aulacogen
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Aulacogen — In geology, an aulacogen is a failed arm of a triple junction of a plate tectonics rift system. A triple junction beneath a continental plate initiates a three way breakup of the continental plate. As the continental break up develops one of the… … Wikipedia
New Madrid Seismic Zone — Coordinates: 36°34′57″N 89°35′17″W / 36.58245°N 89.58801°W / 36.58245; 89.58801 … Wikipedia
Wichita Mountains — Range Elk Mountain, in the eastern Wichita Mountains … Wikipedia
Great Lakes — This article is about the Great Lakes of North America. For the region, see Great Lakes region (North America). For other uses of this term, see Great Lakes (disambiguation). A rare cloudless satellite view of the entire Great Lakes region, April … Wikipedia
Mississippi River — For the river in Canada, see Mississippi River (Ontario). Coordinates: 29°09′04″N 89°15′12″W / 29.15111°N 89.25333°W / … Wikipedia
Rio Grande rift — The Rio Grande rift is a rift valley extending north from Mexico, near El Paso, Texas through New Mexico into central Colorado. [Keller, R., and Baldridge, W.S., Rocky Mountain Geology; March 1999; v. 34; no. 1; p. 121 130; DOI: 10.2113/34.1.121 … Wikipedia
Bay of Fundy — The Bay of Fundy ( fr. Baie de Fundy) is a bay on the Atlantic coast of North America, on the northeast end of the Gulf of Maine between the Canadian provinces of New Brunswick and Nova Scotia, with a small portion touching the U.S. state of… … Wikipedia
1812 New Madrid earthquake — The Great Earthquake at New Madrid. A nineteenth century woodcut from Devens Our First Century (1877) … Wikipedia
Rift valley — A rift valley is a linear shaped lowland between highlands or mountain ranges created by the action of a geologic rift or fault. This action is manifest as crustal extension, a spreading apart of the surface which is subsequently further deepened … Wikipedia
List of geology topics — This is a list of all articles related to geology that cannot be readily placed on the following subtopic pages: Geology subtopics* Geologic time scale * List of compounds * List of earthquakes * List of elements by name * List of geology of… … Wikipedia
