Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N
Sediment patterns derived from sediment sampling and acoustic subbottom profiling were mapped on the Reykjanes Ridge (North Atlantic) between 59°N and 60°N. Five discrete sediment echo patterns were distinguished and mapped on a regional scale. The prolonged and layered echo facies, which mainly ref...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
1996
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Online Access: | https://oceanrep.geomar.de/id/eprint/31414/ https://oceanrep.geomar.de/id/eprint/31414/1/1-s2.0-S0967063796000908-main.pdf https://doi.org/10.1016/S0967-0637(96)00090-8 |
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ftoceanrep:oai:oceanrep.geomar.de:31414 2023-05-15T16:48:11+02:00 Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N Lackschewitz, Klas Endler, R. Gehrke, Bettina Wallrabe-Adams, H.-J. Thiede, Jörn 1996 text https://oceanrep.geomar.de/id/eprint/31414/ https://oceanrep.geomar.de/id/eprint/31414/1/1-s2.0-S0967063796000908-main.pdf https://doi.org/10.1016/S0967-0637(96)00090-8 en eng Elsevier https://oceanrep.geomar.de/id/eprint/31414/1/1-s2.0-S0967063796000908-main.pdf Lackschewitz, K., Endler, R., Gehrke, B., Wallrabe-Adams, H. J. and Thiede, J. (1996) Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N. Deep Sea Research Part I: Oceanographic Research Papers, 43 (11-12). pp. 1683-1711. DOI 10.1016/S0967-0637(96)00090-8 <https://doi.org/10.1016/S0967-0637%2896%2900090-8>. doi:10.1016/S0967-0637(96)00090-8 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1996 ftoceanrep https://doi.org/10.1016/S0967-0637(96)00090-8 2023-04-07T15:23:32Z Sediment patterns derived from sediment sampling and acoustic subbottom profiling were mapped on the Reykjanes Ridge (North Atlantic) between 59°N and 60°N. Five discrete sediment echo patterns were distinguished and mapped on a regional scale. The prolonged and layered echo facies, which mainly reflect sediment filled basins on the ridge flanks, indicate deposition of predominantly fine-grained sediments deposited by the Iceland-Scotland Overflow Water. A combination of westward flowing currents spilling over the ridge crest due to the Coriolis force together with the existing morphology probably caused the N-S trending facies distribution pattern on the northwest flank. Furthermore, the modern surface sediment distribution is controlled by biological productivity, which is closely related to the mixing zone of cold subpolar surface water masses and the warm North Atlantic Current, and bottom water transport processes. The effect of bottom current transport is reflected in the pattern of settling velocity and sediment grain size. The clay mineral composition indicates that most of the fine-grained material is supplied predominantly from the Icelandic province by the Iceland-Scotland Overflow Water. Erosional processes are concentrated on narrow zones on top of the axial ridges and on the steep flanks of the Catalonia Seamount. Well-sorted foraminiferal sands on these exposed regions are assumed to represent residual sediments. Article in Journal/Newspaper Iceland north atlantic current North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Deep Sea Research Part I: Oceanographic Research Papers 43 11-12 1683 1711 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Sediment patterns derived from sediment sampling and acoustic subbottom profiling were mapped on the Reykjanes Ridge (North Atlantic) between 59°N and 60°N. Five discrete sediment echo patterns were distinguished and mapped on a regional scale. The prolonged and layered echo facies, which mainly reflect sediment filled basins on the ridge flanks, indicate deposition of predominantly fine-grained sediments deposited by the Iceland-Scotland Overflow Water. A combination of westward flowing currents spilling over the ridge crest due to the Coriolis force together with the existing morphology probably caused the N-S trending facies distribution pattern on the northwest flank. Furthermore, the modern surface sediment distribution is controlled by biological productivity, which is closely related to the mixing zone of cold subpolar surface water masses and the warm North Atlantic Current, and bottom water transport processes. The effect of bottom current transport is reflected in the pattern of settling velocity and sediment grain size. The clay mineral composition indicates that most of the fine-grained material is supplied predominantly from the Icelandic province by the Iceland-Scotland Overflow Water. Erosional processes are concentrated on narrow zones on top of the axial ridges and on the steep flanks of the Catalonia Seamount. Well-sorted foraminiferal sands on these exposed regions are assumed to represent residual sediments. |
format |
Article in Journal/Newspaper |
author |
Lackschewitz, Klas Endler, R. Gehrke, Bettina Wallrabe-Adams, H.-J. Thiede, Jörn |
spellingShingle |
Lackschewitz, Klas Endler, R. Gehrke, Bettina Wallrabe-Adams, H.-J. Thiede, Jörn Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N |
author_facet |
Lackschewitz, Klas Endler, R. Gehrke, Bettina Wallrabe-Adams, H.-J. Thiede, Jörn |
author_sort |
Lackschewitz, Klas |
title |
Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N |
title_short |
Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N |
title_full |
Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N |
title_fullStr |
Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N |
title_full_unstemmed |
Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N |
title_sort |
evidence for topography- and current-controlled deposition on the reykjanes ridge between 59°n and 60°n |
publisher |
Elsevier |
publishDate |
1996 |
url |
https://oceanrep.geomar.de/id/eprint/31414/ https://oceanrep.geomar.de/id/eprint/31414/1/1-s2.0-S0967063796000908-main.pdf https://doi.org/10.1016/S0967-0637(96)00090-8 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Reykjanes |
geographic_facet |
Reykjanes |
genre |
Iceland north atlantic current North Atlantic |
genre_facet |
Iceland north atlantic current North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/31414/1/1-s2.0-S0967063796000908-main.pdf Lackschewitz, K., Endler, R., Gehrke, B., Wallrabe-Adams, H. J. and Thiede, J. (1996) Evidence for topography- and current-controlled deposition on the Reykjanes Ridge between 59°N and 60°N. Deep Sea Research Part I: Oceanographic Research Papers, 43 (11-12). pp. 1683-1711. DOI 10.1016/S0967-0637(96)00090-8 <https://doi.org/10.1016/S0967-0637%2896%2900090-8>. doi:10.1016/S0967-0637(96)00090-8 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/S0967-0637(96)00090-8 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
43 |
container_issue |
11-12 |
container_start_page |
1683 |
op_container_end_page |
1711 |
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1766038288158687232 |