(Appendix) Ostracodes at DSDP Leg 72 Holes
From the study of the ostracodes of Sites 516, 517, and 518 in comparison with those of Sites 21, 22, and 357, we can show that a time lag (early to late Oliogene) existed between the formation of the deep water masses (mid-bathyal ± 2000 m) and those of intermediate depths (upper bathyal ± 1000 m)....
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1983
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.811745 2023-05-15T13:49:51+02:00 (Appendix) Ostracodes at DSDP Leg 72 Holes Benson, Richard H Peypouquet, Jean Pierre MEDIAN LATITUDE: -30.368325 * MEDIAN LONGITUDE: -36.686675 * SOUTH-BOUND LATITUDE: -30.946800 * WEST-BOUND LONGITUDE: -38.135300 * NORTH-BOUND LATITUDE: -29.973700 * EAST-BOUND LONGITUDE: -35.285000 * DATE/TIME START: 1980-03-11T00:00:00 * DATE/TIME END: 1980-04-02T00:00:00 * MINIMUM ELEVATION: -3944.0 m * MAXIMUM ELEVATION: -1313.0 m 1983-05-16 text/tab-separated-values, 1071 data points https://doi.pangaea.de/10.1594/PANGAEA.811745 https://doi.org/10.1594/PANGAEA.811745 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.811745 https://doi.org/10.1594/PANGAEA.811745 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Benson, Richard H; Peypouquet, Jean Pierre (1983): The upper and mid-bathyal Cenozoic ostracode faunas of the Rio Grande Rise found on Leg 72 Deep Sea Drilling Project. In: Barker, PF; Carlson, RL; Johnson, DA; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 72, 805-818, https://doi.org/10.2973/dsdp.proc.72.137.1983 72-516 72-516F 72-517 72-518 Abyssocythere sp. Agrenocythere sp. Ambocythere sp. Argilloecia sp. Atlanticythere sp. Bairdia sp. Bradleya sp. Bythocypris sp. Bythocythere sp. Cyprideis sp. Cythereis sp. Cytherella sp. Cytheropteron sp. Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Echinocythereis ericea Elevation of event Eucythere sp. Event label Glomar Challenger Henryhowella sp. Hyphalocythere sp. Krithe sp. Latitude of event Leg72 Longitude of event Nannofossil zone Ostracoda indeterminata Oxycythereis sp. Paracypris sp. Parakrithe sp. Pelecocythere sp. Poseidonamicus sp. Rockallia sp. Sample code/label South Atlantic/CONT RISE South Atlantic/FLANK Stage Suhmicythere sp. Thalassocythere sp. Trachyleberis sp. Zone Dataset 1983 ftpangaea https://doi.org/10.1594/PANGAEA.811745 https://doi.org/10.2973/dsdp.proc.72.137.1983 2023-01-20T09:01:08Z From the study of the ostracodes of Sites 516, 517, and 518 in comparison with those of Sites 21, 22, and 357, we can show that a time lag (early to late Oliogene) existed between the formation of the deep water masses (mid-bathyal ± 2000 m) and those of intermediate depths (upper bathyal ± 1000 m). The ostracode faunas suggest that while the Antarctic Intermediate Water (O2 = 4.5 to 5 ml/l) was flowing through the Vema Trough to fill the northern basins, the returning less-dense, warmer water (O2 = 3.5 to 5 ml/l) originating in Tethys was being gradually displaced upslope. Efforts to identify shallow (less than 200 m) faunas were unsuccessful. No evidence of significant changes in paleodepth or close proximity to islands could be found that could not be better explained by water-mass changes. Studies of the genera Poseidonamicus and Krithe suggest an important water mass change at about 14 Ma (late-middle Miocene), but the cause of this event is not yet understood. Dataset Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic The Antarctic ENVELOPE(-38.135300,-35.285000,-29.973700,-30.946800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
72-516 72-516F 72-517 72-518 Abyssocythere sp. Agrenocythere sp. Ambocythere sp. Argilloecia sp. Atlanticythere sp. Bairdia sp. Bradleya sp. Bythocypris sp. Bythocythere sp. Cyprideis sp. Cythereis sp. Cytherella sp. Cytheropteron sp. Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Echinocythereis ericea Elevation of event Eucythere sp. Event label Glomar Challenger Henryhowella sp. Hyphalocythere sp. Krithe sp. Latitude of event Leg72 Longitude of event Nannofossil zone Ostracoda indeterminata Oxycythereis sp. Paracypris sp. Parakrithe sp. Pelecocythere sp. Poseidonamicus sp. Rockallia sp. Sample code/label South Atlantic/CONT RISE South Atlantic/FLANK Stage Suhmicythere sp. Thalassocythere sp. Trachyleberis sp. Zone |
spellingShingle |
72-516 72-516F 72-517 72-518 Abyssocythere sp. Agrenocythere sp. Ambocythere sp. Argilloecia sp. Atlanticythere sp. Bairdia sp. Bradleya sp. Bythocypris sp. Bythocythere sp. Cyprideis sp. Cythereis sp. Cytherella sp. Cytheropteron sp. Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Echinocythereis ericea Elevation of event Eucythere sp. Event label Glomar Challenger Henryhowella sp. Hyphalocythere sp. Krithe sp. Latitude of event Leg72 Longitude of event Nannofossil zone Ostracoda indeterminata Oxycythereis sp. Paracypris sp. Parakrithe sp. Pelecocythere sp. Poseidonamicus sp. Rockallia sp. Sample code/label South Atlantic/CONT RISE South Atlantic/FLANK Stage Suhmicythere sp. Thalassocythere sp. Trachyleberis sp. Zone Benson, Richard H Peypouquet, Jean Pierre (Appendix) Ostracodes at DSDP Leg 72 Holes |
topic_facet |
72-516 72-516F 72-517 72-518 Abyssocythere sp. Agrenocythere sp. Ambocythere sp. Argilloecia sp. Atlanticythere sp. Bairdia sp. Bradleya sp. Bythocypris sp. Bythocythere sp. Cyprideis sp. Cythereis sp. Cytherella sp. Cytheropteron sp. Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Echinocythereis ericea Elevation of event Eucythere sp. Event label Glomar Challenger Henryhowella sp. Hyphalocythere sp. Krithe sp. Latitude of event Leg72 Longitude of event Nannofossil zone Ostracoda indeterminata Oxycythereis sp. Paracypris sp. Parakrithe sp. Pelecocythere sp. Poseidonamicus sp. Rockallia sp. Sample code/label South Atlantic/CONT RISE South Atlantic/FLANK Stage Suhmicythere sp. Thalassocythere sp. Trachyleberis sp. Zone |
description |
From the study of the ostracodes of Sites 516, 517, and 518 in comparison with those of Sites 21, 22, and 357, we can show that a time lag (early to late Oliogene) existed between the formation of the deep water masses (mid-bathyal ± 2000 m) and those of intermediate depths (upper bathyal ± 1000 m). The ostracode faunas suggest that while the Antarctic Intermediate Water (O2 = 4.5 to 5 ml/l) was flowing through the Vema Trough to fill the northern basins, the returning less-dense, warmer water (O2 = 3.5 to 5 ml/l) originating in Tethys was being gradually displaced upslope. Efforts to identify shallow (less than 200 m) faunas were unsuccessful. No evidence of significant changes in paleodepth or close proximity to islands could be found that could not be better explained by water-mass changes. Studies of the genera Poseidonamicus and Krithe suggest an important water mass change at about 14 Ma (late-middle Miocene), but the cause of this event is not yet understood. |
format |
Dataset |
author |
Benson, Richard H Peypouquet, Jean Pierre |
author_facet |
Benson, Richard H Peypouquet, Jean Pierre |
author_sort |
Benson, Richard H |
title |
(Appendix) Ostracodes at DSDP Leg 72 Holes |
title_short |
(Appendix) Ostracodes at DSDP Leg 72 Holes |
title_full |
(Appendix) Ostracodes at DSDP Leg 72 Holes |
title_fullStr |
(Appendix) Ostracodes at DSDP Leg 72 Holes |
title_full_unstemmed |
(Appendix) Ostracodes at DSDP Leg 72 Holes |
title_sort |
(appendix) ostracodes at dsdp leg 72 holes |
publisher |
PANGAEA |
publishDate |
1983 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.811745 https://doi.org/10.1594/PANGAEA.811745 |
op_coverage |
MEDIAN LATITUDE: -30.368325 * MEDIAN LONGITUDE: -36.686675 * SOUTH-BOUND LATITUDE: -30.946800 * WEST-BOUND LONGITUDE: -38.135300 * NORTH-BOUND LATITUDE: -29.973700 * EAST-BOUND LONGITUDE: -35.285000 * DATE/TIME START: 1980-03-11T00:00:00 * DATE/TIME END: 1980-04-02T00:00:00 * MINIMUM ELEVATION: -3944.0 m * MAXIMUM ELEVATION: -1313.0 m |
long_lat |
ENVELOPE(-38.135300,-35.285000,-29.973700,-30.946800) |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Benson, Richard H; Peypouquet, Jean Pierre (1983): The upper and mid-bathyal Cenozoic ostracode faunas of the Rio Grande Rise found on Leg 72 Deep Sea Drilling Project. In: Barker, PF; Carlson, RL; Johnson, DA; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 72, 805-818, https://doi.org/10.2973/dsdp.proc.72.137.1983 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.811745 https://doi.org/10.1594/PANGAEA.811745 |
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.811745 https://doi.org/10.2973/dsdp.proc.72.137.1983 |
_version_ |
1766252387099475968 |