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Topic: Intermontane


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In the News (Fri 18 Dec 09)

  
  Terrestrial Ecoregions -- Sayan Intermontane steppe (PA0815)
The Sayan Intermontane Steppe ecoregion is a broad expanse of grasslands and shrublands surrounded on all sides by a mountain forest.
This steppe ecoregion lies in a large depression in the land known as the Tuva Intermontane Depression.
The Sayan Intermontane Steppe represents a transition zone, with species both from the Kazakh steppe zone to the west and Mongolia to the east.
www.nationalgeographic.com /wildworld/profiles/terrestrial/pa/pa0815.html   (369 words)

  
 Landscape and the intermontane Northwest: an environmental history.
Description: Traces the natural and cultural processes involved in shaping the environment in the intermontane northwest from the Indian period of domination to the present.
Emphasizes the increasing influence of humans as modifiers of landscapes and ecosystems, especially with the coming of the market system to the region and the onset of the industrial era.
Focuses on the unique aspects of ecological change in the intermontane region: the very recent extension of the market system to the area; and the very rapid expansion of human-induced environmental disturbance over very extensive areas in a very brief span of time.
www.treesearch.fs.fed.us /pubs/6224   (327 words)

  
 HA 730-Northern Rocky Mountains intermontane basins regional aquifer system text
The Northern Rocky Mountains intermontane basins regional aquifer system extends into Montana; that part of the system is described in Segment 8 (Chapter I) of this Atlas.
Unconsolidated-deposit aquifers are the most important aquifers in the intermontane basins, but in places, the underlying Pliocene and younger basaltic rocks or Miocene basaltic rocks compose important aquifers (fig.
Information pertaining to ground-water conditions in the Northern Rocky Mountains intermontane basins is summarized by county in table 6.
capp.water.usgs.gov /gwa/ch_h/H-text11.html   (1744 words)

  
  Geological Regions
Several foreign blocks were amalgamated into 2 large composite fragments (Intermontane and Insular belts) which, as a result of this collision, were then accreted successively to North America.
The Omineca Crystalline Belt embraces the region where the Intermontane composite fragment collided with and partly overrode the Eastern Belt.
Rocks of the outer part of the continental margin and the adjacent Intermontane fragment were compressed, metamorphosed and displaced into stacked sheets transported mainly eastward, but also partly westward, from a central metamorphic core zone.
www.thecanadianencyclopedia.com /index.cfm?PgNm=TCE&Params=A1SEC821212   (701 words)

  
 [No title]
Very little of the Intermontane rocks are exposed at the surface in Washington because ______.
The Intermontane Superterrane was accreted to North America during the ________.
Intermontane rocks began to melt because of thrust faulting.
www.geophys.washington.edu /~tsclasses/301/practice_midterm_301.doc   (1317 words)

  
 The Omineca Episode (180-115 million years ago)
The approach of the Intermontane Volcanic Islands to the ancient margin of the Pacific Northwest.
In the diagram at right, the Intermontane Belt (in brown) and the floor of the Slide Mountain Ocean (in gray) are pushed up onto the ancient margin of North America.
After the Intermontane Islands collided and welded to the continent, the edge of the continent moved to the west.
www.washington.edu /burkemuseum/geo_history_wa/The%20Omineca%20Episode.htm   (1655 words)

  
 pg 004: Geology of the Marathon region, Texas Publication 6445288
These intermontane areas are either bolsons (structural depressions filled by mountain waste) or destructional plains that slope upward as pediments toward the mountain masses from which they have been carved.
The intermontane plains are mostly depressed areas filled by waste carried down from the mountains.
Similar parallel mountain ranges and intermontane lowlands are present southwest of the Quitman and Eagle Mountains, on the Mexican side of the Rio Grande, where they extend from the vicinity of El Paso southeastward past the great bend of the river and on into the interior of the State of Chihuahua (pl. 22, fig.
www.lib.utexas.edu /books/landscapes/publications/txu-oclc-6445288/txu-oclc-6445288-b-004-print.html   (938 words)

  
 intermontane - Search Results - MSN Encarta
Intermontane Basins and Plateau : illustrations: Regions of the United States
Satellite view of the Sayan Intermontane steppe along the Yenisey River, Russia Photograph by USGS...
Eastern Lowlands, Chaco, Cloud Forest and Intermontane Valleys : THE REPUBLIC OF BOLIVIA THE EASTERN LOWLANDS AND CHACO, CLOUD FOREST, ARID INTERMONTANE VALLEYS
encarta.msn.com /intermontane.html   (188 words)

  
 Geomorphology: Chapter 4 Plate F-17
In such a complicated mountainous region, numerous intermontane basins like the one shown in the Landsat scene are being filled by alluvial deposits derived from erosion of surrounding mountains.
Figure F-17.2 illustrates the stream beds that consist of coarse sediment, which are typical of arid and semiarid source areas where runoff tends to be an infrequent but violent event.
Intermontane basins are commonly the sites of playa lakes and their sedimentary counterparts (F).
disc.gsfc.nasa.gov /geomorphology/GEO_4/GEO_PLATE_F-17.shtml   (820 words)

  
 Birding Bolivia - The Chaco Cloud Forest and Highlands
Bolivia: Eastern Lowlands, Chaco, Cloud Forest and Intermontane Valleys
THE EASTERN LOWLANDS AND CHACO, CLOUD FOREST, ARID INTERMONTANE VALLEYS
Bolivia stretches across the widest part of the Andean mountain chain and is one of the poorest, highest and most isolated of Latin American republics.
www.birding-in-peru.com /chaco-highlands-bolivia.htm   (1172 words)

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