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Natural environment
Related to any physical feature of the earth's natural environment.
17Categories 71833Terms
Add a new termContributors in Natural environment
Natural environment > Volcano 
airfall
Natural environment; Volcano
Volcanic ash that has fallen through the air from an eruption cloud. A deposit so formed is usually well sorted and layered.
ash flow
Natural environment; Volcano
A turbulent mixture of gas and rock fragments, most of which are ash-sized particles, ejected violently from a crater or fissure. The mass of pyroclastics is normally of very ...
asthenosphere
Natural environment; Volcano
The shell within the earth, some tens of kilometers below the surface and of undefined thickness, which is a shell of weakness where plastic movements take place to permit ...
aquifer
Natural environment; Volcano
A body of rock that contains significant quantities of water that can be tapped by wells or springs.
avalanche
Natural environment; Volcano
A large mass of material or mixtures of material falling or sliding rapidly under the force of gravity. Avalanches often are classified by their content, such as snow, ice, soil, ...
basalt
Natural environment; Volcano
Volcanic rock (or lava) that characteristically is dark in color, contains 45% to 54% silica, and generally is rich in iron and magnesium.
basement
Natural environment; Volcano
The undifferentiated rocks that underlie the rocks of interest in an area.
Sub-categories
- Air (43)
- Atmosphere (59)
- Climate (1147)
- Climate change (10457)
- Coral reefs (23903)
- Deserts (738)
- Earthquake (7143)
- Flood (34)
- Forests (37)
- Grassland (35)
- Land mass (144)
- Landslide (66)
- Mountains (203)
- Plateau (39)
- Speleology (1857)
- Volcano (5852)
- Water (18527)