Natural environment

Natural environment

Related to any physical feature of the earth's natural environment.

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Natural environment > Volcano

subduction zone

Natural environment; Volcano

The zone of convergence of two tectonic plates, one of which usually overrides the other.

volcano

Natural environment; Volcano

A vent in the surface of the Earth through which magma and associated gases and ash erupt; also, the form or structure (usually conical) that is produced by the ejected material.

tuff cone

Natural environment; Volcano

A type of volcanic cone formed by the interaction of basaltic magma and water. Smaller and steeper than a tuff ring.

tumulus

Natural environment; Volcano

A doming or small mound on the crest of a lava flow caused by pressure due to the difference in the rate of flow between the cooler crust and the more fluid lava below.

trachyte

Natural environment; Volcano

A group of fine-grained, generally porphyritic, extrusive igneous rocks having alkali feldspar and minor mafic minerals as the main components, and possibly a small amount of ...

xenoliths

Natural environment; Volcano

A foreign inclusion in an igneous rock.

tuff ring

Natural environment; Volcano

A wide, low-rimmed, well-bedded accumulation of hyalo-clastic debris built around a volcanic vent located in a lake, coastal zone, marsh, or area of abundant ground water.