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Philip Smith Mountains
The Philip Smith Mountains are a mountain range in the Brooks Range within the state of Alaska. They extend from the Sagavanirktok River and North Fork Chandalar River on the southwest to Canning River and East Fork Chandalar River on the northeast. The range was named in 1950 after Philip Sidney Smith (1877-1949), chief Alaska geologist of the USGS from 1925 to 1946. The highest point in the range is Accomplishment Peak {{Short pages monitor [Baidu] |
Accomplishment Peak
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Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now- extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laramide Orogeny
The Laramide orogeny was a time period of mountain building in western North America, which started in the Late Cretaceous, 70 to 80 million years ago, and ended 35 to 55 million years ago. The exact duration and ages of beginning and end of the orogeny are in dispute. The Laramide orogeny occurred in a series of pulses, with quiescent phases intervening. The major feature that was created by this orogeny was deep-seated, thick-skinned deformation, with evidence of this orogeny found from Canada to northern Mexico, with the easternmost extent of the mountain-building represented by the Black Hills of South Dakota. The phenomenon is named for the Laramie Mountains of eastern Wyoming. The Laramide orogeny is sometimes confused with the Sevier orogeny, which partially overlapped in time and space. The orogeny is commonly attributed to events off the west coast of North America, where the Kula Plate, Kula and Farallon Plates were sliding under the North American plate. Most hypothes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brooks Range
The Brooks Range ( Gwich'in: ''Gwazhał'') is a mountain range in far northern North America stretching some from west to east across northern Alaska into Canada's Yukon Territory. Reaching a peak elevation of on Mount Isto, the range is believed to be approximately 126 million years old. In the United States, these mountains are considered a subrange of the Rocky Mountains, whereas in Canada they are considered separate, as the northern border of the Rocky Mountains is considered to be the Liard River far to the south in the province of British Columbia. While the range is mostly uninhabited, the Dalton Highway and Trans-Alaska Pipeline System run through the Atigun Pass (1,415 m, 4,643 ft) on their way to the oil fields at Prudhoe Bay on Alaska's North Slope. The Alaska Native villages of Anaktuvuk and Arctic Village, as well as the very small communities of Coldfoot, Wiseman, Bettles, and Chandalar, are the range's only settlements. In the far west, near the Wul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sagavanirktok River
The Sagavanirktok River or Sag River ( Iñupiaq: ''Saġvaaniqtuuq'') is a stream in the North Slope Borough of the U.S. state of Alaska. It is about long and originates on the north slope of the Brooks Range, flowing north to the Beaufort Sea near Prudhoe Bay. The Trans-Alaska Pipeline System and Dalton Highway roughly parallel it from Atigun Pass to Deadhorse. A glaciation happened approximately at the same time as the Illinoian Stage of central North America at the Sagavanirktok River. See also *List of rivers of Alaska This is a List of rivers in Alaska, which are at least fifth-order according to the Strahler method of stream classification, and an incomplete list of otherwise-notable rivers and streams. Alaska has more than 12,000 rivers, and thousands more st ... References Rivers of North Slope Borough, Alaska Rivers of Alaska Brooks Range {{Alaska-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Fork Chandalar River
The Chandalar River (''T'eedriinjik'' in Gwich'in) is a tributary of the Yukon River in the U.S. state of Alaska. Its peak flow, recorded by the United States Geological Survey (USGS) between 1964 and 1974 at a stream gauge at Venetie, was on June 9, 1968. The Chandalar River main stem begins at the confluence of the North Fork Chandalar River and the Middle Fork Chandalar River and flows generally southeast through the state's northern interior southeast of the Philip Smith Mountains of the Brooks Range. The Chandalar enters the Yukon River northwest of Fort Yukon. In 2015 the Chandalar became federally recognized by the United States Board on Geographic Names as their indigenous Gwichʼin names ''Teedriinjik River'' meaning "shimmering river" and ''Ch'idriinjik River'' meaning "heart river". The names had been in use for over a thousand years by the Athabaskans. Major tributaries North Fork Chandalar River, long,''Alaska Place Names'', p. 698 begins near Atigun Pass in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canning River (Alaska)
The Canning River flows through parts of the North Slope in the U.S. state of Alaska. The river begins in the Franklin Mountains of the Brooks Range in the northeastern part of the state. It flows generally north for through the Arctic National Wildlife Refuge and enters Camden Bay west of Kaktovik on the Beaufort Sea. See also * List of rivers of Alaska This is a List of rivers in Alaska, which are at least fifth-order according to the Strahler method of stream classification, and an incomplete list of otherwise-notable rivers and streams. Alaska has more than 12,000 rivers, and thousands more st ... References Rivers of North Slope Borough, Alaska Rivers of Alaska {{NorthSlopeAK-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Fork Chandalar River
The Chandalar River (''T'eedriinjik'' in Gwich'in) is a tributary of the Yukon River in the U.S. state of Alaska. Its peak flow, recorded by the United States Geological Survey (USGS) between 1964 and 1974 at a stream gauge at Venetie, was on June 9, 1968. The Chandalar River main stem begins at the confluence of the North Fork Chandalar River and the Middle Fork Chandalar River and flows generally southeast through the state's northern interior southeast of the Philip Smith Mountains of the Brooks Range. The Chandalar enters the Yukon River northwest of Fort Yukon. In 2015 the Chandalar became federally recognized by the United States Board on Geographic Names as their indigenous Gwichʼin names ''Teedriinjik River'' meaning "shimmering river" and ''Ch'idriinjik River'' meaning "heart river". The names had been in use for over a thousand years by the Athabaskans. Major tributaries North Fork Chandalar River, long,''Alaska Place Names'', p. 698 begins near Atigun Pass in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philip Sidney Smith
Philip Sidney Smith (28 July 1877 - 10 May 1949) was an American geologist and specialist in the geology of Alaska. On 28 July 1877, Smith was born in Medford, Massachusetts. He attended Harvard University, and under the influence of Nathaniel Shaler, entered the field of geology. He earned his Ph.D. from Harvard in 1904, and joined the Alaskan division of the United States Geological Survey in 1906 under Alfred H. Brooks. In 1925, he was promoted to Chief Alaskan Geologist. In 1929, he served as an official delegate to the Fourth Pacific Scientific Congress in Java, and in 1937, he was Chairman of the US delegation to the Seventeenth International Geological Congress in the Soviet Union. He served as Governor of the Arctic Institute of North America from 1944 until his death. Smith died of pneumonia on 10 May 1949 in St. Albans, Vermont. He was buried in Wolfeboro, New Hampshire. Legacy The Philip Smith Mountains The Philip Smith Mountains are a mountain range in the Brook ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth anniv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
