Mount Jarvis is an eroded shield volcano in the

Wrangell Mountains The Wrangell Mountains are a high mountain range of eastern Alaska in the United States. Much of the range is included in Wrangell-Saint Elias National Park and Preserve. The Wrangell Mountains are almost entirely volcanic in origin, and they i ...

of eastern

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 is located in Wrangell-Saint Elias National Park about east of the summit of

Mount Wrangell Mount Wrangell, in Ahtna K’ełt’aeni or K’ełedi when erupting, is a massive shield volcano located in Wrangell-St. Elias National Park and Preserve in southeastern Alaska, United States. The shield rises over above the Copper River to it ...

. The mountain sits at the northeastern edge of the massive ice-covered shield of Wrangell, rising nearly above it in a spectacular series of cliffs and

icefall An icefall is a portion of certain glaciers characterized by relatively rapid flow and chaotic crevassed surface, caused in part by gravity. The term ''icefall'' is formed by analogy with the word ''waterfall'', which is a similar phenomenon of ...

s. When seen from above, Mount Jarvis is distinctly

dumbbell The dumbbell, a type of free weight, is a piece of equipment used in weight training. It can be used individually or in pairs, with one in each hand. History The forerunner of the dumbbell, halteres, were used in ancient Greece as lifting ...

-shaped, with two prominent peaks connected by a narrower ridge. The mountain's main summit is , making it one of numerous

thirteener In mountaineering in the United States, a thirteener (abbreviated 13er) is a mountain that exceeds above mean sea level, similar to the more familiar "fourteeners," which exceed . In most instances, "thirteeners" refers only to those peaks betwee ...

s (peaks between 13,000 and 13,999 feet in elevation) in Alaska. The second summit is located about to the north-northwest, reaching with over of prominence above the connecting saddle, thus qualifying it as an independent peak on the list of thirteeners as well. The entire summit area including both peaks and the ridge is covered in

glacial ice A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as ...

. The steep, rocky eastern and western faces of Mount Jarvis form

headwall In physical geography and geology the headwall of a glacial cirque is its highest cliff. The term has been more broadly used to describe similar geomorphic features of non-glacial origin consisting of a concave depression with convergent slopes ty ...

s above the

cirques A (; from the Latin word ') is an amphitheatre-like valley formed by glacial erosion. Alternative names for this landform are corrie (from Scottish Gaelic , meaning a pot or cauldron) and (; ). A cirque may also be a similarly shaped landform ...

of the Jacksina Glacier and Copper Glacier, which flow northward out of the Wrangell Mountains. Mount Jarvis was named in 1903 by F. C. Schrader, a

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, a ...

geologist, for Lt.

David H. Jarvis David Henry Jarvis (August 24, 1862 – June 23, 1911) Bagley, pp 416–417Wickersham, p 247 was a captain in the United States Revenue Cutter Service. During the harsh winter of 1897–1898, Jarvis, then serving as a first lieutenant abo ...

of the U. S. Revenue Cutter Service, who led the

Overland Relief Expedition The Overland Relief Expedition, also called the Alaska Relief Expedition or Point Barrow-Overland Relief Expedition, was an expedition in the winter of 1897–1898 by officers of the United States Revenue Cutter Service to save the lives of 265 whal ...

to aid a whaling fleet trapped in

Arctic Ocean The Arctic Ocean is the smallest and shallowest of the world's five major oceans. It spans an area of approximately and is known as the coldest of all the oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, a ...

ice off

Point Barrow Point Barrow or Nuvuk is a headland on the Arctic coast in the U.S. state of Alaska, northeast of Utqiaġvik (formerly Barrow). It is the northernmost point of all the territory of the United States, at , south of the North Pole. (The nor ...

in 1897–98. __TOC__

References

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External links

* {{DEFAULTSORT:Jarvis, Mount Shield volcanoes of the United States Subduction volcanoes Volcanoes of Alaska Mountains of Alaska Landforms of Copper River Census Area, Alaska North American 4000 m summits, Mount Jarvis Mountains of Unorganized Borough, Alaska Volcanoes of Unorganized Borough, Alaska Pleistocene shield volcanoes

See also

References

External links