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Saint Elias Mountains
The Saint Elias Mountains () are a subgroup of the Pacific Coast Ranges, located in southeastern Alaska in the United States, Southwestern Yukon and the very far northwestern part of British Columbia in Canada. The range spans Wrangell-St. Elias National Park and Preserve in the United States and Kluane National Park and Reserve in Canada and includes all of Glacier Bay National Park in Alaska. In Alaska, the range includes parts of the city/borough of Yakutat and the Hoonah-Angoon and Valdez-Cordova census areas. This mountain range is named after Mount Saint Elias, which in turn was named in 1741 by the Danish-born Russian explorer Vitus Bering. Geology The Saint Elias Mountains form the highest coastal mountain range on Earth. It formed due to the subduction of the Yakutat microplate underneath the North American Plate. The Yakutat microplate is a wedge shaped oceanic plateau with a thickness of . Similar to the adjacent Pacific Plate, which has a crustal thickness of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Saint Elias
Mount Saint Elias (Was'eitushaa also designated Boundary Peak 186), the second-highest mountain in both Canada and the United States, stands on the Yukon and Alaska border about southwest of Mount Logan, the highest mountain in Canada. The Canadian side of Mount Saint Elias forms part of Kluane National Park and Reserve, while the U.S. side of the mountain is located within Wrangell-St. Elias National Park and Preserve. History and features The name of the mountain in Tlingit, ''Yasʼéitʼaa Shaa'' or ''Was'eitushaa'', means "mountain behind Icy Bay"; the Yakutat Tlingit occasionally call it ''Shaa Tlein'' "Big Mountain". It is one of the most important crests of the Kwaashkʼiḵwáan clan, who used it as a guide during their journey down the Copper River. Mount Fairweather at the apex of the British Columbia and Alaska borders at the head of the Alaska Panhandle is known as ''Tsalx̱aan''; legend states that this mountain and ''Yasʼéitʼaa Shaa'' (Mt. St. Elias) or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yakutat Block
The Yakutat Block is a terrane in the process of accreting to the North American continent along the south central coast of Alaska. It has been displaced about northward since the Cenozoic along the Queen Charlotte-Fairweather fault system. The block subducts between this fault system and the Alaska-Aleutian Subduction Zone. The thickness of the Yakutat Block varies, ranging from approximately 15 km in the west to 30 km in the east. The Yakutat Block is bounded on the northeast by the Fairweather Fault, and on the north by a system of thrust and possibly strike-slip faults in the Chugach Mountains and Saint Elias Mountains. The Yakutat Block is bounded on its southwest side by an as yet undefined underwater geologic feature known as the Transition Zone. Global Positioning System (GPS) measurements indicate that the Yakutat block has a distinctive velocity relative to both the Pacific Plate and the North American Plate. Thus it appears to be a terrane in the process o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malaspina Glacier
__NOTOC__ The Malaspina Glacier () in southeastern Alaska is the largest piedmont glacier in the world. Situated at the head of the Alaska Panhandle, it is about wide and long, with an area of some , approximately the same size as the state of Rhode Island. Name The Lingít name translates to Big Glacier. The colonial name for the glacier is in honor of Alessandro Malaspina, a Tuscan explorer in the service of the Spanish Navy, who visited the region in 1791. In 1874, W. H. Dall of the United States Coast Survey bestowed the name "Malaspina Plateau" on it, not realizing its true geological character. Geography The Malaspina Glacier actually comprises Seward Glacier, Agassiz Glacier, and Marvine/Hayden Glacier, which converge as they spill out from the Saint Elias Mountains onto the coastal plain facing the Gulf of Alaska between Icy Bay and Yakutat Bay. Officially, these three glaciers are classified independently, such that Malaspina Glacier does not technically exist. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Vancouver
Mount Vancouver is the 15th highest mountain in North America. Its southern side lies in Glacier Bay National Park and Preserve at the top of the Alaska panhandle, while its northern side is in Kluane National Park and Reserve in the southwestern corner of Yukon, Canada. Mount Vancouver has three summits: north, middle, and south, with the middle summit being the lowest. The south summit, Good Neighbor Peak at , straddles the international border while the north summit is slightly higher at . The mountain was named by William Healey Dall in 1874 after George Vancouver, who explored the southeast coast of Alaska from 1792 to 1794. Notable Ascents *1949 ''North Buttress'' (northwest ridge): FA of mountain by William Hainsworth, Alan Bruce-Robertson, Bob McCarter, Noel Odell; with Walter Wood in support. *1975 ''Northeast Ridge'' (to north peak), FA by Cliff Cantor, Bob Dangel, Paul Ledoux, Rob Milne, Hal Murray, Bob Walker, John Yates and Barton DeWolf. *1977 ''West Face'', FA b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kluane National Park
Kluane National Park and Reserve (; ) are two protected areas in the southwest corner of the territory of Yukon. The National Park Reserve was set aside in 1972 to become a national park, pending settlement of First Nations land claims. It covered an area of . When agreement was reached with the Champagne and Aishihik First Nations over an eastern portion of the Reserve, that part—about —became a national park in 1993, and is a unit of the national park system administered co-operatively with Parks Canada. The larger western section remains a Reserve, awaiting a final land claim settlement with the Kluane First Nation. The park borders British Columbia to the south, while the Reserve borders both British Columbia to the south, and the United States (Alaska) to the south and west. The Reserve includes the highest mountain in Canada, Mount Logan () of the Saint Elias Mountains. Mountains and glaciers, including Donjek Glacier, dominate the park's landscape, covering 83% of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seward Glacier
Seward is the name of: People Surname * Seward (surname) Middle name * William Seward Burroughs I (1857–1898), inventor of adding machine *William S. Burroughs (1914–1997), American novelist, poet, essayist and spoken word performer * John Seward Johnson II (1930–2020), American sculptor * William S. Burroughs, Jr. (1947–1981), author and son of the above First name * Seward Collins (1899–1952), publisher of ''The American Review'', prominent pre–World War II proponent of fascism * Seward Smith, American politician, associate justice of the Dakota Territory Supreme Court Places United States Counties * Seward County, Kansas * Seward County, Nebraska Cities and towns * Seward, Alaska * Seward, Illinois * Seward Township, Kendall County, Illinois * Seward Township, Winnebago County, Illinois * Seward, Kansas * Seward Township, Minnesota * Seward, Nebraska * Seward, New York * Seward, North Carolina * Seward, Pennsylvania Others * Seward Highway, Alaska * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bagley Icefield
The Bagley Icefield (also called Bagley Ice Valley) in southeastern Alaska is the second largest nonpolar icefield in North America. It was named after James W. Bagley, a USGS topographic engineer who developed the Bagley T-3 camera and mapped Alaska prior to World War I. At 200 km (127 mi) long, 10 km (6 mi) wide, and up to 1 km (3,000 ft) thick, it covers most of the core of the Saint Elias Mountains and part of the Chugach Mountains. It nourishes dozens of valley glaciers that drain down both sides of the range, including the Tana, Miles, and Guyot glaciers. The area of the combined Bagley Icefield and Bering Glacier System, including tributaries, is 5,200 km² (1,900 sq mi). 19th-century explorers attempting to climb Mt. St. Elias, including Luigi Amedeo, Duke of the Abruzzi, who successfully made the first ascent in 1897, did not recognize that the huge glacier now named Bagley Icefield actually forms the upper reaches of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imbrication (sedimentology)
In sedimentology, imbrication is a primary depositional Fabric (geology), fabric consisting of a preferred orientation of clasts such that they overlap one another in a consistent fashion, rather like a run of toppled dominoes. Imbrication is observed in Conglomerate (geology), conglomerates and in some volcaniclastic deposits. Types : In conglomerates the shape of many clasts can be approximated to an ellipsoid, with a long axis (A), an intermediate axis (B) and a short axis (C). * ''A-axis imbrication'' where the long axes of the clasts are oriented parallel to the flow direction. This fabric is characteristic of clasts carried in suspension and this is only preserved in the case of a fast-waning flow in which the clasts are deposited without any significant rolling. This fabric is typical of conglomerates at the base of turbidite beds but is also occasionally observed in alluvial fan deposits reworked by flash floods * ''AB-plane imbrication'' where the long axes of the clast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yakutat Icefield
Yakutat may refer to: Geography *Yakutat, Alaska, a unified city-borough in Alaska *Yakutat Bay, a bay on the coast of Alaska * Yakutat Airport, a state-owned public-use airport in Alaska in the United States * Yakutat Army Airfield, a former United States Army airfield which was redeveloped into the current airport * Yakutat Colony, a former Russian penal colony on the U.S. National Register of Historic Places * Yakutat Glacier, Glacier in Alaska Ships * , a United States Navy seaplane tender in commission from 1944 to 1946 * , later WHEC-380, a United States Coast Guard cutter in commission from 1948 to 1971 Other uses *Yakutat Block The Yakutat Block is a terrane in the process of accreting to the North American continent along the south central coast of Alaska. It has been displaced about northward since the Cenozoic along the Queen Charlotte-Fairweather fault system. The ..., a fragment of the Earth's crust in the process of accreting to the North American continent alon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southcentral Alaska
Southcentral Alaska (), also known as the Gulf Coast Region,Alaska Department of Commerce, Community, and Economic Development, Northern Opportunity Alaska's Economic Development Strategy, 2016, at 84 (Alaska 2016). Accessed June 1, 2023. https://www.commerce.alaska.gov/web/portals/0/pub/CEDS/2017-2022-Statewide-CEDS.pdf . is the portion of the U.S. state of Alaska consisting of the shorelines and uplands of the central Gulf of Alaska. More than half of the state's entire population lives in this region, concentrated in and around the city of Anchorage. The region is Alaska’s best-connected region, with the Port of Anchorage, Ted Stevens, Anchorage International Airport, and the Alaska Railroad servicing the area. The area includes Cook Inlet, the Matanuska-Susitna Valley, the Kenai Peninsula, Prince William Sound, and the Copper River Valley. Tourism, fisheries, and petroleum production are important economic activities. Cities The major city is Anchorage. Other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska Range
The Alaska Range is a relatively narrow, mountain range in the Southcentral Alaska, southcentral region of the U.S. state of Alaska, from Lake Clark at its southwest endSources differ as to the exact delineation of the Alaska Range. ThBoard on Geographic Namesentry is inconsistent; part of it designates Iliamna Lake as the southwestern end, and part of the entry has the range ending at the Telaquana and Neacola Rivers. Other sources identify Lake Clark, in between those two, as the endpoint. This also means that the status of the Neacola Mountains is unclear: it is usually identified as the northernmost subrange of the Aleutian Range, but it could also be considered the southernmost part of the Alaska Range. to the White River (Yukon), White River in Canada's Yukon Territory in the southeast. Denali, the highest mountain in North America, is in the Alaska Range. The range is part of the American Cordillera. The Alaska Range is one of the highest mountain ranges in the world, afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
