The Sula Reef Complex, Norwegian shelf |
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Authors: | André Freiwald Veit Hühnerbach Bjørn Lindberg John Brodie Wilson John Campbell |
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Institution: | 1. Institut für Pal?ontologie, Universit?t Erlangen, Loewenichstr. 28, 91054, Erlangen, Germany 2. Challenger Division for Seafloor Processes, Southampton Oceanography Centre, European Way, Waterside Campus, SO14 3ZH, Southampton, U.K. 3. Department of Geology, University of Troms?, Dramsveien 201, N-9037 Troms?, Norway 4. Geology Department, Royal Holloway University of London, TW20 0EX, Egham, Surrey, U.K.
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Abstract: | Summary Cool-water carbonates in the aphotic zone of deep shelf and continental margin settings in the Northeast Atlantic are produced
by the deep-water coral reefs withLophelia pertusa as the major framework builder. Through a compilation of side scan sonar, airgun and manned submersible surveys from several
cruises to the mid-Norwegian Sula Reef Complex (SRC), the facies pattern and zonation of one of the largest deep-water reefs
in the Northeast Atlantic is described in relation to the overall seabed topography. The late glacial to early postglacial
iceberg scour on the crest and shoulder of the Sula Ridge provides settling ground for the scleractinian corals already in
the early Holocene. Since then coral growth continues until today but was supposed to be disturbed by an environmental hazard,
the so-called second Storegga event. The distinct distribution pattern of individualLophelia reefs on the Sula Ridge has stimulated a discussion on intrinsic environmental controls such as the bentho-pelagic coupling
and the alternative hydrocarbon-based nutrition hypothesis. |
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Keywords: | Deep-water coral reef Lophelia Porifera Sularidge Cool water carbonate Norwegian shelf Holocene |
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