Geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during ODP Leg 119 on the Antarctic continental shelf off Prydz Bay
Drilling was undertaken at five sites (739-743) on ODP Leg 119 on a transect across the continental shelf of Prydz Bay, East Antarctica, to elucidate the long-term glacial history of the area and to examine the importance of the area with respect to the development of the East Antarctic ice sheet as...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.588238 2024-09-15T17:42:50+00:00 Geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during ODP Leg 119 on the Antarctic continental shelf off Prydz Bay Hambrey, Mike J Ehrmann, Werner Larsen, Birger MEDIAN LATITUDE: -67.531556 * MEDIAN LONGITUDE: 75.368939 * SOUTH-BOUND LATITUDE: -68.764000 * WEST-BOUND LONGITUDE: 74.690500 * NORTH-BOUND LATITUDE: -66.916000 * EAST-BOUND LONGITUDE: 76.681900 * DATE/TIME START: 1988-01-18T14:30:00 * DATE/TIME END: 1988-02-03T20:00:00 1991 application/zip, 36 datasets https://doi.pangaea.de/10.1594/PANGAEA.588238 https://doi.org/10.1594/PANGAEA.588238 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.588238 https://doi.org/10.1594/PANGAEA.588238 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Hambrey, Mike J; Ehrmann, Werner; Larsen, Birger (1991): Cenozoic glacial record of the Prydz Bay continental shelf, East Antarctica. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 77-132, https://doi.org/10.2973/odp.proc.sr.119.200.1991 119-739A 119-739B 119-739C 119-740A 119-741A 119-742A 119-743A DRILL Drilling/drill rig Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay dataset publication series 1991 ftpangaea https://doi.org/10.1594/PANGAEA.58823810.2973/odp.proc.sr.119.200.1991 2024-07-24T02:31:42Z Drilling was undertaken at five sites (739-743) on ODP Leg 119 on a transect across the continental shelf of Prydz Bay, East Antarctica, to elucidate the long-term glacial history of the area and to examine the importance of the area with respect to the development of the East Antarctic ice sheet as a whole. In addition to providing a record of glaciation spanning 36 m.y. or more, Leg 119 has provided information concerning the development of a continental margin under the prolonged influence of a major ice sheet. This has allowed the development of a sedimentary model that may be applicable not only to other parts of the Antarctic continental margin, but also to northern high-latitude continental shelves. The cored glacial sedimentary record in Prydz Bay consists of three major sequences, dominated by diamictite: 1. An upper flat-lying sequence that ranges in thickness from a few meters in inner and western Prydz Bay to nearly 250 m in the outer or eastern parts of the bay. The uppermost few meters consist of Holocene diatom ooze and diatomaceous mud with a minor ice-rafted component overlying diamicton and diamictite of late Miocene to Quaternary age. The diamictite is mainly massive, but stratified varieties and minor mudstone and diatomite also occur. 2. An upper prograding sequence cored at Sites 739 and 743, unconformly below the flat-lying sequence. This consists of a relatively steep (4° inclination) prograding wedge with a number of discrete sedimentary packages. At Sites 739 and 743 the sequence is dominated by massive and stratified diamictite, some of which shows evidence of slumping and minor debris flowage. 3. A lower, more gently inclined, prograding sequence lies unconformably below the flat-lying sequence at Site 742 and the upper prograding sequence at Site 739. This extends to the base of both sites, to 316 and 487 mbsf, respectively. It is dominated by massive, relatively clast-poor diamictite which is kaolinite-rich, light in color, and contains sporadic carbonate-cemented layers. The lower ... Other/Unknown Material Antarc* Antarctic Antarctica East Antarctica Ice Sheet Prydz Bay PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(74.690500,76.681900,-66.916000,-68.764000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
119-739A 119-739B 119-739C 119-740A 119-741A 119-742A 119-743A DRILL Drilling/drill rig Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay |
spellingShingle |
119-739A 119-739B 119-739C 119-740A 119-741A 119-742A 119-743A DRILL Drilling/drill rig Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay Hambrey, Mike J Ehrmann, Werner Larsen, Birger Geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during ODP Leg 119 on the Antarctic continental shelf off Prydz Bay |
topic_facet |
119-739A 119-739B 119-739C 119-740A 119-741A 119-742A 119-743A DRILL Drilling/drill rig Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay |
description |
Drilling was undertaken at five sites (739-743) on ODP Leg 119 on a transect across the continental shelf of Prydz Bay, East Antarctica, to elucidate the long-term glacial history of the area and to examine the importance of the area with respect to the development of the East Antarctic ice sheet as a whole. In addition to providing a record of glaciation spanning 36 m.y. or more, Leg 119 has provided information concerning the development of a continental margin under the prolonged influence of a major ice sheet. This has allowed the development of a sedimentary model that may be applicable not only to other parts of the Antarctic continental margin, but also to northern high-latitude continental shelves. The cored glacial sedimentary record in Prydz Bay consists of three major sequences, dominated by diamictite: 1. An upper flat-lying sequence that ranges in thickness from a few meters in inner and western Prydz Bay to nearly 250 m in the outer or eastern parts of the bay. The uppermost few meters consist of Holocene diatom ooze and diatomaceous mud with a minor ice-rafted component overlying diamicton and diamictite of late Miocene to Quaternary age. The diamictite is mainly massive, but stratified varieties and minor mudstone and diatomite also occur. 2. An upper prograding sequence cored at Sites 739 and 743, unconformly below the flat-lying sequence. This consists of a relatively steep (4° inclination) prograding wedge with a number of discrete sedimentary packages. At Sites 739 and 743 the sequence is dominated by massive and stratified diamictite, some of which shows evidence of slumping and minor debris flowage. 3. A lower, more gently inclined, prograding sequence lies unconformably below the flat-lying sequence at Site 742 and the upper prograding sequence at Site 739. This extends to the base of both sites, to 316 and 487 mbsf, respectively. It is dominated by massive, relatively clast-poor diamictite which is kaolinite-rich, light in color, and contains sporadic carbonate-cemented layers. The lower ... |
format |
Other/Unknown Material |
author |
Hambrey, Mike J Ehrmann, Werner Larsen, Birger |
author_facet |
Hambrey, Mike J Ehrmann, Werner Larsen, Birger |
author_sort |
Hambrey, Mike J |
title |
Geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during ODP Leg 119 on the Antarctic continental shelf off Prydz Bay |
title_short |
Geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during ODP Leg 119 on the Antarctic continental shelf off Prydz Bay |
title_full |
Geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during ODP Leg 119 on the Antarctic continental shelf off Prydz Bay |
title_fullStr |
Geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during ODP Leg 119 on the Antarctic continental shelf off Prydz Bay |
title_full_unstemmed |
Geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during ODP Leg 119 on the Antarctic continental shelf off Prydz Bay |
title_sort |
geochemistry, clay mineralogy and grain size distribution in various sediment cores drilled during odp leg 119 on the antarctic continental shelf off prydz bay |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.588238 https://doi.org/10.1594/PANGAEA.588238 |
op_coverage |
MEDIAN LATITUDE: -67.531556 * MEDIAN LONGITUDE: 75.368939 * SOUTH-BOUND LATITUDE: -68.764000 * WEST-BOUND LONGITUDE: 74.690500 * NORTH-BOUND LATITUDE: -66.916000 * EAST-BOUND LONGITUDE: 76.681900 * DATE/TIME START: 1988-01-18T14:30:00 * DATE/TIME END: 1988-02-03T20:00:00 |
long_lat |
ENVELOPE(74.690500,76.681900,-66.916000,-68.764000) |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Prydz Bay |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Prydz Bay |
op_source |
Supplement to: Hambrey, Mike J; Ehrmann, Werner; Larsen, Birger (1991): Cenozoic glacial record of the Prydz Bay continental shelf, East Antarctica. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 77-132, https://doi.org/10.2973/odp.proc.sr.119.200.1991 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.588238 https://doi.org/10.1594/PANGAEA.588238 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.58823810.2973/odp.proc.sr.119.200.1991 |
_version_ |
1810489615030681600 |