extrusive

listen to the pronunciation of extrusive
English - English
Rock which has been formed through volcanic extrusion
Jutting out; extruding
Igneous rock that cools on the surface of the Earth, including beneath water; typically with small crystals due to rapid cooling Also known as volcanic; opposite of intrusive or plutonic
rock or volcanic rock ligneous rock formed on the surface of the Earth; for example, basalt
Pertaining to igneous rocks that solidify on the surface of the earth
{s} tending to push out; tending to project; of molten rock that was forced through cracks in the earth's surface
igneous rock which has been erupted to the surface by volcanic activity
Igneous rock that formed when magma erupted onto the surface of the earth and cooled
Forced out at the surface; as, extrusive rocks; contrasted with intrusive
A category of igneous rocks that have crystallized on the surface from lava
adj describes an igneous rock that was extruded from the earth (through flow or eruption) and subsequently cooled above the surface of the earth
Igneous Antonym of intrusive
of rock material; forced out while molten through cracks in the earth's surface
extrusive rock
Any igneous rock derived from magma that is poured out or ejected at the Earth's surface. Extrusive rocks are usually distinguished from intrusive rocks on the basis of their texture and mineral composition. Lava flows and pyroclastic debris (fragmented volcanic material) are extrusive; they are commonly glassy (e.g., obsidian) or finely crystalline (e.g., basalts and felsites)
extrusive
Favorites