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Benson Glacier (Oregon)
Benson Glacier is in the U.S. state of Oregon. The glacier is situated in the Wallowa Mountains at an elevation generally above on the eastern slopes Glacier Peak, a subpeak of Eagle Cap. The glacier was named in honor of Frank W. Benson, former Governor of Oregon during an expedition in 1914. Benson Glacier is estimated to be long. Due to its small size, researchers have frequently questioned whether it was a glacier or a perennial snowfield. Areal photography taken in 2007 showed crevasses on the surface, confirming that it does flow and is a true glacier. It is not expected to remain a true glacier much longer, however, due to climate change. Benson Glacier is the last remaining remnant of Wallowa Glacier which extended , creating the lateral moraines that created Wallowa Lake during the Last Glacial Maximum. Its ice is estimated to have been in places. The West Fork of the Wallowa River The Wallowa River is a tributary of the Grande Ronde River, approximately lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallowa Mountains
The Wallowa Mountains () are a mountain range located in the Columbia Plateau of northeastern Oregon in the United States. The range runs approximately northwest to southeast in southwestern Wallowa County and eastern Union County between the Blue Mountains to the west and the Snake River to the east. The range is sometimes considered to be an eastern spur of the Blue Mountains, and it is known as the "Alps of Oregon". Much of the range is designated as the Eagle Cap Wilderness, part of the Wallowa–Whitman National Forest. Geography The range is drained by the Wallowa River, which flows from the north side of the mountains, and its tributary the Minam River, which flows through the west side of the range. The Imnaha River flows from the east side of the range. The highest point in the range is Sacajawea Peak, which is above sea level. Sacajawea is the sixth highest mountain in Oregon and the state's highest peak outside of the Cascade Range. Geology Many geologists b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallowa County, Oregon
Wallowa County () is the northeastern most county in the U.S. state of Oregon. As of the 2020 census, the population was 7,391, making it Oregon's fifth-least populous county. Its county seat is Enterprise. According to ''Oregon Geographic Names'', the origins of the county's name are uncertain, with the most likely explanation being it is derived from the Nez Perce term for a structure of stakes (a weir) used in fishing. An alternative explanation is that ''Wallowa'' is derived from a Nez Perce word for "winding water". The journals of Lewis and Clark Expedition record the name of the Wallowa River as ''Wil-le-wah''. Wallowa County is part of the eight-county definition of Eastern Oregon. History In 1871, the first white settlers came to the area, crossing the mountains in search of livestock feed in the Wallowa Valley. The county was established on February 11, 1887, from the eastern portion of Union County. Boundary changes occurred with Union County in 1890, 1900, and 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon
Oregon () is a state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idaho. The 42° north parallel delineates the southern boundary with California and Nevada. Oregon has been home to many indigenous nations for thousands of years. The first European traders, explorers, and settlers began exploring what is now Oregon's Pacific coast in the early-mid 16th century. As early as 1564, the Spanish began sending vessels northeast from the Philippines, riding the Kuroshio Current in a sweeping circular route across the northern part of the Pacific. In 1592, Juan de Fuca undertook detailed mapping and studies of ocean currents in the Pacific Northwest, including the Oregon coast as well as the strait now bearing his name. Spanish ships – 250 in as many years – would typically not land before reaching Cape M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier Peak (Oregon)
Glacier Peak is a mountain summit located in Union County, Oregon, US. Description Glacier Peak is located at the center of the Wallowa Mountains and is set within the Eagle Cap Wilderness, on land managed by Wallowa–Whitman National Forest. The peak is situated 2.6 miles northwest of Cusick Mountain, 0.5 mile southwest of Glacier Lake and 0.7 mile southeast of line parent Eagle Cap. Precipitation runoff from the mountain drains east into headwaters of the West Fork Wallowa River, and west into the East Fork Eagle Creek. Topographic relief is significant as the summit rises above Eagle Creek in less than one mile. On the north slope, a permanent snowfield called Benson Glacier is a relict of the Wallowa Glacier which carved the canyon of West Fork Wallowa River for almost 20 miles during the late Pleistocene.Charles G. Johnson (2004), ''Alpine and Subalpine Vegetation of the Wallowa, Seven Devils, and Blue Mountains'', USDA Forest Service, Pacific Northwest Region, p. 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eagle Cap
Eagle Cap ( is a mountain peak located in the Wallowa Mountains, Wallowa–Whitman National Forest, in the U.S. state of Oregon. The peak is in the Eagle Cap Wilderness and the Benson Glacier is along the east flank of the summit ridge. Its summit is the highest point in Union County References Gallery File:Glacier Lake, Eagle Cap Wilderness in the Wallowa-Whitman National Forest.jpg, Glacier Peak Glacier Peak or Dakobed (known in the Sauk-Suiattle dialect of the Lushootseed language as "Tda-ko-buh-ba" or "Takobia") is the most isolated of the five major stratovolcanoes (composite volcanoes) of the Cascade Volcanic Arc in the U.S state of ... (left) with Eagle Cap (right) from Glacier Lake File:THREE ALPINE LAKES IN EAGLE CAP WILDERNESS, Wallowa Whitman National Forest (23566179599).jpg, Aerial view of Glacier Peak in upper left, Eagle Cap shaded in upper right,Prospect Lake lower left, Glacier Lake to right. External links * Mountains of Oregon Landforms of Wallow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frank W
Frank or Franks may refer to: People * Frank (given name) * Frank (surname) * Franks (surname) * Franks, a medieval Germanic people * Frank, a term in the Muslim world for all western Europeans, particularly during the Crusades - see Farang Currency * Liechtenstein franc or frank, the currency of Liechtenstein since 1920 * Swiss franc or frank, the currency of Switzerland since 1850 * Westphalian frank, currency of the Kingdom of Westphalia between 1808 and 1813 * The currencies of the German-speaking cantons of Switzerland (1803–1814): ** Appenzell frank ** Argovia frank ** Basel frank ** Berne frank ** Fribourg frank ** Glarus frank ** Graubünden frank ** Luzern frank ** Schaffhausen frank ** Schwyz frank ** Solothurn frank ** St. Gallen frank ** Thurgau frank ** Unterwalden frank ** Uri frank ** Zürich frank Places * Frank, Alberta, Canada, an urban community, formerly a village * Franks, Illinois, United States, an unincorporated community * Franks, Misso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crevasses
A crevasse is a deep crack, that forms in a glacier or ice sheet that can be a few inches across to over 40 feet. Crevasses form as a result of the movement and resulting stress associated with the shear stress generated when two semi-rigid pieces above a plastic substrate have different rates of movement. The resulting intensity of the shear stress causes a breakage along the faces. Description Crevasses often have vertical or near-vertical walls, which can then melt and create seracs, arches, and other ice formations. These walls sometimes expose layers that represent the glacier's stratigraphy. Crevasse size often depends upon the amount of liquid water present in the glacier. A crevasse may be as deep as 45 metres and as wide as 20 metres. by |
Climate Change
In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to Earth's climate. The current rise in global average temperature is more rapid than previous changes, and is primarily caused by humans burning fossil fuels. Fossil fuel use, deforestation, and some agricultural and industrial practices increase greenhouse gases, notably carbon dioxide and methane. Greenhouse gases absorb some of the heat that the Earth radiates after it warms from sunlight. Larger amounts of these gases trap more heat in Earth's lower atmosphere, causing global warming. Due to climate change, deserts are expanding, while heat waves and wildfires are becoming more common. Increased warming in the Arctic has contributed to melting permafrost, glacial retreat and sea ice loss. Higher temperatures are also causin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Moraine
A moraine is any accumulation of unconsolidated debris (regolith and rock), sometimes referred to as glacial till, that occurs in both currently and formerly glaciated regions, and that has been previously carried along by a glacier or ice sheet. It may consist of partly rounded particles ranging in size from boulders (in which case it is often referred to as boulder clay) down to gravel and sand, in a groundmass of finely-divided clayey material sometimes called glacial flour. Lateral moraines are those formed at the side of the ice flow, and terminal moraines were formed at the foot, marking the maximum advance of the glacier. Other types of moraine include ground moraines (till-covered areas forming sheets on flat or irregular topography) and medial moraines (moraines formed where two glaciers meet). Etymology The word ''moraine'' is borrowed from French , which in turn is derived from the Savoyard Italian ("mound of earth"). ''Morena'' in this case was derived from Prove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallowa Lake
Wallowa Lake is a ribbon lake south of Joseph, Oregon, United States, at an elevation of . Impounded by high moraines, it was formed by a series of Pleistocene glaciers. On the south end of the lake is a small community made up of vacation homes, lodging, restaurants, as well as other small businesses. Wallowa Lake has been used for recreation since at least 1880. The Wallowa Lake State Park is at the southern tip of the lake. Geology and formation Wallowa Lake has been used in geology textbooks as an example of a lake dammed by moraines. These moraines begin well below the water's surface and climb to over above the lake. Before the glacial until compounded enough to form the moraines that currently surround the lake, a large alluvial fan was present in the valley. This fan was created by the Wallowa River transporting debris into the valley. The sediment left by the river was pushed by a series of glaciers that advanced north into the valley. As they pushed the debris, they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Last Glacial Maximum
The Last Glacial Maximum (LGM), also referred to as the Late Glacial Maximum, was the most recent time during the Last Glacial Period that ice sheets were at their greatest extent. Ice sheets covered much of Northern North America, Northern Europe, and Asia and profoundly affected Earth's climate by causing drought, desertification, and a large drop in sea levels. Based on changes in position of ice sheet margins dated via terrestrial cosmogenic nuclides and radiocarbon dating, growth of ice sheets commenced 33,000 years ago and maximum coverage was between 26,500 years and 19–20,000 years ago, when deglaciation commenced in the Northern Hemisphere, causing an abrupt rise in sea level. Decline of the West Antarctica ice sheet occurred between 14,000 and 15,000 years ago, consistent with evidence for another abrupt rise in the sea level about 14,500 years ago. Glacier fluctuations around the Strait of Magellan suggest the peak in glacial surface area was constrained to betw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallowa River
The Wallowa River is a tributary of the Grande Ronde River, approximately long, in northeastern Oregon in the United States. It drains a valley on the Columbia Plateau in the northeast corner of the state north of Wallowa Mountains. The Wallowa Valley was home to Chief Joseph's band of the Nez Perce Tribe. Chief Joseph asked the first white settlers to leave when they arrived in 1871. The U.S. government expelled the tribe and seized their property and livestock in 1877, when non-Indian farmers and ranchers wanted to settle the fertile Wallowa valley. The tribe was barred from returning to their homeland by the government after repeated petitions. The tribal members were shipped in unheated box cars to Indian Territory (now Oklahoma) to be placed in a prisoner-of-war camp never to see their home again. Course The river begins at the confluence of its east and west forks, which rise in southern Wallowa County, in the Eagle Cap Wilderness of the Wallowa–Whitman Nation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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