Oxygen isotope composition of benthic and planktonic foraminifera from ODP Holes 146-893A and 167-1017B
The detailed structure and timing of the penultimate deglaciation are insufficiently defined yet critical for understanding mechanisms responsible for abrupt climate change. Here we present oxygen isotope records (from planktonic and benthic foraminifera) at unprecedented resolution encompassing lat...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.721804 2023-05-15T18:00:56+02:00 Oxygen isotope composition of benthic and planktonic foraminifera from ODP Holes 146-893A and 167-1017B Cannariato, Kevin G Kennett, James P MEDIAN LATITUDE: 34.411200 * MEDIAN LONGITUDE: -120.571000 * SOUTH-BOUND LATITUDE: 34.287500 * WEST-BOUND LONGITUDE: -121.106000 * NORTH-BOUND LATITUDE: 34.534900 * EAST-BOUND LONGITUDE: -120.036000 * DATE/TIME START: 1992-11-20T10:30:00 * DATE/TIME END: 1996-05-27T00:00:00 2005-06-23 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.721804 https://doi.org/10.1594/PANGAEA.721804 en eng PANGAEA GSA data repository - Material for structure of the penultimate deglaciation along the California margin (URI: ftp://rock.geosociety.org/pub/reposit/2005/2005018.pdf) https://doi.pangaea.de/10.1594/PANGAEA.721804 https://doi.org/10.1594/PANGAEA.721804 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Cannariato, Kevin G; Kennett, James P (2005): Structure of the penultimate deglaciation along the California margin and implications for Milankovitch theory. Geology, 33(2), 157-160, https://doi.org/10.1130/G21065.1 146-893A 167-1017B DRILL Drilling/drill rig Joides Resolution Leg146 Leg167 North Pacific Ocean Ocean Drilling Program ODP Dataset 2005 ftpangaea https://doi.org/10.1594/PANGAEA.721804 https://doi.org/10.1130/G21065.1 2023-01-20T07:31:25Z The detailed structure and timing of the penultimate deglaciation are insufficiently defined yet critical for understanding mechanisms responsible for abrupt climate change. Here we present oxygen isotope records (from planktonic and benthic foraminifera) at unprecedented resolution encompassing late marine oxygen isotope stage (MIS) 6 and Termination II (ca. 150-120 ka) from the Santa Barbara Basin, supported by additional southern California margin records, a region highly sensitive to millennial-scale climate oscillations during the last deglaciation. These records reveal millennial- and centennial-scale climate variability throughout the interval, including an interstadial immediately preceding the deglaciation, a brief warm event near the beginning of Termination II, and a Bølling-Allerød-Younger Dryas-like climate oscillation midway through the deglaciation. Recognition of these events in an oxygen isotope record from a 230Th-dated stalagmite allows the adoption of this radiometric chronology for the California margin records. This chronology supports the Milankovitch theory of deglaciation. The suborbital history of climate variability during Termination II may account for records of early deglaciation. Dataset Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(-121.106000,-120.036000,34.534900,34.287500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
146-893A 167-1017B DRILL Drilling/drill rig Joides Resolution Leg146 Leg167 North Pacific Ocean Ocean Drilling Program ODP |
spellingShingle |
146-893A 167-1017B DRILL Drilling/drill rig Joides Resolution Leg146 Leg167 North Pacific Ocean Ocean Drilling Program ODP Cannariato, Kevin G Kennett, James P Oxygen isotope composition of benthic and planktonic foraminifera from ODP Holes 146-893A and 167-1017B |
topic_facet |
146-893A 167-1017B DRILL Drilling/drill rig Joides Resolution Leg146 Leg167 North Pacific Ocean Ocean Drilling Program ODP |
description |
The detailed structure and timing of the penultimate deglaciation are insufficiently defined yet critical for understanding mechanisms responsible for abrupt climate change. Here we present oxygen isotope records (from planktonic and benthic foraminifera) at unprecedented resolution encompassing late marine oxygen isotope stage (MIS) 6 and Termination II (ca. 150-120 ka) from the Santa Barbara Basin, supported by additional southern California margin records, a region highly sensitive to millennial-scale climate oscillations during the last deglaciation. These records reveal millennial- and centennial-scale climate variability throughout the interval, including an interstadial immediately preceding the deglaciation, a brief warm event near the beginning of Termination II, and a Bølling-Allerød-Younger Dryas-like climate oscillation midway through the deglaciation. Recognition of these events in an oxygen isotope record from a 230Th-dated stalagmite allows the adoption of this radiometric chronology for the California margin records. This chronology supports the Milankovitch theory of deglaciation. The suborbital history of climate variability during Termination II may account for records of early deglaciation. |
format |
Dataset |
author |
Cannariato, Kevin G Kennett, James P |
author_facet |
Cannariato, Kevin G Kennett, James P |
author_sort |
Cannariato, Kevin G |
title |
Oxygen isotope composition of benthic and planktonic foraminifera from ODP Holes 146-893A and 167-1017B |
title_short |
Oxygen isotope composition of benthic and planktonic foraminifera from ODP Holes 146-893A and 167-1017B |
title_full |
Oxygen isotope composition of benthic and planktonic foraminifera from ODP Holes 146-893A and 167-1017B |
title_fullStr |
Oxygen isotope composition of benthic and planktonic foraminifera from ODP Holes 146-893A and 167-1017B |
title_full_unstemmed |
Oxygen isotope composition of benthic and planktonic foraminifera from ODP Holes 146-893A and 167-1017B |
title_sort |
oxygen isotope composition of benthic and planktonic foraminifera from odp holes 146-893a and 167-1017b |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.721804 https://doi.org/10.1594/PANGAEA.721804 |
op_coverage |
MEDIAN LATITUDE: 34.411200 * MEDIAN LONGITUDE: -120.571000 * SOUTH-BOUND LATITUDE: 34.287500 * WEST-BOUND LONGITUDE: -121.106000 * NORTH-BOUND LATITUDE: 34.534900 * EAST-BOUND LONGITUDE: -120.036000 * DATE/TIME START: 1992-11-20T10:30:00 * DATE/TIME END: 1996-05-27T00:00:00 |
long_lat |
ENVELOPE(-121.106000,-120.036000,34.534900,34.287500) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Supplement to: Cannariato, Kevin G; Kennett, James P (2005): Structure of the penultimate deglaciation along the California margin and implications for Milankovitch theory. Geology, 33(2), 157-160, https://doi.org/10.1130/G21065.1 |
op_relation |
GSA data repository - Material for structure of the penultimate deglaciation along the California margin (URI: ftp://rock.geosociety.org/pub/reposit/2005/2005018.pdf) https://doi.pangaea.de/10.1594/PANGAEA.721804 https://doi.org/10.1594/PANGAEA.721804 |
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.721804 https://doi.org/10.1130/G21065.1 |
_version_ |
1766170225140563968 |