and historical significance.

  5. Saddle Mountains - Wikipedia

    en.wikipedia.org/wiki/Saddle_Mountains

    The top exposed layer of Columbia River Basalt Group basalt in the Saddle Mountains is the Saddle Mountain Basalt, which ranges from 120 – 240 meters (400 – 800 feet) in thickness and is interspersed by sedimentary layers of the Ellensburg Formation. The Saddle Mountain Basalt is composed of the Umatilla Member flows, the Wilbur Creek ...

  6. Columbia Plateau - Wikipedia

    en.wikipedia.org/wiki/Columbia_Plateau

    The Columbia Plateau is a flood basalt plateau between the Cascade Range and the Rocky Mountains, cut through by the Columbia River. It covers parts of Washington, Oregon, and Idaho, and includes cities such as Spokane, Yakima, Pasco, Pendleton, and Coeur d'Alene.

  7. List of places with columnar jointed volcanics - Wikipedia

    en.wikipedia.org/wiki/List_of_places_with...

    Columnar jointing is a type of volcanic rock formation that creates hexagonal or polygonal columns. This article lists many locations around the world where columnar jointing can be seen, such as basalt columns in Ireland, Japan, and Indonesia.

  8. Lake Christine Fire - Wikipedia

    en.wikipedia.org/wiki/Lake_Christine_Fire

    Some areas along the eastern edge of the fire in Basalt were impacted by mudslide and debris activity in August 2019. Colorado Parks and Wildlife specifically outlaws flammable tracer round ammunition at the Lake Christine Wildlife Shooting Range in Basalt, and this provision was in effect on July 3 on posted signage at the range.

  9. Blueschist - Wikipedia

    en.wikipedia.org/wiki/Blueschist

    Blueschist is a metavolcanic rock that forms by the metamorphism of basalt and rocks with similar composition at high pressures and low temperatures. It contains glaucophane, lawsonite, garnet and other minerals that give it a blue or green color.

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