Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093
International audience Laminated diatom ooze samples collected during ODP Leg 177 were analysed using scanning electron microscope (SEM) and optical microscopy to test their potential as high-resolution records of Polar Front hydrography, surface production, and export. SEM analysis from two interva...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.univ-brest.fr/hal-00451245 https://hal.univ-brest.fr/hal-00451245/document https://hal.univ-brest.fr/hal-00451245/file/Grigorov_et_al_2002._Southern_Ocean_laminated_diatom_ooze_mat_deposits_and.pdf https://doi.org/10.1016/S0967-0645(02)00089-9 |
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ftccsdartic:oai:HAL:hal-00451245v1 2023-05-15T13:56:50+02:00 Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093 Grigorov, Ivo Pearce, Richard, Kemp, Alan Université de Brest (UBO) National Oceanography Centre (NOC) NERC Ocean Drilling Program Leg 177 Scietific Party 2002-03-21 https://hal.univ-brest.fr/hal-00451245 https://hal.univ-brest.fr/hal-00451245/document https://hal.univ-brest.fr/hal-00451245/file/Grigorov_et_al_2002._Southern_Ocean_laminated_diatom_ooze_mat_deposits_and.pdf https://doi.org/10.1016/S0967-0645(02)00089-9 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/S0967-0645(02)00089-9 hal-00451245 https://hal.univ-brest.fr/hal-00451245 https://hal.univ-brest.fr/hal-00451245/document https://hal.univ-brest.fr/hal-00451245/file/Grigorov_et_al_2002._Southern_Ocean_laminated_diatom_ooze_mat_deposits_and.pdf doi:10.1016/S0967-0645(02)00089-9 info:eu-repo/semantics/OpenAccess ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.univ-brest.fr/hal-00451245 Deep Sea Research Part II: Topical Studies in Oceanography, Elsevier, 2002, 49 (16), pp.3391-3407. ⟨10.1016/S0967-0645(02)00089-9⟩ laminated sediments sediment fabric Thalassiothrix antarctica mats flux records Southern Ocean [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2002 ftccsdartic https://doi.org/10.1016/S0967-0645(02)00089-9 2021-10-17T02:01:45Z International audience Laminated diatom ooze samples collected during ODP Leg 177 were analysed using scanning electron microscope (SEM) and optical microscopy to test their potential as high-resolution records of Polar Front hydrography, surface production, and export. SEM analysis from two intervals, marine isotope stage (MIS) 29 and 12/11, respectively, recovered from 50°S in the Atlantic Ocean (ODP Site 1093, Hole A, sections 13H-4 0–18 cm and 23H-4 0–22 cm), show abundant and well-preserved Thalassiothrix antarctica mats, thought to be indicative of rapid export from the surface and deposition in the sediment. A preliminary analysis of laminae succession points to a possible annual couplet/triplet succession of laminae, and suggests exceptionally high local sedimentation rates of 57 and 80 cm kyr−1 for MIS 12/11 and 29, respectively. Such high accumulation rates imply that local export from the surface layer and sequestration of biogenic silica and organic matter to the sediments may have been much higher than previously suggested. Article in Journal/Newspaper Antarc* Antarctica Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Southern Ocean Deep Sea Research Part II: Topical Studies in Oceanography 49 16 3391 3407 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
laminated sediments sediment fabric Thalassiothrix antarctica mats flux records Southern Ocean [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
laminated sediments sediment fabric Thalassiothrix antarctica mats flux records Southern Ocean [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Grigorov, Ivo Pearce, Richard, Kemp, Alan Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093 |
topic_facet |
laminated sediments sediment fabric Thalassiothrix antarctica mats flux records Southern Ocean [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Laminated diatom ooze samples collected during ODP Leg 177 were analysed using scanning electron microscope (SEM) and optical microscopy to test their potential as high-resolution records of Polar Front hydrography, surface production, and export. SEM analysis from two intervals, marine isotope stage (MIS) 29 and 12/11, respectively, recovered from 50°S in the Atlantic Ocean (ODP Site 1093, Hole A, sections 13H-4 0–18 cm and 23H-4 0–22 cm), show abundant and well-preserved Thalassiothrix antarctica mats, thought to be indicative of rapid export from the surface and deposition in the sediment. A preliminary analysis of laminae succession points to a possible annual couplet/triplet succession of laminae, and suggests exceptionally high local sedimentation rates of 57 and 80 cm kyr−1 for MIS 12/11 and 29, respectively. Such high accumulation rates imply that local export from the surface layer and sequestration of biogenic silica and organic matter to the sediments may have been much higher than previously suggested. |
author2 |
Université de Brest (UBO) National Oceanography Centre (NOC) NERC Ocean Drilling Program Leg 177 Scietific Party |
format |
Article in Journal/Newspaper |
author |
Grigorov, Ivo Pearce, Richard, Kemp, Alan |
author_facet |
Grigorov, Ivo Pearce, Richard, Kemp, Alan |
author_sort |
Grigorov, Ivo |
title |
Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093 |
title_short |
Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093 |
title_full |
Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093 |
title_fullStr |
Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093 |
title_full_unstemmed |
Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093 |
title_sort |
southern ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, odp leg 177, site 1093 |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.univ-brest.fr/hal-00451245 https://hal.univ-brest.fr/hal-00451245/document https://hal.univ-brest.fr/hal-00451245/file/Grigorov_et_al_2002._Southern_Ocean_laminated_diatom_ooze_mat_deposits_and.pdf https://doi.org/10.1016/S0967-0645(02)00089-9 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_source |
ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.univ-brest.fr/hal-00451245 Deep Sea Research Part II: Topical Studies in Oceanography, Elsevier, 2002, 49 (16), pp.3391-3407. ⟨10.1016/S0967-0645(02)00089-9⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0967-0645(02)00089-9 hal-00451245 https://hal.univ-brest.fr/hal-00451245 https://hal.univ-brest.fr/hal-00451245/document https://hal.univ-brest.fr/hal-00451245/file/Grigorov_et_al_2002._Southern_Ocean_laminated_diatom_ooze_mat_deposits_and.pdf doi:10.1016/S0967-0645(02)00089-9 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/S0967-0645(02)00089-9 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
49 |
container_issue |
16 |
container_start_page |
3391 |
op_container_end_page |
3407 |
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