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Natural environment
Related to any physical feature of the earth's natural environment.
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Natural environment > Volcano
heterolithologic
Natural environment; Volcano
Material is made up of a heterogeneous mix of different rock types. Instead of being composed on one rock type, it is composed of fragments of many different rocks.
Holocene
Natural environment; Volcano
The time period from 10,000 years ago to the present. Also, the rocks and deposits of that age.
horizontal blast
Natural environment; Volcano
An explosive eruption in which the resultant cloud of hot ash and other material moves laterally rather than upward.
horst
Natural environment; Volcano
A block of the earth's crust, generally long compared to its width, that has been uplifted along faults relative to the rocks on either side.
hot spot
Natural environment; Volcano
A volcanic center, 60 to 120 miles (100 to 200 km) across and persistent for at least a few tens of million of years, that is thought to be the surface expression of a persistent ...
hot-spot volcanoes
Natural environment; Volcano
Volcanoes related to a persistent heat source in the mantle.
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