Middle Miocene events in ODP and DSDP sites of the Ross Sea
Seismic correlation of glacial unconformities from the Ross Sea outer continental shelf to chronostratigraphic control at DSDP sites 272 and 273 indicates that at least two West Antarctic Ice Sheet (WAIS) expansions occurred during the early part of the middle Miocene (i.e. well before completion of...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.722496 2023-05-15T13:42:09+02:00 Middle Miocene events in ODP and DSDP sites of the Ross Sea Bart, Philip J MEDIAN LATITUDE: -65.321800 * MEDIAN LONGITUDE: 127.863500 * SOUTH-BOUND LATITUDE: -77.127000 * WEST-BOUND LONGITUDE: 76.794000 * NORTH-BOUND LATITUDE: -54.811000 * EAST-BOUND LONGITUDE: -176.760200 * DATE/TIME START: 1973-02-06T00:00:00 * DATE/TIME END: 1988-03-12T00:00:00 2003-06-24 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.722496 https://doi.org/10.1594/PANGAEA.722496 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.722496 https://doi.org/10.1594/PANGAEA.722496 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Bart, Philip J (2003): Were West Antarctic Ice Sheet grounding events in the Ross Sea a consequence of East Antarctic Ice Sheet expansion during the middle Miocene? Earth and Planetary Science Letters, 216(1-2), 93-107, https://doi.org/10.1016/S0012-821X(03)00509-0 120-747 28-272 28-273_Site Antarctic Ocean COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg120 Leg28 South Indian Ridge South Indian Ocean Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.722496 https://doi.org/10.1016/S0012-821X(03)00509-0 2023-01-20T07:31:27Z Seismic correlation of glacial unconformities from the Ross Sea outer continental shelf to chronostratigraphic control at DSDP sites 272 and 273 indicates that at least two West Antarctic Ice Sheet (WAIS) expansions occurred during the early part of the middle Miocene (i.e. well before completion of continental-scale expansion of the East Antarctic Ice Sheet (EAIS) inferred from delta18O and eustatic shifts). Therefore, if the volume of the EAIS was indeed relatively low, and if the Ross Sea age model is valid, then these WAIS expansions/contractions were not a direct consequence of EAIS expansion over the Transantarctic Mountains onto West Antarctica. An in-situ development of the WAIS during the middle Miocene suggests that either West Antarctic land elevations were above sea level and/or that air and water temperatures were sufficiently cold to support a marine-based ice sheet. Additional chronostratigraphic and lithologic data are needed from Antarctic margins to test these speculations. Dataset Antarc* Antarctic Antarctic Ocean Antarctica Ice Sheet Ross Sea West Antarctica PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Ocean East Antarctic Ice Sheet Indian Ross Sea Transantarctic Mountains West Antarctic Ice Sheet West Antarctica ENVELOPE(76.794000,-176.760200,-54.811000,-77.127000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
120-747 28-272 28-273_Site Antarctic Ocean COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg120 Leg28 South Indian Ridge South Indian Ocean |
spellingShingle |
120-747 28-272 28-273_Site Antarctic Ocean COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg120 Leg28 South Indian Ridge South Indian Ocean Bart, Philip J Middle Miocene events in ODP and DSDP sites of the Ross Sea |
topic_facet |
120-747 28-272 28-273_Site Antarctic Ocean COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg120 Leg28 South Indian Ridge South Indian Ocean |
description |
Seismic correlation of glacial unconformities from the Ross Sea outer continental shelf to chronostratigraphic control at DSDP sites 272 and 273 indicates that at least two West Antarctic Ice Sheet (WAIS) expansions occurred during the early part of the middle Miocene (i.e. well before completion of continental-scale expansion of the East Antarctic Ice Sheet (EAIS) inferred from delta18O and eustatic shifts). Therefore, if the volume of the EAIS was indeed relatively low, and if the Ross Sea age model is valid, then these WAIS expansions/contractions were not a direct consequence of EAIS expansion over the Transantarctic Mountains onto West Antarctica. An in-situ development of the WAIS during the middle Miocene suggests that either West Antarctic land elevations were above sea level and/or that air and water temperatures were sufficiently cold to support a marine-based ice sheet. Additional chronostratigraphic and lithologic data are needed from Antarctic margins to test these speculations. |
format |
Dataset |
author |
Bart, Philip J |
author_facet |
Bart, Philip J |
author_sort |
Bart, Philip J |
title |
Middle Miocene events in ODP and DSDP sites of the Ross Sea |
title_short |
Middle Miocene events in ODP and DSDP sites of the Ross Sea |
title_full |
Middle Miocene events in ODP and DSDP sites of the Ross Sea |
title_fullStr |
Middle Miocene events in ODP and DSDP sites of the Ross Sea |
title_full_unstemmed |
Middle Miocene events in ODP and DSDP sites of the Ross Sea |
title_sort |
middle miocene events in odp and dsdp sites of the ross sea |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.722496 https://doi.org/10.1594/PANGAEA.722496 |
op_coverage |
MEDIAN LATITUDE: -65.321800 * MEDIAN LONGITUDE: 127.863500 * SOUTH-BOUND LATITUDE: -77.127000 * WEST-BOUND LONGITUDE: 76.794000 * NORTH-BOUND LATITUDE: -54.811000 * EAST-BOUND LONGITUDE: -176.760200 * DATE/TIME START: 1973-02-06T00:00:00 * DATE/TIME END: 1988-03-12T00:00:00 |
long_lat |
ENVELOPE(76.794000,-176.760200,-54.811000,-77.127000) |
geographic |
Antarctic Antarctic Ocean East Antarctic Ice Sheet Indian Ross Sea Transantarctic Mountains West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Antarctic Antarctic Ocean East Antarctic Ice Sheet Indian Ross Sea Transantarctic Mountains West Antarctic Ice Sheet West Antarctica |
genre |
Antarc* Antarctic Antarctic Ocean Antarctica Ice Sheet Ross Sea West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Ocean Antarctica Ice Sheet Ross Sea West Antarctica |
op_source |
Supplement to: Bart, Philip J (2003): Were West Antarctic Ice Sheet grounding events in the Ross Sea a consequence of East Antarctic Ice Sheet expansion during the middle Miocene? Earth and Planetary Science Letters, 216(1-2), 93-107, https://doi.org/10.1016/S0012-821X(03)00509-0 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.722496 https://doi.org/10.1594/PANGAEA.722496 |
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.722496 https://doi.org/10.1016/S0012-821X(03)00509-0 |
_version_ |
1766163489603190784 |