New York Geology

This set of flashcards covers key geological terms and concepts from the lecture on New York Geology.

Middle Proterozoic

A geological period characterized by Snowball Earth and the formation of bedrock for New York and much of the East Coast.

Anorthosite

A type of intrusive igneous rock, commonly found in the Adirondack region of New York.

Grenville Province

An area in New York where Grenville rocks are exposed at the surface, underwent deformation during multiple orogenies.

Iapetus Ocean

An ancient ocean that existed during the late Proterozoic, involved in rifting and continental formation.

Nonconformity

A type of geological unconformity where sedimentary rocks overlie metamorphic or igneous rocks.

Taconic Orogeny

A geological event that involved the subduction of Iapetus Ocean crust under the Taconic Island Arc.

Stromatolites

Layered structures formed by the activity of microorganisms, significant in historical geological records.

Acadian Orogeny

A mountain-building event that occurred during the early to middle Devonian period.

Mississippian-Pennsylvanian

Time periods noted for significant tectonic activity, though with limited geological impact in New York.

Pleistocene Glaciation

A period marked by extensive glaciation, influencing the landscape of modern New York.