Stable oxygen and carbon isotope ratios of Pliocene benthic foraminifera in the Atlantic Ocean
Large changes in benthic foraminiferal delta180 and delta13C occurred during the Pliocene (between 3.0 and 2.0 Ma) at Hole 665A. Oxygen isotopic compositions increased to maximum values at 2.4 Ma, correlating with an 18O enrichment observed at Hole 552A and other locations (Shackleton et al., 1984)....
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.696223 2023-05-15T17:31:33+02:00 Stable oxygen and carbon isotope ratios of Pliocene benthic foraminifera in the Atlantic Ocean Curry, William B Miller, Kenneth G MEDIAN LATITUDE: 29.496950 * MEDIAN LONGITUDE: -21.449550 * SOUTH-BOUND LATITUDE: 2.951200 * WEST-BOUND LONGITUDE: -23.231300 * NORTH-BOUND LATITUDE: 56.042700 * EAST-BOUND LONGITUDE: -19.667800 * DATE/TIME START: 1981-07-31T00:00:00 * DATE/TIME END: 1986-04-04T19:00:00 1989-06-26 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.696223 https://doi.org/10.1594/PANGAEA.696223 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.696223 https://doi.org/10.1594/PANGAEA.696223 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Curry, William B; Miller, Kenneth G (1989): Oxygen and carbon istotopic variation in Pliocene benthic foraminifers of the equatorial Atlantic. in: Rudimann, W; Sarnthein, M; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 108, 157-166, https://doi.org/10.2973/odp.proc.sr.108.134.1989 108-665A 81-552A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg108 Leg81 North Atlantic/PLATEAU North Atlantic Ocean Ocean Drilling Program ODP Dataset 1989 ftpangaea https://doi.org/10.1594/PANGAEA.696223 https://doi.org/10.2973/odp.proc.sr.108.134.1989 2023-01-20T07:31:12Z Large changes in benthic foraminiferal delta180 and delta13C occurred during the Pliocene (between 3.0 and 2.0 Ma) at Hole 665A. Oxygen isotopic compositions increased to maximum values at 2.4 Ma, correlating with an 18O enrichment observed at Hole 552A and other locations (Shackleton et al., 1984). As at Hole 606 (Keigwin, 1986), however, maximum delta180 values at 2.4 Ma were not as great as at Hole 552A, and enrichments in delta180 also occurred before 2.4 Ma. We believe that the section representing sediments from 2.5 to 2.7 or 2.8 Ma is missing at Hole 552A because of incomplete core recovery. Consequently, the older delta180 increases are not found at Hole 552A. Benthic foraminiferal delta13C values are much lower at Hole 665A than at Hole 552A, approaching the low values observed in the Pliocene Pacific Ocean. This geographic distribution of delta13C suggests that, like late Quaternary glaciations, the equatorial Atlantic Ocean was dominated during the Pliocene by deep water that originated in the Southern Ocean and had chemical characteristics very similar to the Pacific Ocean. Reduced O2 values were probably associated with low delta13C values and contributed to increased preservation of organic carbon during enriched 180 intervals of the Pliocene equatorial Atlantic. Dataset North Atlantic Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Southern Ocean Shackleton Pacific ENVELOPE(-23.231300,-19.667800,56.042700,2.951200) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
108-665A 81-552A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg108 Leg81 North Atlantic/PLATEAU North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
108-665A 81-552A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg108 Leg81 North Atlantic/PLATEAU North Atlantic Ocean Ocean Drilling Program ODP Curry, William B Miller, Kenneth G Stable oxygen and carbon isotope ratios of Pliocene benthic foraminifera in the Atlantic Ocean |
topic_facet |
108-665A 81-552A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg108 Leg81 North Atlantic/PLATEAU North Atlantic Ocean Ocean Drilling Program ODP |
description |
Large changes in benthic foraminiferal delta180 and delta13C occurred during the Pliocene (between 3.0 and 2.0 Ma) at Hole 665A. Oxygen isotopic compositions increased to maximum values at 2.4 Ma, correlating with an 18O enrichment observed at Hole 552A and other locations (Shackleton et al., 1984). As at Hole 606 (Keigwin, 1986), however, maximum delta180 values at 2.4 Ma were not as great as at Hole 552A, and enrichments in delta180 also occurred before 2.4 Ma. We believe that the section representing sediments from 2.5 to 2.7 or 2.8 Ma is missing at Hole 552A because of incomplete core recovery. Consequently, the older delta180 increases are not found at Hole 552A. Benthic foraminiferal delta13C values are much lower at Hole 665A than at Hole 552A, approaching the low values observed in the Pliocene Pacific Ocean. This geographic distribution of delta13C suggests that, like late Quaternary glaciations, the equatorial Atlantic Ocean was dominated during the Pliocene by deep water that originated in the Southern Ocean and had chemical characteristics very similar to the Pacific Ocean. Reduced O2 values were probably associated with low delta13C values and contributed to increased preservation of organic carbon during enriched 180 intervals of the Pliocene equatorial Atlantic. |
format |
Dataset |
author |
Curry, William B Miller, Kenneth G |
author_facet |
Curry, William B Miller, Kenneth G |
author_sort |
Curry, William B |
title |
Stable oxygen and carbon isotope ratios of Pliocene benthic foraminifera in the Atlantic Ocean |
title_short |
Stable oxygen and carbon isotope ratios of Pliocene benthic foraminifera in the Atlantic Ocean |
title_full |
Stable oxygen and carbon isotope ratios of Pliocene benthic foraminifera in the Atlantic Ocean |
title_fullStr |
Stable oxygen and carbon isotope ratios of Pliocene benthic foraminifera in the Atlantic Ocean |
title_full_unstemmed |
Stable oxygen and carbon isotope ratios of Pliocene benthic foraminifera in the Atlantic Ocean |
title_sort |
stable oxygen and carbon isotope ratios of pliocene benthic foraminifera in the atlantic ocean |
publisher |
PANGAEA |
publishDate |
1989 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.696223 https://doi.org/10.1594/PANGAEA.696223 |
op_coverage |
MEDIAN LATITUDE: 29.496950 * MEDIAN LONGITUDE: -21.449550 * SOUTH-BOUND LATITUDE: 2.951200 * WEST-BOUND LONGITUDE: -23.231300 * NORTH-BOUND LATITUDE: 56.042700 * EAST-BOUND LONGITUDE: -19.667800 * DATE/TIME START: 1981-07-31T00:00:00 * DATE/TIME END: 1986-04-04T19:00:00 |
long_lat |
ENVELOPE(-23.231300,-19.667800,56.042700,2.951200) |
geographic |
Southern Ocean Shackleton Pacific |
geographic_facet |
Southern Ocean Shackleton Pacific |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
Supplement to: Curry, William B; Miller, Kenneth G (1989): Oxygen and carbon istotopic variation in Pliocene benthic foraminifers of the equatorial Atlantic. in: Rudimann, W; Sarnthein, M; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 108, 157-166, https://doi.org/10.2973/odp.proc.sr.108.134.1989 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.696223 https://doi.org/10.1594/PANGAEA.696223 |
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.696223 https://doi.org/10.2973/odp.proc.sr.108.134.1989 |
_version_ |
1766129200384704512 |