[GEOL105] - Final Exam Guide - Comprehensive Notes for the exam (43 pages long!)
29 Nov 2016
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Crust forms quickly, interior cools much more slowly. The cooled and solidi ed rock is also referred to as lava. Very fluid: thin ows can travel long distances and cover large areas. Higher viscosity: thicker flows, do not travel as far as basalt. Magma thrown through air: can be mixed w volcanic gases. Very small pumice fragments, glass shards, or rock fragments. As cloud win moves down, ash comes down. Larger eruptions produce more ash and distribute it farther. Repeated plinian and vulcanian eruptions build stratovolcanoes or composite cones. Small eruption produced large lahar buried town of armero, killed 28,000. Massive debris ow and lateral blast followed by a pinion eruption. Volcanic domes: made form highly vicious intermediate and felsic magma, may have explosive eruptions, small domes form independently or often within stratovolcano crater after an explosive eruption. Collapsed volcano most form during very explosive eruption at yellowstone.
