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Sediment Distribution in the Norwegian-Greenland Sea

1974; Geological Society of America; Volume: 85; Issue: 11 Linguagem: Inglês

10.1130/0016-7606(1974)85 2.0.co;2

1943-2674

Olav Eldholm, C. C. Windisch,

Geology and Paleoclimatology Research

Research Article| November 01, 1974 Sediment Distribution in the Norwegian-Greenland Sea OLAV ELDHOLM; OLAV ELDHOLM 1Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York 10964 Search for other works by this author on: GSW Google Scholar CHARLES C. WINDISCH CHARLES C. WINDISCH 1Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York 10964 Search for other works by this author on: GSW Google Scholar Author and Article Information OLAV ELDHOLM 1Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York 10964 CHARLES C. WINDISCH 1Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York 10964 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1974) 85 (11): 1661–1676. https://doi.org/10.1130/0016-7606(1974)85 2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation OLAV ELDHOLM, CHARLES C. WINDISCH; Sediment Distribution in the Norwegian-Greenland Sea. GSA Bulletin 1974;; 85 (11): 1661–1676. doi: https://doi.org/10.1130/0016-7606(1974)85 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract An isopach map of the total sediment thickness over acoustic basement in the Norwegian-Greenland Sea is constructed on the basis of 44,000 km of seismic-reflection profiler data and available seismic-refraction information. The map shows a regional first-order deposition pattern that is believed to result from development of the ocean by sea-floor spreading. Where the pattern breaks down, the proximity to the continents governs the sediment distribution which also is locally complex. Most of the sediment in the Norwegian-Greenland Sea is suggested to be of terrigenous origin. Buried marginal basement highs exist in three locations near the base of the continental slope and have acted as barriers for the seaward flow of the terrigenous material during the early stage of development of the ocean. The oceanic basement surface is intersected by several fracture zones that are expressed as a linear series of basement peaks and sediment-filled troughs. The data are compatible with shifts of the active spreading axis south of the Jan Mayen Fracture Zone. An extinct ridge axis in the Norwegian Basin is defined by a continuous sediment-filled rift valley surrounded by partly buried axial mountains. A thick continuous sequence of relatively transparent sediments is located on the eastern rise of the Icelandic Plateau and on the northern flank of the Faeroe-Iceland Ridge; however, the prominent north-south trend in the bathymetry at the eastern boundary of the Icelandic Plateau is not reflected in the basement topography. Portions of the Icelandic Plateau are underlain by a smooth acoustic basement which is suggested to consist of volcanic debris. Erosion near the base of the continental slope and at the fracture zones may reflect bottom-water flow. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.