Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank
High-resolution seismic reflection data across the Maurice Ewing Bank, the easternmost section of the Falkland/ Malvinas Plateau in the SW South Atlantic, is integrated with information from Deep Sea Drilling Project Leg 36, Sites 327, 329, and 330 and Leg 71 Site 511. Five seismic units were identi...
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Online Access: | https://epic.awi.de/id/eprint/54246/ https://epic.awi.de/id/eprint/54246/1/1-s2-S0025322721001079-main.pdf https://authors.elsevier.com/sd/article/S0025-3227(21)00107-9 https://hdl.handle.net/10013/epic.7e9a55a4-1e65-4ae9-bdb8-52f5920c6f70 |
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ftawi:oai:epic.awi.de:54246 2024-01-21T10:00:51+01:00 Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank Najjarifarizhendi, Banafsheh Uenzelmann-Neben, Gabriele 2021-05-31 application/pdf https://epic.awi.de/id/eprint/54246/ https://epic.awi.de/id/eprint/54246/1/1-s2-S0025322721001079-main.pdf https://authors.elsevier.com/sd/article/S0025-3227(21)00107-9 https://hdl.handle.net/10013/epic.7e9a55a4-1e65-4ae9-bdb8-52f5920c6f70 unknown ELSEVIER https://epic.awi.de/id/eprint/54246/1/1-s2-S0025322721001079-main.pdf Najjarifarizhendi, B. orcid:0000-0001-5994-6325 and Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 (2021) Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank , Marine Geology, 438 . doi:10.1016/j.margeo.2021.106525 <https://doi.org/10.1016/j.margeo.2021.106525> , hdl:10013/epic.7e9a55a4-1e65-4ae9-bdb8-52f5920c6f70 EPIC3Marine Geology, ELSEVIER, 438, ISSN: 0025-3227 Article peerRev 2021 ftawi https://doi.org/10.1016/j.margeo.2021.106525 2023-12-25T00:23:13Z High-resolution seismic reflection data across the Maurice Ewing Bank, the easternmost section of the Falkland/ Malvinas Plateau in the SW South Atlantic, is integrated with information from Deep Sea Drilling Project Leg 36, Sites 327, 329, and 330 and Leg 71 Site 511. Five seismic units were identified ranging in age from the middle Jurassic to Quaternary and are interpreted with respect to the evolution of the oceanic circulation in the Atlantic sector of the Southern Ocean in response to tectonic and climatic events. Sedimentary sequences of late Cretaceous and early Paleogene include little and restricted evidence of current activity, attributable to shallow/ intermediate-depth connections between the developing South Atlantic and the Southern Ocean. In contrast, sedimentary sequences of the late Eocene/Oligocene and Neogene reveal a history of strong current-related erosion and deposition. These features are identified in specific water-depth ranges and interpreted to document proto-Upper and -Lower Circumpolar Deep Waters to have shaped the bank since the Oligocene. The Maurice Ewing Bank bathymetric high thus has been acting as a barrier for the deep and bottom water masses flowing within the Antarctic Circumpolar Current since its establishment at the Eocene-Oligocene boundary. This study provides evidence for a multi-layered ocean already in the Paleocene/early Eocene. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Southern Ocean The Antarctic Maurice ENVELOPE(-55.817,-55.817,-63.133,-63.133) Ewing ENVELOPE(-61.257,-61.257,-69.924,-69.924) Maurice Ewing Bank ENVELOPE(-43.500,-43.500,-50.667,-50.667) Marine Geology 438 106525 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
High-resolution seismic reflection data across the Maurice Ewing Bank, the easternmost section of the Falkland/ Malvinas Plateau in the SW South Atlantic, is integrated with information from Deep Sea Drilling Project Leg 36, Sites 327, 329, and 330 and Leg 71 Site 511. Five seismic units were identified ranging in age from the middle Jurassic to Quaternary and are interpreted with respect to the evolution of the oceanic circulation in the Atlantic sector of the Southern Ocean in response to tectonic and climatic events. Sedimentary sequences of late Cretaceous and early Paleogene include little and restricted evidence of current activity, attributable to shallow/ intermediate-depth connections between the developing South Atlantic and the Southern Ocean. In contrast, sedimentary sequences of the late Eocene/Oligocene and Neogene reveal a history of strong current-related erosion and deposition. These features are identified in specific water-depth ranges and interpreted to document proto-Upper and -Lower Circumpolar Deep Waters to have shaped the bank since the Oligocene. The Maurice Ewing Bank bathymetric high thus has been acting as a barrier for the deep and bottom water masses flowing within the Antarctic Circumpolar Current since its establishment at the Eocene-Oligocene boundary. This study provides evidence for a multi-layered ocean already in the Paleocene/early Eocene. |
format |
Article in Journal/Newspaper |
author |
Najjarifarizhendi, Banafsheh Uenzelmann-Neben, Gabriele |
spellingShingle |
Najjarifarizhendi, Banafsheh Uenzelmann-Neben, Gabriele Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank |
author_facet |
Najjarifarizhendi, Banafsheh Uenzelmann-Neben, Gabriele |
author_sort |
Najjarifarizhendi, Banafsheh |
title |
Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank |
title_short |
Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank |
title_full |
Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank |
title_fullStr |
Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank |
title_full_unstemmed |
Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank |
title_sort |
footprints of palaeocurrents in sedimentary sequences of the cenozoic across the maurice ewing bank |
publisher |
ELSEVIER |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/54246/ https://epic.awi.de/id/eprint/54246/1/1-s2-S0025322721001079-main.pdf https://authors.elsevier.com/sd/article/S0025-3227(21)00107-9 https://hdl.handle.net/10013/epic.7e9a55a4-1e65-4ae9-bdb8-52f5920c6f70 |
long_lat |
ENVELOPE(-55.817,-55.817,-63.133,-63.133) ENVELOPE(-61.257,-61.257,-69.924,-69.924) ENVELOPE(-43.500,-43.500,-50.667,-50.667) |
geographic |
Antarctic Southern Ocean The Antarctic Maurice Ewing Maurice Ewing Bank |
geographic_facet |
Antarctic Southern Ocean The Antarctic Maurice Ewing Maurice Ewing Bank |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
EPIC3Marine Geology, ELSEVIER, 438, ISSN: 0025-3227 |
op_relation |
https://epic.awi.de/id/eprint/54246/1/1-s2-S0025322721001079-main.pdf Najjarifarizhendi, B. orcid:0000-0001-5994-6325 and Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 (2021) Footprints of palaeocurrents in sedimentary sequences of the Cenozoic across the Maurice Ewing Bank , Marine Geology, 438 . doi:10.1016/j.margeo.2021.106525 <https://doi.org/10.1016/j.margeo.2021.106525> , hdl:10013/epic.7e9a55a4-1e65-4ae9-bdb8-52f5920c6f70 |
op_doi |
https://doi.org/10.1016/j.margeo.2021.106525 |
container_title |
Marine Geology |
container_volume |
438 |
container_start_page |
106525 |
_version_ |
1788703627596005376 |