Home > Term: extrusive
extrusive
Said of igneous rock that has been erupted onto the surface of the Earth. Extrusive rocks include lava flows and pyroclastic material such as volcanic ash. An extrusive rock. Compare: intrusive volcanic; eruptive.
- Kalbos dalis: adjective
- Pramonės šaka / sritis: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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- ed.young
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(Milwaukee, United States)