Stable carbon and oxygen isotope record of Cibicidoides from DSDP/ODP holes
High-resolution delta18O records from the equatorial Pacific (site 503B), equatorial Atlantic (site 665A), and North Atlantic (site 606A) based on the benthic foraminifera Cibicidoides wuellerstorfi show the 2.4 Ma onset of major northern hemispheric glaciation to be a package of three events occurr...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.733972 2023-05-15T17:29:12+02:00 Stable carbon and oxygen isotope record of Cibicidoides from DSDP/ODP holes Sikes, Elisabeth L Keigwin, Lloyd D Curry, William B MEDIAN LATITUDE: 14.779900 * MEDIAN LONGITUDE: -50.268933 * SOUTH-BOUND LATITUDE: 2.951200 * WEST-BOUND LONGITUDE: -95.638700 * NORTH-BOUND LATITUDE: 37.338200 * EAST-BOUND LONGITUDE: -19.667800 * DATE/TIME START: 1979-09-06T00:00:00 * DATE/TIME END: 1986-04-04T19:00:00 1991-02-19 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.733972 https://doi.org/10.1594/PANGAEA.733972 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.733972 https://doi.org/10.1594/PANGAEA.733972 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D; Curry, William B (1991): Pliocene paleoceanography: circulation and oceanographic changes associated with the 2.4 Ma glacial event. Paleoceanography, 6(2), 245-257, https://doi.org/10.1029/90PA02499 108-665A 68-503B 94-606A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg108 Leg68 Leg94 North Atlantic/FLANK North Atlantic Ocean North Pacific/FLANK Ocean Drilling Program ODP Dataset 1991 ftpangaea https://doi.org/10.1594/PANGAEA.733972 https://doi.org/10.1029/90PA02499 2023-01-20T07:31:39Z High-resolution delta18O records from the equatorial Pacific (site 503B), equatorial Atlantic (site 665A), and North Atlantic (site 606A) based on the benthic foraminifera Cibicidoides wuellerstorfi show the 2.4 Ma onset of major northern hemispheric glaciation to be a package of three events occurring at 2.39, 2.35, and 2.31 Ma in which a periodicity of about 40 kyr is evident. The amplitude of the signals at the three sites indicates that these events were 1/2 to 2/3 the size of the latest Quaternary glaciation and also indicates cooling of northern source bottom water by 2.7°-4.1°C relative to southern source water during glaciations. Carbon isotopes indicate that southern source waters were less oxygenated than in the Quaternary and that there was reduced production of northern source water during glacial intervals. The dominant presence of southern source water in the eastern basin of the equatorial Atlantic, regardless of climatic cycles, throughout the late Pliocene indicates a greater influence of these waters relative to northern source waters in the late Pliocene ocean. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(-95.638700,-19.667800,37.338200,2.951200) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
108-665A 68-503B 94-606A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg108 Leg68 Leg94 North Atlantic/FLANK North Atlantic Ocean North Pacific/FLANK Ocean Drilling Program ODP |
spellingShingle |
108-665A 68-503B 94-606A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg108 Leg68 Leg94 North Atlantic/FLANK North Atlantic Ocean North Pacific/FLANK Ocean Drilling Program ODP Sikes, Elisabeth L Keigwin, Lloyd D Curry, William B Stable carbon and oxygen isotope record of Cibicidoides from DSDP/ODP holes |
topic_facet |
108-665A 68-503B 94-606A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg108 Leg68 Leg94 North Atlantic/FLANK North Atlantic Ocean North Pacific/FLANK Ocean Drilling Program ODP |
description |
High-resolution delta18O records from the equatorial Pacific (site 503B), equatorial Atlantic (site 665A), and North Atlantic (site 606A) based on the benthic foraminifera Cibicidoides wuellerstorfi show the 2.4 Ma onset of major northern hemispheric glaciation to be a package of three events occurring at 2.39, 2.35, and 2.31 Ma in which a periodicity of about 40 kyr is evident. The amplitude of the signals at the three sites indicates that these events were 1/2 to 2/3 the size of the latest Quaternary glaciation and also indicates cooling of northern source bottom water by 2.7°-4.1°C relative to southern source water during glaciations. Carbon isotopes indicate that southern source waters were less oxygenated than in the Quaternary and that there was reduced production of northern source water during glacial intervals. The dominant presence of southern source water in the eastern basin of the equatorial Atlantic, regardless of climatic cycles, throughout the late Pliocene indicates a greater influence of these waters relative to northern source waters in the late Pliocene ocean. |
format |
Dataset |
author |
Sikes, Elisabeth L Keigwin, Lloyd D Curry, William B |
author_facet |
Sikes, Elisabeth L Keigwin, Lloyd D Curry, William B |
author_sort |
Sikes, Elisabeth L |
title |
Stable carbon and oxygen isotope record of Cibicidoides from DSDP/ODP holes |
title_short |
Stable carbon and oxygen isotope record of Cibicidoides from DSDP/ODP holes |
title_full |
Stable carbon and oxygen isotope record of Cibicidoides from DSDP/ODP holes |
title_fullStr |
Stable carbon and oxygen isotope record of Cibicidoides from DSDP/ODP holes |
title_full_unstemmed |
Stable carbon and oxygen isotope record of Cibicidoides from DSDP/ODP holes |
title_sort |
stable carbon and oxygen isotope record of cibicidoides from dsdp/odp holes |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.733972 https://doi.org/10.1594/PANGAEA.733972 |
op_coverage |
MEDIAN LATITUDE: 14.779900 * MEDIAN LONGITUDE: -50.268933 * SOUTH-BOUND LATITUDE: 2.951200 * WEST-BOUND LONGITUDE: -95.638700 * NORTH-BOUND LATITUDE: 37.338200 * EAST-BOUND LONGITUDE: -19.667800 * DATE/TIME START: 1979-09-06T00:00:00 * DATE/TIME END: 1986-04-04T19:00:00 |
long_lat |
ENVELOPE(-95.638700,-19.667800,37.338200,2.951200) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D; Curry, William B (1991): Pliocene paleoceanography: circulation and oceanographic changes associated with the 2.4 Ma glacial event. Paleoceanography, 6(2), 245-257, https://doi.org/10.1029/90PA02499 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.733972 https://doi.org/10.1594/PANGAEA.733972 |
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.733972 https://doi.org/10.1029/90PA02499 |
_version_ |
1766122837461958656 |