10 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
Northern plains
Earth science; Geology
The northern hemisphere on Mars where volcanic flows surround the largest volcanoes, but elsewhere the plains are featureless except for craters and mare-like ridges.
Muscovite
Earth science; Geology
A mineral of the mica group: KAl 2 (AlSi 3 )O 10 (OH) 2 . It is colourless to pale brown, and is a common mineral in gneisses and schists, in granites and pegmatites, and in may sedimentary rocks, ...
Oceanic crust
Earth science; Geology
The oceanic crust underlies the ocean basins and is equivalent to the sima. The oceanic crust is about 5 to 10 km thick, has a density of 3.0 g/cm 3 , and compressional seismic wave velocities ...
Olivine
Earth science; Geology
A green or brown orthorhombic mineral, (Mg,Fe) 2 SiO 4 . It consists of the isomorphous solid-solution series forsterite-fayalite.
Olivine phenocrysts
Earth science; Geology
The relatively large and ordinarily conspicuous crystal of the mineral olivine generated early in prophyritic igneous rocks.
Neutrino
Earth science; Geology
An elementary particle that has little or no rest mass and no charge which carries energy from a nuclear reaction.
Comet nucleus
Earth science; Geology
The frozen core of a comet which contains almost the entire cometary mass and is located in the comet's head.
