caldera- a large crater caused by the violent explosion of a volcano that collapses into a depression geological formation,formation- (geology) the geological features of the earth maar- a flat-bottomed volcanic crater that was formed by an explosion; often filled with water ...
Define volcanic. volcanic synonyms, volcanic pronunciation, volcanic translation, English dictionary definition of volcanic. adj. 1. Of, resembling, or caused by a volcano or volcanoes: a volcanic peak; volcanic islands. 2. Produced by or discharged from
Also called impact crater;. a large bowl-shaped depression on the surface of the earth or other heavenly body, formed by the impact of a meteorite. Compare astrobleme. a similar depression or cavity that forms the opening of a volcano or geyser. The volcanic activity that creates such crat...
Volcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases. The term volcano can also refer to the landform created by the accumulation of solidified lava and volcanic
Volcanic Hazards & Prevention: Landslides, Lahars & Tsunamis5:44 Ch 10.Weathering, Erosion & Wasting Ch 11.Sedimentary & Metamorphic Rocks Ch 12.Geological Forms Ch 13.Water Balance Ch 14.Understanding Running Water Ch 15.Overview of Groundwater Systems ...
• He said it the first time standing beside the crater at the U. P. Fonseca where the motorbike had been blown up.• Long chains of tiny craters on Phobos suggest the drainage of regolith into deep cracks that riddle its interior....
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Crater Lake was formed after an ancient volcanic cone collapsed. Less often lakes are formed by land slides, rock slides, or beaver dams. People also create lakes by digging out large areas of land and by building dams. These are often used for reservoirs, energy production, and recreation....
apart from disturbances produced by infrequent later impacts. Volcanic activity has been an important force in the shaping of the surfaces of the Moon and the terrestrial planets. Seismic activity on the Moon has been monitored by means of seismometers left on its surface byApolloastronauts and by...