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Geology of the Greenland-Iceland Ridge in the Denmark Strait

  • Birger Larsen
Part of the Nato Conference Series book series (NATOCS, volume 8)

Abstract

The continental shelf of East Greenland and the insular shelf of Iceland almost merge in the Denmark Strait, forming the Greenland-Iceland Ridge. This is the western part of the Scotland-Iceland-Greenland aseismic ridge, which is an important oceanographic threshold between the Norwegian Sea and the Atlantic Ocean. Roughly half of the inflow of cold arctic water into the Atlantic takes place through the Denmark Strait (Coachman and Aagaard, 1974). This flow is closely related to the warm Norwegian Stream entering the Norwegian Sea south of Iceland. Changes in the cross section in the Denmark Strait may thus imply important changes in oceanography and climate of northern Europe and Greenland (Eldholm and Thiede, 1980). The Scotland-Iceland-Greenland Ridge joins the lower Tertiary volcanic areas of East Greenland, Iceland, the Faeroes and Northwest Scotland (the Brito-Arctic volcanic province). This lead to the suggestion long ago that the ridge was a foundered landbridge of volcanic origin (Holmes, 1918). In the context of seafloor spreading the ridge has been regarded as the trace of the Iceland mantle plume (see Vogt et al., 1981 for references).

Keywords

Magnetic Anomaly Shelf Break Seafloor Spreading Acoustic Basement Central Volcano 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1983

Authors and Affiliations

  • Birger Larsen
    • 1
  1. 1.Institute for Applied GeologyTechnical University of DenmarkLyngbyDenmark

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