26 Terms
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Geology
The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.
Industry: Earth science
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Geology
basalt
Earth science; Geology
A dark, fine-grained, extrusive (volcanic) igneous rock with a low silica content (40% to 50%), but rich in iron, magnesium and calcium. Generally occurs in lava flows, but also as dikes. Basaltic ...
base level
Earth science; Geology
The level (elevation) at which a stream or river can erode no more, usually sea level.
base surge
Earth science; Geology
Turbulent, low-density cloud of rock debris and water and (or) steam that moves over the ground surface at high speed. Base surges are generated by explosions.
basin
Earth science; Geology
A synclinal structure, roughly circular in its outcrop pattern, in which beds dip gently toward the center from all directions.
basin and range province
Earth science; Geology
This province extends from eastern California to central Utah, and from southern Idaho into the state of Sonora in Mexico. Within the Basin and Range province the Earth's crust and uppermost mantle ...
bedding
Earth science; Geology
Sedimentary layers in a rock. The beds are distinguished from each other by grain size and composition, such as in shale and sandstone. Subtle changes, such as beds richer in iron-oxide, help ...
