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

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...

a physical geography term referring to a roughly crescent-shaped geological formation of dark fertile soil in the Southern United States. It is about 300...

A rock formation is an isolated, scenic, or spectacular surface rock outcrop. Rock formations are usually the result of weathering and erosion sculpting...

composed of an outcrop belt of the Lockport Formation of Silurian age, and is similar to the Onondaga Formation, which runs in a parallel outcrop belt just...

Smackover Formation is a geologic formation in Arkansas. It preserves fossils dating back to the Jurassic period. The Smackover Formation consists of...

The Flat Landing Brook Formation is a geological formation in Gloucester County of northern New Brunswick, Canada. It consists mostly of volcanic rocks...

Commons has media related to Bakken Formation. Geology.Com: Bakken formation, accessed 4 March 2009 US Geological Survey: Assessment of undiscovered oil...

Chimney Rock is a prominent geological rock formation in Morrill County in western Nebraska. Rising nearly 300 feet (91 m) above the surrounding North...

Geological Survey Professional Paper. 594 (D): 1-26. Retrieved 8 February 2021. Daniel, J.A.; Bartholomew, M.J.; Murray, R.C. (1992). "Geological Characteristics...