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Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Geology

magnetic anomaly

Earth science; Geology

The amount by which a measurement of the local magnetic field intensity exceeds or falls below the intensity of the global magnetic field.

magnetic chron

Earth science; Geology

Time during which magnetic polarity is dominantly normal or dominantly reversed.

ice sheet

Earth science; Geology

A broad, mound-like mass of glacier ice that usually spreads radially outward from a central zone.

ice shelf

Earth science; Geology

A floating ice sheet extending across water from a land-based glacier.

igneous rock

Earth science; Geology

A rock that has crystallized from a molten state.

inclined bedding (cross-bedding)

Earth science; Geology

Bedding laid down at an angle to the horizontal, as in many sand dunes.

inclined fold

Earth science; Geology

A fold whose axial plane is inclined from the vertical, but in which the steeper of the two limbs is not overturned.