دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. the emission of magma (as lava) at the earths surface. 2. the body of igneous rock produced by the process of extrusion.

n: igneous rock fanned from lava poured out on the earths surface.

n: magma that reaches the surface of the earth.

magma that comes to the earth’s surface.

n: the hot fluid matter within the earths crust that is capable of intrusion or extrusion and that produces igneous rock when cooled.

molten rock (lava) that crystallizes into an igneous rock.

n: vesicular obsidian formed from gas-filled lava that cooled rapidly. It is often light enough to float on water.

n pi: particles produced directly by volcanic action when gases within molten lava expand rapidly and the water suddenly flashes into steam, blasting the molten mass into tiny splinters of solidifying glass. The hot particles eventually come to rest in thick blankets of cooling cinders, called ash.