11 Terms
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Volcano
A vent or opening in a planet's surface that lets out pressurized molten rocks or magma, and gases from the inner core. Volcanoes come in various shapes and structure, but the most common ones are mountain-like structures with a crater at the summit.
Industry: Natural environment
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Volcano
Composite volcano
Natural environment; Volcano
A steep volcanic cone built by both lava flows and pyroclastic eruptions.
Continental crust
Natural environment; Volcano
Solid, outer layers of the earth, including the rocks of the continents.
Country rocks
Natural environment; Volcano
The rock intruded by and surrounding an igneous intrusion.
Fault scarp
Natural environment; Volcano
A steep slope or cliff formed directly by movement along a fault and representing the exposed surface of the fault before modification by erosion and weathering.
Fumarole
Natural environment; Volcano
A vent or opening through which issue steam, hydrogen sulfide, or other gases. The craters of many dormant volcanoes contain active fumaroles.
Fissures
Natural environment; Volcano
Elongated fractures or cracks on the slopes of a volcano. Fissure eruptions typically produce liquid flows, but pyroclastics may also be ejected.
Formation
Natural environment; Volcano
A body of rock identified by lithic characteristics and stratigraphic position and is mappable at the earth's surface or traceable in the subsurface.
