Sea surface temperatures reconstructed from sediment core U1338 ...
This study presents a new alkenone-derived Sea Surface Temperature (SST) record and d18ONoelaerhabdaceae data of the 2-5 µm carbonate fractions from the IODP site U1338 located in the Eastern Equatorial Pacific (EEP), over the Miocene-Pliocene. Our data and those available from other sites of the sa...
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Online Access: | https://dx.doi.org/10.1594/pangaea.804718 https://doi.pangaea.de/10.1594/PANGAEA.804718 |
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ftdatacite:10.1594/pangaea.804718 2024-09-15T18:12:30+00:00 Sea surface temperatures reconstructed from sediment core U1338 ... Rousselle, Gabrielle Beltran, Catherine Sicre, Marie-Alexandrine Raffi, Isabella De Refélis, Marc 2013 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.804718 https://doi.pangaea.de/10.1594/PANGAEA.804718 en eng PANGAEA https://dx.doi.org/10.1016/j.epsl.2012.11.003 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Sample code/label DEPTH, sediment/rock AGE n-Alkane C37 Alkenone, unsaturation index UK'37 Sea surface temperature δ18O, carbonate Composite Core Gas chromatography - Mass spectrometry GC-MS Calculated from C37 alkenones Prahl & Wakeham, 1987 Calculated from UK'37 Müller et al, 1998 Calculated from UK37 Conte et al., 2006 Isotope ratio mass spectrometry Exp321 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP dataset Supplementary Dataset Dataset 2013 ftdatacite https://doi.org/10.1594/pangaea.80471810.1016/j.epsl.2012.11.003 2024-08-01T10:57:41Z This study presents a new alkenone-derived Sea Surface Temperature (SST) record and d18ONoelaerhabdaceae data of the 2-5 µm carbonate fractions from the IODP site U1338 located in the Eastern Equatorial Pacific (EEP), over the Miocene-Pliocene. Our data and those available from other sites of the same area show the establishment of a cold tongue during the early Pliocene (4.4 - 3.6 Ma). SST and d18ONoelaerhabdaceae time-series indicate periods of significant salinity variations. Comparison with the d18Obenthic curve from sediment cores of the Equatorial Pacific Ocean allow us to distinguish between global changes and local surface salinity variations in the EEP. Ice sheet growth and evaporation-precipitation are then discussed as possible drivers of such changes, as well as the role of Central American and the Indonesian seaway restriction. Our data suggest a shallowing of the thermocline in the EEP, between 6.8 and 6 Ma, and its shoaling between 4.8 and 4.0 Ma, suggesting the appearance of the cold tongue ... : Supplement to: Rousselle, Gabrielle; Beltran, Catherine; Sicre, Marie-Alexandrine; Raffi, Isabella; De Refélis, Marc (2013): Changes in sea-surface conditions in the Equatorial Pacific during the middle Miocene–Pliocene as inferred from coccolith geochemistry. Earth and Planetary Science Letters, 361, 412-421 ... Dataset Ice Sheet DataCite |
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Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
Sample code/label DEPTH, sediment/rock AGE n-Alkane C37 Alkenone, unsaturation index UK'37 Sea surface temperature δ18O, carbonate Composite Core Gas chromatography - Mass spectrometry GC-MS Calculated from C37 alkenones Prahl & Wakeham, 1987 Calculated from UK'37 Müller et al, 1998 Calculated from UK37 Conte et al., 2006 Isotope ratio mass spectrometry Exp321 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
spellingShingle |
Sample code/label DEPTH, sediment/rock AGE n-Alkane C37 Alkenone, unsaturation index UK'37 Sea surface temperature δ18O, carbonate Composite Core Gas chromatography - Mass spectrometry GC-MS Calculated from C37 alkenones Prahl & Wakeham, 1987 Calculated from UK'37 Müller et al, 1998 Calculated from UK37 Conte et al., 2006 Isotope ratio mass spectrometry Exp321 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Rousselle, Gabrielle Beltran, Catherine Sicre, Marie-Alexandrine Raffi, Isabella De Refélis, Marc Sea surface temperatures reconstructed from sediment core U1338 ... |
topic_facet |
Sample code/label DEPTH, sediment/rock AGE n-Alkane C37 Alkenone, unsaturation index UK'37 Sea surface temperature δ18O, carbonate Composite Core Gas chromatography - Mass spectrometry GC-MS Calculated from C37 alkenones Prahl & Wakeham, 1987 Calculated from UK'37 Müller et al, 1998 Calculated from UK37 Conte et al., 2006 Isotope ratio mass spectrometry Exp321 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
description |
This study presents a new alkenone-derived Sea Surface Temperature (SST) record and d18ONoelaerhabdaceae data of the 2-5 µm carbonate fractions from the IODP site U1338 located in the Eastern Equatorial Pacific (EEP), over the Miocene-Pliocene. Our data and those available from other sites of the same area show the establishment of a cold tongue during the early Pliocene (4.4 - 3.6 Ma). SST and d18ONoelaerhabdaceae time-series indicate periods of significant salinity variations. Comparison with the d18Obenthic curve from sediment cores of the Equatorial Pacific Ocean allow us to distinguish between global changes and local surface salinity variations in the EEP. Ice sheet growth and evaporation-precipitation are then discussed as possible drivers of such changes, as well as the role of Central American and the Indonesian seaway restriction. Our data suggest a shallowing of the thermocline in the EEP, between 6.8 and 6 Ma, and its shoaling between 4.8 and 4.0 Ma, suggesting the appearance of the cold tongue ... : Supplement to: Rousselle, Gabrielle; Beltran, Catherine; Sicre, Marie-Alexandrine; Raffi, Isabella; De Refélis, Marc (2013): Changes in sea-surface conditions in the Equatorial Pacific during the middle Miocene–Pliocene as inferred from coccolith geochemistry. Earth and Planetary Science Letters, 361, 412-421 ... |
format |
Dataset |
author |
Rousselle, Gabrielle Beltran, Catherine Sicre, Marie-Alexandrine Raffi, Isabella De Refélis, Marc |
author_facet |
Rousselle, Gabrielle Beltran, Catherine Sicre, Marie-Alexandrine Raffi, Isabella De Refélis, Marc |
author_sort |
Rousselle, Gabrielle |
title |
Sea surface temperatures reconstructed from sediment core U1338 ... |
title_short |
Sea surface temperatures reconstructed from sediment core U1338 ... |
title_full |
Sea surface temperatures reconstructed from sediment core U1338 ... |
title_fullStr |
Sea surface temperatures reconstructed from sediment core U1338 ... |
title_full_unstemmed |
Sea surface temperatures reconstructed from sediment core U1338 ... |
title_sort |
sea surface temperatures reconstructed from sediment core u1338 ... |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://dx.doi.org/10.1594/pangaea.804718 https://doi.pangaea.de/10.1594/PANGAEA.804718 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://dx.doi.org/10.1016/j.epsl.2012.11.003 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.80471810.1016/j.epsl.2012.11.003 |
_version_ |
1810450092816072704 |