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The largest of the Northern Basin and Range subregions, the High Lava Plains covers 10,262 square miles (26,578 km 2) in Oregon and 5,740 square miles (14,867 km 2) in Nevada, featuring a variety of land uses, including rangeland, wildlife habitat, irrigated pastureland and cropland, historic gold and silver mines, and active opal mines and ...
The two main types of lava field structures are defined as sheet flow lava and pillow lava. Sheet flow lava appears like a wrinkled or folded sheet, while pillow lava is bulbous, and often looks like a pile of pillows atop one another. [2] An important aspect of lava flow morphology is a phenomenon known as lava flow inflation.
In 1992, Coffin and Eldholm initially defined the term "large igneous province" as representing a variety of mafic igneous provinces with areal extent greater than 100,000 km 2 that represented "massive crustal emplacements of predominantly mafic (magnesium- and iron-rich) extrusive and intrusive rock, and originated via processes other than 'normal' seafloor spreading."
Four Craters Lava Field is a basaltic volcanic field located south east of Newberry Caldera in the U.S. state of Oregon. [1] The volcanic field covers about 30 square kilometers and post-dates Mount Mazama's eruption. [3] Four Holocene cinder cones are the source of the flows in the field and are aligned along a fissure trending N 30° W. The ...
The pit, like the more than 200 others discovered up there, was created by the collapse of a lava tube. ... Most of the pits seem to be located in the moon’s ancient lava plains, according to ...
The Squaw Ridge Lava field, also known as the East Lava Field, is a young basaltic field located in the U.S. state of Oregon southeast of Newberry Volcano. [1] The flow erupted from the Lava Mountain shield and is likely related to the Four Craters Lava Field , both of which were created after Mount Mazama erupted.
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The crater is 944 ft (288 m) above sea level, about 250 ft (76 m) above the surrounding basalt lava plains. The scenic and solitary Amboy Crater was a popular sight and stop for travelers on U.S. Route 66 in California before the opening of Interstate 40 in 1973.