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Mount Hood





Mountain Information

  Name Mount Hood
  Photo MtHood TrilliumLakejpg
  Caption Mount Hood reflected in Trillium Lake
  Location Oregon, USA
  Range Cascade Range
  Prominence {{cite web
  Url http://wwwpeakbaggercom/peakaspxpid=2382
  Title Mount Hood, Oregon, 11,239 feet, 3426 meters


  Topographic Map USGS Mount Hood South <small>45121-C6</small>
  Type Stratovolcano
  Volcanic Arc/Belt Cascade Volcanic Arc
  Age &lt 500,000 years {{cite web
  Url http://pubsusgsgov/fs/2000/fs060-00/
  Title Mount Hood&mdashHistory and Hazards of Oregon's Most Recently Active Volcano
  Publisher USGS and USFS
  Work US Geological Survey Fact Sheet 060-00
  Date June 13 2005
  Accessdate 2007-01-16


  Last Eruption 1790s
  First Ascent 1857-07-11 by Henry Pittock , W Lymen Chittenden, Wilbur Cornell, and the Rev TA Wood {{cite web
  Url http://glaciersresearchpdxedu/oregonphp#fun_facts
  Title Glaciers of Oregon
  Publisher Departments of Geology and Geography at Portland State University
  Accessdate 2007-02-24


  Last McNeil
  First Fred H
  Year 1937
  Title Wy'East The Mountain, A Chronicle of Mount Hood
  Publisher Metropolitan Press
  Id ASIN B000H5CB6E, ASIN B00085VH7W


  Easiest Route Rock and glacier climb


Mount Hood (called '''Wy'east''' by the Multnomah Tribe ), is a Stratovolcano in the Cascade Volcanic Arc in northern Oregon , in the Pacific Northwest region of the United States . It is located about 50 miles (80 km) east-southeast of the city of Portland , on the border between Clackamas and Hood River counties.



GEOLOGY

The glacially eroded summit area consists of several Andesitic or Dacitic Lava Dome s; Pleistocene collapses produced avalanches and Lahar s (rapidly moving mudflows) that traveled across the Columbia River to the north. The eroded volcano has had at least four major eruptive periods during the past 15,000 years. The last three occurred within the past 1,800 years from vents high on the southwest flank and produced deposits that were distributed primarily to the south and west along the Sandy and Zigzag Rivers. The last eruptive period took place around 170 to 220 years ago, when dacitic lava domes, pyroclastic flows and mudflows were produced without major explosive eruptions. The prominent Crater Rock just below the summit is believed to be the remnants of a Dacite dome from the last eruptive period.



GLACIERS



The surface area of the glaciers totals about 145 million square feet (5.2 square miles) and contains a volume of about 12.3 billion cubic feet (0.084 cubic miles).
Eliot Glacier is the largest by volume at 3.2 billion cubic feet, and has the thickest depth measured by ice radar at 361 feet. The largest surface area is the Coe-Ladd Glacier system at 23.1 million square feet.

  "http://wwwinformationdelightinfo/information/entry/Palmer_Glacier" class="copylinks">Palmer align="right" 14 align="right" 007 headwaters of the Salmon River
  "http://wwwinformationdelightinfo/information/entry/Coalman_Glacier" class="copylinks">Coalman (or "Coleman") align="right" 09 align="right" 004 <!-- sum of entries in White River and Zigzag River watersheds --> located between between Crater Rock and the summit
  White River Align "right" 58 align="right" 03 feeds the White River
  Newton Clark Align "right" 214 align="right" 14 source of the East Fork Hood River
  Eliot Align "right" 181 align="right" 32 source of Tilly Jane Creek and Eliot Branch, tributaries of Middle Fork Hood River
  Langille Align "right" 43 align="right" 03 in Hood River watershed
  Coe Align "right" 134 align="right" 19 source of Coe Branch, a tributary of Middle Fork Hood River
  Ladd Align "right" 97 align="right" 09 source of McGee Creek, a tributary of West Fork Hood River
  Sandy Align "right" 128 align="right" 008 feeds Muddy Fork, a Tributary of the Sandy River
  Reid Align "right" 81 align="right" 06 feeds the Sandy River
  "http://wwwinformationdelightinfo/information/entry/Zigzag_Glacier" class="copylinks">Zigzag align="right" 83 align="right" 06 feeds the Zigzag River
  ''(total)'' Align "right" ''1451'' align="right" ''123'' colspan="0" &nbsp