Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea
A moderate-resolution isotope stratigraphy (with an average of one sample per 17,500 yr.) derived from the benthic foraminifer Uvigerina (or Cibicides), the planktonic foraminifer Globigerina bulloides, and calcareous nannofossil concentrates is presented for the entire Quaternary (and latest Plioce...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.683884 2023-05-15T13:42:09+02:00 Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea Nelson, Campbell S Hendy, Chris H Dudley, Walter C LATITUDE: -40.507800 * LONGITUDE: 167.674500 * DATE/TIME START: 1982-12-28T00:00:00 * DATE/TIME END: 1982-12-28T00:00:00 1986-02-27 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.683884 https://doi.org/10.1594/PANGAEA.683884 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.683884 https://doi.org/10.1594/PANGAEA.683884 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Nelson, Campbell S; Hendy, Chris H; Dudley, Walter C (1986): Quaternary isotope stratigraphy of Hole 593, Challenger Plateau, South Tasman Sea: Preliminary observations based on foraminifers and calcareous nannofossils. In: Kennett, JP; von der Borch, CC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 90, 1413-1424, https://doi.org/10.2973/dsdp.proc.90.143.1986 90-593 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg90 South Pacific/Tasman Sea/PLATEAU Dataset 1986 ftpangaea https://doi.org/10.1594/PANGAEA.683884 https://doi.org/10.2973/dsdp.proc.90.143.1986 2023-01-20T07:31:08Z A moderate-resolution isotope stratigraphy (with an average of one sample per 17,500 yr.) derived from the benthic foraminifer Uvigerina (or Cibicides), the planktonic foraminifer Globigerina bulloides, and calcareous nannofossil concentrates is presented for the entire Quaternary (and latest Pliocene) section of mid-upper bathyal calcareous oozes from DSDP Site 593, western Challenger Plateau, south Tasman Sea. Superimposed on a trend of gradually increasing average delta18O values through the Pleistocene, reflecting the progressive buildup of polar ice sheets, is a record of highfrequency but generally low amplitude (0.5-1‰) isotope fluctuations in the early Quaternary (1.9-1.0 m.y.), followed by a greatly increased intensity (1.5-2.0 ‰) of glacial-interglacial fluctuations during the late Quaternary (< 1.0 m.y.). The standard late Quaternary isotope stages 1 to 24 are mainly resolvable. Significant excursions in both delta18O and delta13C values at various times during the Quaternary are suggested to be due to periodic, fundamental changes in ocean circulation properties over the plateau. For example, intensified upwelling of Antarctic Intermediate Waters during several glacial periods is indicated by the convergence of benthic and planktonic foraminiferal delta18O data, and productivity variations may account for certain delta13C spikes in the record. With increasingly higher resolution analysis this core will provide a useful Quaternary isotope reference section for southern temperate waters in the southwest Pacific, centered on New Zealand. Dataset Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic New Zealand Pacific ENVELOPE(167.674500,167.674500,-40.507800,-40.507800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
90-593 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg90 South Pacific/Tasman Sea/PLATEAU |
spellingShingle |
90-593 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg90 South Pacific/Tasman Sea/PLATEAU Nelson, Campbell S Hendy, Chris H Dudley, Walter C Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea |
topic_facet |
90-593 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg90 South Pacific/Tasman Sea/PLATEAU |
description |
A moderate-resolution isotope stratigraphy (with an average of one sample per 17,500 yr.) derived from the benthic foraminifer Uvigerina (or Cibicides), the planktonic foraminifer Globigerina bulloides, and calcareous nannofossil concentrates is presented for the entire Quaternary (and latest Pliocene) section of mid-upper bathyal calcareous oozes from DSDP Site 593, western Challenger Plateau, south Tasman Sea. Superimposed on a trend of gradually increasing average delta18O values through the Pleistocene, reflecting the progressive buildup of polar ice sheets, is a record of highfrequency but generally low amplitude (0.5-1‰) isotope fluctuations in the early Quaternary (1.9-1.0 m.y.), followed by a greatly increased intensity (1.5-2.0 ‰) of glacial-interglacial fluctuations during the late Quaternary (< 1.0 m.y.). The standard late Quaternary isotope stages 1 to 24 are mainly resolvable. Significant excursions in both delta18O and delta13C values at various times during the Quaternary are suggested to be due to periodic, fundamental changes in ocean circulation properties over the plateau. For example, intensified upwelling of Antarctic Intermediate Waters during several glacial periods is indicated by the convergence of benthic and planktonic foraminiferal delta18O data, and productivity variations may account for certain delta13C spikes in the record. With increasingly higher resolution analysis this core will provide a useful Quaternary isotope reference section for southern temperate waters in the southwest Pacific, centered on New Zealand. |
format |
Dataset |
author |
Nelson, Campbell S Hendy, Chris H Dudley, Walter C |
author_facet |
Nelson, Campbell S Hendy, Chris H Dudley, Walter C |
author_sort |
Nelson, Campbell S |
title |
Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea |
title_short |
Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea |
title_full |
Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea |
title_fullStr |
Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea |
title_full_unstemmed |
Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea |
title_sort |
quaternary isotope stratigraphy of dsdp hole 90-593 from the challenegr plateau, south tasman sea |
publisher |
PANGAEA |
publishDate |
1986 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.683884 https://doi.org/10.1594/PANGAEA.683884 |
op_coverage |
LATITUDE: -40.507800 * LONGITUDE: 167.674500 * DATE/TIME START: 1982-12-28T00:00:00 * DATE/TIME END: 1982-12-28T00:00:00 |
long_lat |
ENVELOPE(167.674500,167.674500,-40.507800,-40.507800) |
geographic |
Antarctic New Zealand Pacific |
geographic_facet |
Antarctic New Zealand Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Nelson, Campbell S; Hendy, Chris H; Dudley, Walter C (1986): Quaternary isotope stratigraphy of Hole 593, Challenger Plateau, South Tasman Sea: Preliminary observations based on foraminifers and calcareous nannofossils. In: Kennett, JP; von der Borch, CC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 90, 1413-1424, https://doi.org/10.2973/dsdp.proc.90.143.1986 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.683884 https://doi.org/10.1594/PANGAEA.683884 |
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.683884 https://doi.org/10.2973/dsdp.proc.90.143.1986 |
_version_ |
1766163298227585024 |