Sedimentology at the continental margin of the southern Weddell Sea
During four expeditions with RV "Polarstern" at the continental margin of the southern Weddell Sea, profiling and geological sampling were carried out. A detailed bathymetric map was constructed from echo-sounding data. Sub-bottom profiles, classified into nine echotypes, have been mapped...
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Format: | Dataset |
Language: | English |
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PANGAEA
1991
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.729620 https://doi.org/10.1594/PANGAEA.729620 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.729620 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANT-I/2 ANT-II/4 ANT-III/3 ANT-IV/3 ANT-V/4 ANT-VI/3 Atka Bay AWI_Paleo Camp Norway Cape Fiske Dredge DRG Eastern Weddell Sea Southern Ocean Filchner Shelf Filchner Trough Giant box corer GKG Gould Bay Gravity corer (Kiel type) Kapp Norvegia Lyddan Island MG Multiboxcorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS01 PS01/154 PS01/155 PS01/156 PS01/161 PS01/162 PS01/177 PS01/184 PS01/186 PS01/189 PS04 PS04/477 PS04/481 PS04/484 PS04/495 PS04/500 PS04/508 PS04/509 PS06/301 PS06/302 PS06/303 PS06/304 PS06/306 PS06 SIBEX |
spellingShingle |
ANT-I/2 ANT-II/4 ANT-III/3 ANT-IV/3 ANT-V/4 ANT-VI/3 Atka Bay AWI_Paleo Camp Norway Cape Fiske Dredge DRG Eastern Weddell Sea Southern Ocean Filchner Shelf Filchner Trough Giant box corer GKG Gould Bay Gravity corer (Kiel type) Kapp Norvegia Lyddan Island MG Multiboxcorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS01 PS01/154 PS01/155 PS01/156 PS01/161 PS01/162 PS01/177 PS01/184 PS01/186 PS01/189 PS04 PS04/477 PS04/481 PS04/484 PS04/495 PS04/500 PS04/508 PS04/509 PS06/301 PS06/302 PS06/303 PS06/304 PS06/306 PS06 SIBEX Melles, Martin Sedimentology at the continental margin of the southern Weddell Sea |
topic_facet |
ANT-I/2 ANT-II/4 ANT-III/3 ANT-IV/3 ANT-V/4 ANT-VI/3 Atka Bay AWI_Paleo Camp Norway Cape Fiske Dredge DRG Eastern Weddell Sea Southern Ocean Filchner Shelf Filchner Trough Giant box corer GKG Gould Bay Gravity corer (Kiel type) Kapp Norvegia Lyddan Island MG Multiboxcorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS01 PS01/154 PS01/155 PS01/156 PS01/161 PS01/162 PS01/177 PS01/184 PS01/186 PS01/189 PS04 PS04/477 PS04/481 PS04/484 PS04/495 PS04/500 PS04/508 PS04/509 PS06/301 PS06/302 PS06/303 PS06/304 PS06/306 PS06 SIBEX |
description |
During four expeditions with RV "Polarstern" at the continental margin of the southern Weddell Sea, profiling and geological sampling were carried out. A detailed bathymetric map was constructed from echo-sounding data. Sub-bottom profiles, classified into nine echotypes, have been mapped and interpreted. Sedimentological analyses were carried out on 32 undisturbed box grab surface samples, as well as on sediment cores from 9 sites. Apart from the description of the sediments and the investigation of sedimentary structures on X-radiographs the following characteristics were determined: grain-size distributions; carbonate and Corg content; component distibutions in different grain-size fractions; stable oxygen and carbon isotopes in planktic and, partly, in benthic foraminifers; and physical properties. The stratigraphy is based On 14C-dating, oxygen isotope Stages and, at one site, On paleomagnetic measurements and 230Th-analyses The sediments represent the period of deposition from the last glacial maximum until recent time. They are composed predominantly of terrigenous components. The formation of the sediments was controlled by glaciological, hydrographical and gravitational processes. Variations in the sea-ice coverage influenced biogenic production. The ice sheet and icebergs were important media for sediment transport; their grounding caused compaction and erosion of glacial marine sediments on the outer continental shelf. The circulation and the physical and chemical properties of the water masses controlled the transport of fine-grained material, biogenic production and its preservation. Gravitational transport processes were the inain mode of sediment movements on the continental slope. The continental ice sheet advanced to the shelf edge and grounded On the sea-floor, presumably later than 31,000 y.B.P. This ice movement was linked with erosion of shelf sediments and a very high sediment supply to the upper continental slope from the adiacent southern shelf. The erosional surface On the shelf is ... |
format |
Dataset |
author |
Melles, Martin |
author_facet |
Melles, Martin |
author_sort |
Melles, Martin |
title |
Sedimentology at the continental margin of the southern Weddell Sea |
title_short |
Sedimentology at the continental margin of the southern Weddell Sea |
title_full |
Sedimentology at the continental margin of the southern Weddell Sea |
title_fullStr |
Sedimentology at the continental margin of the southern Weddell Sea |
title_full_unstemmed |
Sedimentology at the continental margin of the southern Weddell Sea |
title_sort |
sedimentology at the continental margin of the southern weddell sea |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.729620 https://doi.org/10.1594/PANGAEA.729620 |
op_coverage |
MEDIAN LATITUDE: -76.175294 * MEDIAN LONGITUDE: -37.043437 * SOUTH-BOUND LATITUDE: -77.737290 * WEST-BOUND LONGITUDE: -61.321667 * NORTH-BOUND LATITUDE: -65.050000 * EAST-BOUND LONGITUDE: -5.616660 * DATE/TIME START: 1983-02-13T00:00:00 * DATE/TIME END: 1988-02-03T17:39:00 |
long_lat |
ENVELOPE(151.789,151.789,60.835,60.835) ENVELOPE(-60.650,-60.650,-74.283,-74.283) ENVELOPE(-36.000,-36.000,-77.000,-77.000) ENVELOPE(-44.000,-44.000,-78.167,-78.167) ENVELOPE(-20.750,-20.750,-74.417,-74.417) ENVELOPE(-61.321667,-5.616660,-65.050000,-77.737290) |
geographic |
Atka Cape Fiske Filchner Trough Gould Bay Lyddan Island Norway Southern Ocean Weddell Weddell Sea |
geographic_facet |
Atka Cape Fiske Filchner Trough Gould Bay Lyddan Island Norway Southern Ocean Weddell Weddell Sea |
genre |
Berichte zur Polarforschung Gould Bay Ice Sheet Polar Research Polarforschung Reports on polar research Sea ice Southern Ocean Weddell Sea |
genre_facet |
Berichte zur Polarforschung Gould Bay Ice Sheet Polar Research Polarforschung Reports on polar research Sea ice Southern Ocean Weddell Sea |
op_source |
Supplement to: Melles, Martin (1991): Paläoglaziologie und Paläozeanographie im Spätquartär am Kontinentalrand des südlichen Weddellmeeres, Antarktis (Late Quaternary paleoglaciology and paleoceanography at the continental margin of the southern Weddell Sea, Antarctica). Berichte zur Polarforschung = Reports on Polar Research, 81, 190 pp, https://doi.org/10.2312/BzP_0081_1991 |
op_relation |
Melles, Martin; Kuhn, Gerhard; Fütterer, Dieter K; Meischner, Dieter (1995): Processes of modern sedimentation in the Southern Weddell Sea, Antarctica - evidence from surface sediments. Polarforschung, 64(2), 45-74, hdl:10013/epic.29727.d001 https://doi.pangaea.de/10.1594/PANGAEA.729620 https://doi.org/10.1594/PANGAEA.729620 |
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.729620 https://doi.org/10.2312/BzP_0081_1991 |
_version_ |
1766376110279360512 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.729620 2023-05-15T15:42:27+02:00 Sedimentology at the continental margin of the southern Weddell Sea Melles, Martin MEDIAN LATITUDE: -76.175294 * MEDIAN LONGITUDE: -37.043437 * SOUTH-BOUND LATITUDE: -77.737290 * WEST-BOUND LONGITUDE: -61.321667 * NORTH-BOUND LATITUDE: -65.050000 * EAST-BOUND LONGITUDE: -5.616660 * DATE/TIME START: 1983-02-13T00:00:00 * DATE/TIME END: 1988-02-03T17:39:00 1991-11-26 application/zip, 209 datasets https://doi.pangaea.de/10.1594/PANGAEA.729620 https://doi.org/10.1594/PANGAEA.729620 en eng PANGAEA Melles, Martin; Kuhn, Gerhard; Fütterer, Dieter K; Meischner, Dieter (1995): Processes of modern sedimentation in the Southern Weddell Sea, Antarctica - evidence from surface sediments. Polarforschung, 64(2), 45-74, hdl:10013/epic.29727.d001 https://doi.pangaea.de/10.1594/PANGAEA.729620 https://doi.org/10.1594/PANGAEA.729620 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Melles, Martin (1991): Paläoglaziologie und Paläozeanographie im Spätquartär am Kontinentalrand des südlichen Weddellmeeres, Antarktis (Late Quaternary paleoglaciology and paleoceanography at the continental margin of the southern Weddell Sea, Antarctica). Berichte zur Polarforschung = Reports on Polar Research, 81, 190 pp, https://doi.org/10.2312/BzP_0081_1991 ANT-I/2 ANT-II/4 ANT-III/3 ANT-IV/3 ANT-V/4 ANT-VI/3 Atka Bay AWI_Paleo Camp Norway Cape Fiske Dredge DRG Eastern Weddell Sea Southern Ocean Filchner Shelf Filchner Trough Giant box corer GKG Gould Bay Gravity corer (Kiel type) Kapp Norvegia Lyddan Island MG Multiboxcorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS01 PS01/154 PS01/155 PS01/156 PS01/161 PS01/162 PS01/177 PS01/184 PS01/186 PS01/189 PS04 PS04/477 PS04/481 PS04/484 PS04/495 PS04/500 PS04/508 PS04/509 PS06/301 PS06/302 PS06/303 PS06/304 PS06/306 PS06 SIBEX Dataset 1991 ftpangaea https://doi.org/10.1594/PANGAEA.729620 https://doi.org/10.2312/BzP_0081_1991 2023-01-20T07:31:35Z During four expeditions with RV "Polarstern" at the continental margin of the southern Weddell Sea, profiling and geological sampling were carried out. A detailed bathymetric map was constructed from echo-sounding data. Sub-bottom profiles, classified into nine echotypes, have been mapped and interpreted. Sedimentological analyses were carried out on 32 undisturbed box grab surface samples, as well as on sediment cores from 9 sites. Apart from the description of the sediments and the investigation of sedimentary structures on X-radiographs the following characteristics were determined: grain-size distributions; carbonate and Corg content; component distibutions in different grain-size fractions; stable oxygen and carbon isotopes in planktic and, partly, in benthic foraminifers; and physical properties. The stratigraphy is based On 14C-dating, oxygen isotope Stages and, at one site, On paleomagnetic measurements and 230Th-analyses The sediments represent the period of deposition from the last glacial maximum until recent time. They are composed predominantly of terrigenous components. The formation of the sediments was controlled by glaciological, hydrographical and gravitational processes. Variations in the sea-ice coverage influenced biogenic production. The ice sheet and icebergs were important media for sediment transport; their grounding caused compaction and erosion of glacial marine sediments on the outer continental shelf. The circulation and the physical and chemical properties of the water masses controlled the transport of fine-grained material, biogenic production and its preservation. Gravitational transport processes were the inain mode of sediment movements on the continental slope. The continental ice sheet advanced to the shelf edge and grounded On the sea-floor, presumably later than 31,000 y.B.P. This ice movement was linked with erosion of shelf sediments and a very high sediment supply to the upper continental slope from the adiacent southern shelf. The erosional surface On the shelf is ... Dataset Berichte zur Polarforschung Gould Bay Ice Sheet Polar Research Polarforschung Reports on polar research Sea ice Southern Ocean Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Atka ENVELOPE(151.789,151.789,60.835,60.835) Cape Fiske ENVELOPE(-60.650,-60.650,-74.283,-74.283) Filchner Trough ENVELOPE(-36.000,-36.000,-77.000,-77.000) Gould Bay ENVELOPE(-44.000,-44.000,-78.167,-78.167) Lyddan Island ENVELOPE(-20.750,-20.750,-74.417,-74.417) Norway Southern Ocean Weddell Weddell Sea ENVELOPE(-61.321667,-5.616660,-65.050000,-77.737290) |