Natural environment

Natural environment

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

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Natural environment > Volcano

dome

Natural environment; Volcano

A steep-sided mass of viscous (doughy) lava extruded from a volcanic vent (often circular in plane view) and spiny, rounded, or flat on top. Its surface is often rough and blocky ...

dormant volcano

Natural environment; Volcano

Literally, "sleeping. " The term is used to describe a volcano which is presently inactive but which may erupt again. Most of the major Cascade volcanoes are believed to be ...

drainage basin

Natural environment; Volcano

The area of land drained by a river system.

echelon

Natural environment; Volcano

Set of geologic features that are in an overlapping or a staggered arrangement (e.g., faults). Each is relatively short, but collectively they form a linear zone in which the ...

ejecta

Natural environment; Volcano

Material that is thrown out by a volcano, including pyroclastic material (tephra) and lava bombs.

episode

Natural environment; Volcano

An episode is a volcanic event that is distinguished by its duration or style.

eruption

Natural environment; Volcano

The process by which solid, liquid, and gaseous materials are ejected into the earth's atmosphere and onto the earth's surface by volcanic activity. Eruptions range from the ...