extrusive
Example Sentences
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Andesite is a fine crystalline intermediate extrusive rock.
From Textbooks • Jan. 1, 2017
When lava is extruded onto the surface, or intruded into shallow fissures near the surface and cools, the resulting igneous rock is called extrusive or volcanic.
From Textbooks • Jan. 1, 2017
In some cases, extrusive lava cools so rapidly it does not develop crystals at all.
From Textbooks • Jan. 1, 2017
Basalt and gabbro are the extrusive and intrusive names for mafic igneous rocks, and peridotite is ultramafic, with komatiite as the fine-grained extrusive equivalent.
From Textbooks • Jan. 1, 2017
Deposits formed at shallow depths are related to extrusive rocks and to intrusives near the surface.
From The Economic Aspect of Geology by Leith, C. K. (Charles Kenneth)
Vocabulary lists containing extrusive
Physical Geography - High School
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Earth Science - Middle School
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Rocks and Minerals - Introductory
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