extrusive -- Igneous. Antonym of intrusive. fault -- n. (v.) A fracture, or large crack, in the Earth's crust where one side moves up/down/sideways relative to the other; faultblock- n.
extrusive Pertaining to igneous rocks or features formed from lava released on the Earth's surface. facies see metamorphic facies , sedimentary facies ...
An extrusiveigneous rock that develops from a magma that is chemically between felsic and mafic and whose mineral crystals are fine. Andisols ...
A dark-colored fine-grained extrusiveigneous rock composed largely of plagioclase feldspar and pyroxene. Similar in composition to gabbro. Basalt is thought to be one of the main components of oceanic crust. Base Flow: ...
Vegetation is shown in orange; basalts in gray; silicic extrusives in pinkish-orange.
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