Geology

Geology

The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.

Industry: Earth science

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Geology

Archean aeon

Earth science; Geology

The time interval between 3800-2500 million years ago. The Archean is one of the Precambrian time intervals.

Anticline

Earth science; Geology

A fold that is convex upward, or that had such an attitude at some stage of its development. compare syncline

Aphanitic

Earth science; Geology

A textural term meaning "fine-grained" that applies to igneous rocks.

Ash

Earth science; Geology

Fine particles of volcanic rock and glass blown into the atmosphere by a volcanic eruption.

Tephra is the general term now used by volcanologists for airborne volcanic ejecta of any size. Historically, however, various terms have been used to describe ejecta of different sizes. Fragments ...

Basin and range province

Earth science; Geology

This province extends from eastern California to central Utah, and from southern Idaho into the state of Sonora in Mexico. Within the Basin and Range province the Earth's crust and uppermost mantle ...