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

gneiss

Earth science; Geology

A coarse, foliated metamorphic rock in which bands of granular minerals (commonly quartz and feldspars) alternate with bands of flaky or elongate minerals (e.g., micas, pyroxenes). Generally less ...

graben

Earth science; Geology

An elongate block of rock down-dropped along roughly parallel faults.

graded bed

Earth science; Geology

A sediment layer with a gradation of grain size from large grains to finer grains.

granite

Earth science; Geology

Light colored, coarse grained, intrusive igneous rock characterized by the minerals orthoclase and quartz with lesser amounts of plagioclase feldspar and iron-magnesium minerals. Underlies large ...

granitic

Earth science; Geology

A general term for intrusive igneous rocks that look similar to granite but may range in composition from quartz-diorite to granite. All granitic rocks are light colored; feldspar and quartz are ...