Geology

Geology (from Ancient Greek γῆ (gê) 'earth', and λoγία (-logía) 'study of, discourse') is a branch of natural science concerned with the Earth and other...

The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological...

In geology, rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included...

In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass...

A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from...

Engineering geology is the application of geology to engineering study for the purpose of assuring that the geological factors regarding the location,...

In geology, a depression is a landform sunken or depressed below the surrounding area. Depressions form by various mechanisms. Erosion-related: Blowout:...

late crystallizing minerals. Essentials of Geology, 3rd Ed, Stephen Marshak, p G-7 Essentials of Geology, 3rd Ed, Stephen Marshak, p G-5 Goldich, Samuel...

Planetary geology, alternatively known as astrogeology or exogeology, is a planetary science discipline concerned with the geology of celestial bodies...

In geology and related fields, a stratum (pl.: strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that...

A geologic map or geological map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or...

Economic geology is concerned with earth materials that can be used for economic and industrial purposes. These materials include precious and base metals...

A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave...

Indian peninsula. Basement (geology) Craton Platform (geology) Kearey, P. (2001). The new Penguin dictionary of geology (2nd ed.). London: Penguin. p...

The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the United States government whose work spans the disciplines...

Flood geology (also creation geology or diluvial geology) is a pseudoscientific attempt to interpret and reconcile geological features of the Earth in...

A geologic province is a spatial entity with common geologic attributes. A province may include a single dominant structural element such as a basin or...

Structural geology is the study of the three-dimensional distribution of rock units with respect to their deformational histories. The primary goal of...

making up about 84% of Earth's volume. It is predominantly solid, but in geological time it behaves as a viscous fluid. Partial melting of the mantle at mid-ocean...

capstones at a rate of nearly one centimeter per year, faster than most geologic structures. Hoodoos typically form in areas where a thick layer of a relatively...