History of Sedimentation on the Voring Plateau (Norwegian Sea) during the Last 25 ka

Levitan, M. A.; Murdmaa, I. O.; Иванова, Е. В.; Bourtman, M.; Krupskaya, V. V.; Akhrimenko, N.; Eroshenko, D. V.

doi:10.1007/s10987-005-0047-3

Cited by 7 publications

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“…When comparing the CARs of Norwegian CWC reefs with adjacent sedimentary environments, the observed rates exceed the values of the shelf (Knies et al ., ; Aagaard‐Sørensen et al ., ; Cabedo‐Sanz et al ., ), the Vøring plateau (Henrich et al ., ; Kassens, ; Andruleit, ; Jensen, ; Levitan et al ., ), the deep slope (Kassens, ; Wolf, ) and the deep sea (Kassens, ; Henrich, ; Weinelt, ; Andruleit, ; Jensen, ) by nearly one order of magnitude and more (the comparison is based exclusively on the Holocene sequences within these cores; Table S2; Fig. ).…”

Section: Discussionmentioning

confidence: 99%

“…When comparing the CARs of Norwegian CWC reefs with adjacent sedimentary environments, the observed rates exceed the values of the shelf (Knies et al, 2003;Aagaard-Sørensen et al, 2010;Cabedo-Sanz et al, 2013), the Vøring plateau (Henrich et al, 1989;Kassens, 1990;Andruleit, 1995;Jensen, 1998;Levitan et al, 2005), the deep slope (Kassens, 1990;Wolf, 1991) and the deep sea (Kassens, 1990;Henrich, 1992;Weinelt, 1993;Andruleit, 1995;Jensen, 1998) by nearly one order of magnitude and , Jostedalsbreen (Nesje et al, 2001) and Western Jotunheimen (Matthews et al, 2000;redrawn from Nesje et al, 2005; horizontal dotted lines indicate present position of glacier front). Additionally, available cold-water coral ages from the Norwegian Sea from various sources are shown (see Table S1 for references).…”

Section: Carbonate Accumulation Ratesmentioning

confidence: 90%

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Aggradation and carbonate accumulation of Holocene Norwegian cold‐water coral reefs

et al. 2015

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Cold‐water coral ecosystems present common carbonate factories along the Atlantic continental margins, where they can form large reef structures. There is increasing knowledge on their ecology, molecular genetics, environmental controls and threats available. However, information on their carbo‐nate production and accumulation is still very limited, even though this information is essential for their evaluation as carbonate sinks. The aim of this study is to provide high‐resolution reef aggradation and carbonate accumulation rates for Norwegian cold‐water coral reefs from various settings (sunds, inner shelf and shelf margin). Furthermore, it introduces a new approach for the evaluation of the cold‐water coral preservation within cold‐water coral deposits by computed tomography analysis. This approach allows the differentiation of various kinds of cold‐water coral deposits by their macrofossil clast size and orientation signature. The obtained results suggest that preservation of cold‐water coral frameworks in living position is favoured by high reef aggradation rates, while preservation of coral rubble prevails by moderate aggradation rates. A high degree of macrofossil fragmentation indicates condensed intervals or unconformities. The observed aggradation rates with up to 1500 cm kyr−1 exhibit the highest rates from cold‐water coral reefs so far. Reef aggradation within the studied cores was restricted to the Early and Late Holocene. Available datings of Norwegian cold‐water corals support this age pattern for other fjords while, on the shelf, cold‐water coral ages are reported additionally from the early Middle Holocene. The obtained mean carbonate accumulation rates of up to 103 g cm−2 kyr−1 exceed previous estimates of cold‐water coral reefs by a factor of two to three and by almost one order of magnitude to adjacent sedimentary environments (shelf, slope and deep sea). Only fjord basins locally exhibit carbonate accumulation rates in the range of the cold‐water coral reefs. Furthermore, cold‐water coral reef carbonate accumulation rates are in the range of tropical reef carbonate accumulation rates. These results clearly suggest the importance of cold‐water coral reefs as local, maybe regional to global, carbonate sinks.

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