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Opportunities and Priorities in Arctic Geoscience (1991) / Chapter Skim
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2 Physiography
Pages 7-8

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From page 7...
... Islands on the outer Barents-Kara Shelf and on the Laptev-East Siberian-Chukchi Shelf are at present our principal source of geologic framework and history of these broad continental shelves. ~ complex of ridges, small basins of oceanic depth, and an active spreading center that is propagating into the Eurasian continent comprise the deep Arctic Ocean Basin, which lies at the heart of the north polar region (Perry and Fleming, 1986; Johnson et al., 1990~.
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From page 8...
... land. Ridge and plateau summits in the borderland are subhorizontal or gently sloping and lie mostly between 280 m and 1,500 m below sea level.
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Key Terms

  • below sea
  • ocean basin
  • sea level
  • mendeleev ridge
  • lomonosov ridge

  • entire arctic
  • eurasian continent
  • sedimentary basins
  • ridge lie
  • continental shelves

  • chukchi continental
  • continent comprise
  • precambrian ages
  • plateau summits
  • oceanic depth

  • crest lies
  • arlis ridge
  • polar region
  • slope deposits
  • basin oceanography

  • bathymetrically complex
  • deep arctic
  • larger amerasia
  • crustal depths
  • major influence

  • summit elevations
  • ridge merges
  • continental shelf
  • coastal plains
  • continental crust


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