28 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
Single chains
Earth science; Geology
A class or structural type of silicate characterised by the linkage of the SiO 4 tetrahedra into linear chains by the sharing of oxygens. In a simple chain, e.g. pyroxenes, two oxygens are shared.
Shield
Earth science; Geology
A large region of exposed basement rocks, commonly with a very gently convex surface, surrounded by sediment covered platforms; e.g. Canadian Shield. Shield rocks are usually Precambrian in age.
Sedimentary
Earth science; Geology
A layered rock resulting from the consolidation of sediment, e.g. a clastic rock such as sandstone, a chemical rock such a salt, or an organic rock such as coal. Usually includes pyroclastic rocks, ...
Shepherd satellites
Earth science; Geology
A shepherd moon is a satellite that constrains the extent of a planetary ring through gravitational forces.
Shield volcano
Earth science; Geology
A volcano in the shape of a flattened cone, broad and low, built by very fluid flows of basaltic lava.
Silicic volcanism
Earth science; Geology
Said of silica rich igneous rocks or magma, with silica contents 65%.
U-shaped valley
Earth science; Geology
A deep, steep-sided through leading down from a cirque, and excavated by an alpine glacier that has widened, deepened, and straightened a preglacial river valley; e.g. Yosemite Valley, California.
