batholith


bath·o·lith

noun \ˈba-thə-ˌlith\

Definition of BATHOLITH

:  a great mass of intruded igneous rock that for the most part stopped in its rise a considerable distance below the surface
bath·o·lith·ic \ˌba-thə-ˈli-thik\ adjective

Origin of BATHOLITH

Greek bathos depth + International Scientific Vocabulary -lith
First Known Use: 1884

batholith

noun    (Concise Encyclopedia)

Large body of igneous rock formed beneath the Earth's surface by the intrusion and solidification of magma. Batholiths are usually composed of coarse-grained rocks (e.g., granite or quartz diorite) and often have an irregular shape, with side walls that incline steeply. They may have a surface exposure of 40 sq mi (100 sq km) or more and may be 6–9 mi (10–15 km) thick. A well-known batholith is located in the Sierra Nevada range of California.

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