Geology

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

Pyroxene

Earth science; Geology

A group of the common rock forming minerals with the general formula, ABSi 2 O 6 , where A is chiefly Mg, Fe +2 , Ca or Na, and B is Mg, Fe +2 or Al.

Polymorph

Earth science; Geology

The characteristic of a chemical substance to crystallise in more than one form, e.g. rhombic and monoclinic sulfur.

Proterozoic

Earth science; Geology

The entire Precambrian ranging from about 4500 mya to 570 mya and includes the Hadean and the Archean.

Proton

Earth science; Geology

The massive, positively charged particle in the nucleus of an atom.

Shearing

Earth science; Geology

The motion resulting from stresses that cause or tend to cause contiguous parts of a body to slide relatively to each other.

A compound whose crystal structure contains SiO 4 tetrahedra, either isolated or joined through one or more of the oxygen atoms to form groups, chains, sheets, or three dimensional structures with ...

Sif Mons

Earth science; Geology

A large shield volcano on Venus (similar to Hawaii or Olympus Mons). Its dark central caldera, which may contain pools of lava, is surrounded by extensive flow features that seem to cascade down its ...