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At about 100,000 years ago, slumping near Las Playas did not result in complete downward slumping of El Golfo volcano's southeast flank into the ocean; instead, a large block of rock moved about 300 m (980 ft) down a steeply-inclined fault (the now inactive San Andrés fault) in what has been described as an "aborted" lateral collapse. [168] [163]
Pahoehoe lava is a relatively smooth lava flow that can be billowy or ropey. They can move as one sheet, by the advancement of "toes", or as a snaking lava column. [10] A'a lava flows are denser and more viscous than pahoehoe, and tend to move slower. Flows can measure 2 to 20 m (7 to 66 ft) thick.
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A lahar travels down a river valley in Guatemala near the Santa Maria volcano, 1989. A lahar (/ ˈ l ɑː h ɑːr /, from Javanese: ꦮ꧀ꦭꦲꦂ) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water.
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There are primarily two kinds of basaltic lava flows: pahoehoe and ʻaʻā. Pahoehoe is smooth, often ropy and is the most common type of lava in Lava Beds. ʻAʻā is formed when pahoehoe cools and loses some of its gases. ʻAʻā is rough, sharp, and jagged; an excellent example is the Devil's Homestead lava flow, which originated at Fleener ...
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Bands used for smart watches and fitness trackers contain a synthetic rubber made with PFAS — also known as “forever chemicals” — and researchers are warning that these may be absorbed ...