The physiographic regions of the contiguous United States comprise 8 regions, 25 provinces, and 85 sections. The system dates to Nevin Fenneman's paper Physiographic Subdivision of the United States, published in 1917. Fenneman expanded and presented his system more fully in two books, Physiography of western United States (1931), and Physiography of eastern United …

The Laurentian Divide also called the Northern Divide and locally the height of land, is a continental divide in central North America that separates the Hudson Bay watershed to the north from the Gulf of Mexico watershed to the south and the Great Lakes-St. Lawrence watershed to the southeast.. Water north of the divide flows to Hudson Bay; water south of the divide and …

About the Journal. Geology has been the Web of Science's #1 ranked "geology" journal for 15 years in a row.. The journal Geology publishes timely, innovative, and provocative articles relevant to its international audience, representing research from all fields of the geosciences. Full-text available for all issues. Submit Author Information

The Semitic sound value of Qôp was /q/ (voiceless uvular stop), and the form of the letter could have been based on the eye of a needle, a knot, or even a monkey with its tail hanging down. /q/ is a sound common to Semitic languages, but not found in many European languages. Some have even suggested that the form of the letter Q is even more ancient: it could have originated …

The Great Lakes, also called the Great Lakes of North America or the Laurentian Great Lakes, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River.There are five lakes, which are Superior, Michigan, Huron, Erie, and Ontario and are in general on or near the Canada–United …

The Laurentian Fan or Laurentian Abyss is an underwater depression off the eastern coast of Canada in the Atlantic Ocean. It is part of the Laurentian cone region, bound by the Laurentian Channel and the Sohm Abyssal Plain.. Towards the end of the 1980s, it was discovered unexpectedly that the fan is the site of hydrothermal vents with their own ecosystems …

Canadian Shield, one of the world’s largest geologic continental shields, centred on Hudson Bay and extending for 8 million square km (3 million square miles) over eastern, central, and northwestern Canada from the Great Lakes to the Canadian Arctic and into Greenland, with small extensions into northern Minnesota, Wisconsin, Michigan, and New York, U.S. The Canadian …

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Isostasy (Greek ísos "equal", stásis "standstill") or isostatic equilibrium is the state of gravitational equilibrium between Earth's crust (or lithosphere) and mantle such that the crust "floats" at an elevation that depends on its thickness and density. This concept is invoked to explain how different topographic heights can exist at Earth's surface. Although originally defined in terms of ...

Dec 02, 2022 · S. Korea Ex-Spy Chief Arrested Over Sea Border Shooting: Yonhap Jon Herskovitz and Hooyeon Kim , Bloomberg News (Bloomberg) -- A South Korean court approved the arrest of a former security chief accused of covering up the death of a fisheries official by North Korean soldiers near a nautical border, Yonhap reported.