Diatom abundances of ODP Hole 177-1093A in the Southern Ocean
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 stag...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.706805 2023-05-15T13:42:09+02:00 Diatom abundances of ODP Hole 177-1093A in the Southern Ocean Grigorov, Ivo Pearce, Richard B Kemp, Alan E S LATITUDE: -49.976600 * LONGITUDE: 5.865400 * DATE/TIME START: 1998-01-10T16:24:00 * DATE/TIME END: 1998-01-12T12:45:00 2002-10-30 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.706805 https://doi.org/10.1594/PANGAEA.706805 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.706805 https://doi.org/10.1594/PANGAEA.706805 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Grigorov, Ivo; Pearce, Richard B; Kemp, Alan E S (2002): Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093. Deep Sea Research Part II: Topical Studies in Oceanography, 49(16), 3391-3407, https://doi.org/10.1016/S0967-0645(02)00089-9 177-1093A DRILL Drilling/drill rig Joides Resolution Leg177 Ocean Drilling Program ODP South Atlantic Ocean Dataset 2002 ftpangaea https://doi.org/10.1594/PANGAEA.706805 https://doi.org/10.1016/S0967-0645(02)00089-9 2023-01-20T07:31:15Z 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 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. Dataset Antarc* Antarctica South Atlantic Ocean Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Southern Ocean ENVELOPE(5.865400,5.865400,-49.976600,-49.976600) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
177-1093A DRILL Drilling/drill rig Joides Resolution Leg177 Ocean Drilling Program ODP South Atlantic Ocean |
spellingShingle |
177-1093A DRILL Drilling/drill rig Joides Resolution Leg177 Ocean Drilling Program ODP South Atlantic Ocean Grigorov, Ivo Pearce, Richard B Kemp, Alan E S Diatom abundances of ODP Hole 177-1093A in the Southern Ocean |
topic_facet |
177-1093A DRILL Drilling/drill rig Joides Resolution Leg177 Ocean Drilling Program ODP South Atlantic Ocean |
description |
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 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. |
format |
Dataset |
author |
Grigorov, Ivo Pearce, Richard B Kemp, Alan E S |
author_facet |
Grigorov, Ivo Pearce, Richard B Kemp, Alan E S |
author_sort |
Grigorov, Ivo |
title |
Diatom abundances of ODP Hole 177-1093A in the Southern Ocean |
title_short |
Diatom abundances of ODP Hole 177-1093A in the Southern Ocean |
title_full |
Diatom abundances of ODP Hole 177-1093A in the Southern Ocean |
title_fullStr |
Diatom abundances of ODP Hole 177-1093A in the Southern Ocean |
title_full_unstemmed |
Diatom abundances of ODP Hole 177-1093A in the Southern Ocean |
title_sort |
diatom abundances of odp hole 177-1093a in the southern ocean |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.706805 https://doi.org/10.1594/PANGAEA.706805 |
op_coverage |
LATITUDE: -49.976600 * LONGITUDE: 5.865400 * DATE/TIME START: 1998-01-10T16:24:00 * DATE/TIME END: 1998-01-12T12:45:00 |
long_lat |
ENVELOPE(5.865400,5.865400,-49.976600,-49.976600) |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Antarc* Antarctica South Atlantic Ocean Southern Ocean |
genre_facet |
Antarc* Antarctica South Atlantic Ocean Southern Ocean |
op_source |
Supplement to: Grigorov, Ivo; Pearce, Richard B; Kemp, Alan E S (2002): Southern Ocean laminated diatom ooze: mat deposits and potential for palaeo-flux studies, ODP leg 177, Site 1093. Deep Sea Research Part II: Topical Studies in Oceanography, 49(16), 3391-3407, https://doi.org/10.1016/S0967-0645(02)00089-9 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.706805 https://doi.org/10.1594/PANGAEA.706805 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.706805 https://doi.org/10.1016/S0967-0645(02)00089-9 |
_version_ |
1766163397915705344 |