extrusive
Example Sentences
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These are known as fine-grained extrusive, or volcanic, igneous rocks.
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
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
Thus, granite is an igneous, intrusive rock; lava is an igneous, extrusive rock.
From Let's Collect Rocks and Shells by Shell Union Oil Corporation
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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