Sea-surface temperature reconstructions for the Quaternary western Atlantic
Paleotemperature estimates calculated by the SIMMAX Modern Analog Technique are presented for two gravity cores from the Rio Grande Rise, one from the Brazil Slope, and one from the Ceara Rise. The estimates are based on comparisons between modern and fossil planktonic foraminiferal assemblages and...
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1999
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.701452 https://doi.org/10.1594/PANGAEA.701452 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.701452 2023-05-15T17:15:01+02:00 Sea-surface temperature reconstructions for the Quaternary western Atlantic Hale, Walter Pflaumann, Uwe MEDIAN LATITUDE: -19.218723 * MEDIAN LONGITUDE: -26.575585 * SOUTH-BOUND LATITUDE: -31.666667 * WEST-BOUND LONGITUDE: -45.881667 * NORTH-BOUND LATITUDE: 3.831667 * EAST-BOUND LONGITUDE: 10.951717 * DATE/TIME START: 1988-02-20T00:00:00 * DATE/TIME END: 1996-03-01T00:00:00 1999-07-18 application/zip, 17 datasets https://doi.pangaea.de/10.1594/PANGAEA.701452 https://doi.org/10.1594/PANGAEA.701452 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.701452 https://doi.org/10.1594/PANGAEA.701452 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Hale, Walter; Pflaumann, Uwe (1999): Sea-surface Temperature Estimations using a Modern Analog Technique with Foraminiferal Assemblages from Western Atlantic Quaternary Sediments. In: Fischer, G & Wefer, G (eds.), Use of Proxies in Paleoceanography - Examples from the South Atlantic, Springer, Berlin, Heidelberg, 69-90 06MT15_2 Amazon Fan Angola Basin Argentine Basin Brazil Basin Eastern Rio Grande Rise Equatorial Atlantic GeoB1007-4 GeoB1105-4 GeoB1309-2 GeoB1312-2 GeoB1523-1 GeoB1701-4 GeoB2109-1 GeoB2204-2 GeoB2819-1 GeoB3808-6 Gravity corer (Kiel type) M15/2 M16/2 M20/2 M23/2 M23/3 M29/2 M34/3 M6/6 M9/4 Meteor (1986) Mid Atlantic Ridge Niger Sediment Fan Rio Grande Rise SFB261 SL South Atlantic in Late Quaternary: Reconstruction of Budget and Currents Dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.701452 2023-01-20T07:31:13Z Paleotemperature estimates calculated by the SIMMAX Modern Analog Technique are presented for two gravity cores from the Rio Grande Rise, one from the Brazil Slope, and one from the Ceara Rise. The estimates are based on comparisons between modern and fossil planktonic foraminiferal assemblages and were carried out on samples from Quaternary sediments. Estimated warm-season temperatures from the Rio Grande Rise (at approx. 30° S) range from around 19°C to 24°C, with some coincidence of warm peaks with interglacial stages. The temperature estimates (also warm-season) from the more tropical Brazil Slope (at approx. 8° S) and Ceara Rise (at approx. 4° N) cores are more stable, remaining between 26°C and 28°C throughout most of their lengths. This fairly stable situation in the tropical western Atlantic is interrupted in oxygen isotope stage 6 by a significant drop of 2-3°C in both of these cores. Temperature estimates from the uppermost samples in all cores compare very well to the modern-day measured values. Affinities of some foraminiferal species for warmer or cooler surface temperatures are identified within the temperature range of the examined samples based on their abundance values. Especially notable among the warmer species are, Globorotalia menardii, Globigerinita glutinata, Globigerinoides ruber, and Globigerinoides sacculifer. Species indicative of cooler surface temperatures include Globorotalia inflata, Globigerina bulloides, Neogloboquadrina pachyderma, and Globigerina falconensis. A cluster analysis was carried out to assist in understanding the degree of variation which occurs in the foraminiferal assemblages, and how temperature differences influence the faunal compositions of the samples. It is demonstrated that fairly similar samples may have unexpectedly different estimated temperatures due to small differences in key species and, conversely, quite different assemblages can result in similar or identical temperature estimates which confirms that other parameters than just temperature affect ... Dataset Neogloboquadrina pachyderma PANGAEA - Data Publisher for Earth & Environmental Science Argentine Mid-Atlantic Ridge ENVELOPE(-45.881667,10.951717,3.831667,-31.666667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
06MT15_2 Amazon Fan Angola Basin Argentine Basin Brazil Basin Eastern Rio Grande Rise Equatorial Atlantic GeoB1007-4 GeoB1105-4 GeoB1309-2 GeoB1312-2 GeoB1523-1 GeoB1701-4 GeoB2109-1 GeoB2204-2 GeoB2819-1 GeoB3808-6 Gravity corer (Kiel type) M15/2 M16/2 M20/2 M23/2 M23/3 M29/2 M34/3 M6/6 M9/4 Meteor (1986) Mid Atlantic Ridge Niger Sediment Fan Rio Grande Rise SFB261 SL South Atlantic in Late Quaternary: Reconstruction of Budget and Currents |
spellingShingle |
06MT15_2 Amazon Fan Angola Basin Argentine Basin Brazil Basin Eastern Rio Grande Rise Equatorial Atlantic GeoB1007-4 GeoB1105-4 GeoB1309-2 GeoB1312-2 GeoB1523-1 GeoB1701-4 GeoB2109-1 GeoB2204-2 GeoB2819-1 GeoB3808-6 Gravity corer (Kiel type) M15/2 M16/2 M20/2 M23/2 M23/3 M29/2 M34/3 M6/6 M9/4 Meteor (1986) Mid Atlantic Ridge Niger Sediment Fan Rio Grande Rise SFB261 SL South Atlantic in Late Quaternary: Reconstruction of Budget and Currents Hale, Walter Pflaumann, Uwe Sea-surface temperature reconstructions for the Quaternary western Atlantic |
topic_facet |
06MT15_2 Amazon Fan Angola Basin Argentine Basin Brazil Basin Eastern Rio Grande Rise Equatorial Atlantic GeoB1007-4 GeoB1105-4 GeoB1309-2 GeoB1312-2 GeoB1523-1 GeoB1701-4 GeoB2109-1 GeoB2204-2 GeoB2819-1 GeoB3808-6 Gravity corer (Kiel type) M15/2 M16/2 M20/2 M23/2 M23/3 M29/2 M34/3 M6/6 M9/4 Meteor (1986) Mid Atlantic Ridge Niger Sediment Fan Rio Grande Rise SFB261 SL South Atlantic in Late Quaternary: Reconstruction of Budget and Currents |
description |
Paleotemperature estimates calculated by the SIMMAX Modern Analog Technique are presented for two gravity cores from the Rio Grande Rise, one from the Brazil Slope, and one from the Ceara Rise. The estimates are based on comparisons between modern and fossil planktonic foraminiferal assemblages and were carried out on samples from Quaternary sediments. Estimated warm-season temperatures from the Rio Grande Rise (at approx. 30° S) range from around 19°C to 24°C, with some coincidence of warm peaks with interglacial stages. The temperature estimates (also warm-season) from the more tropical Brazil Slope (at approx. 8° S) and Ceara Rise (at approx. 4° N) cores are more stable, remaining between 26°C and 28°C throughout most of their lengths. This fairly stable situation in the tropical western Atlantic is interrupted in oxygen isotope stage 6 by a significant drop of 2-3°C in both of these cores. Temperature estimates from the uppermost samples in all cores compare very well to the modern-day measured values. Affinities of some foraminiferal species for warmer or cooler surface temperatures are identified within the temperature range of the examined samples based on their abundance values. Especially notable among the warmer species are, Globorotalia menardii, Globigerinita glutinata, Globigerinoides ruber, and Globigerinoides sacculifer. Species indicative of cooler surface temperatures include Globorotalia inflata, Globigerina bulloides, Neogloboquadrina pachyderma, and Globigerina falconensis. A cluster analysis was carried out to assist in understanding the degree of variation which occurs in the foraminiferal assemblages, and how temperature differences influence the faunal compositions of the samples. It is demonstrated that fairly similar samples may have unexpectedly different estimated temperatures due to small differences in key species and, conversely, quite different assemblages can result in similar or identical temperature estimates which confirms that other parameters than just temperature affect ... |
format |
Dataset |
author |
Hale, Walter Pflaumann, Uwe |
author_facet |
Hale, Walter Pflaumann, Uwe |
author_sort |
Hale, Walter |
title |
Sea-surface temperature reconstructions for the Quaternary western Atlantic |
title_short |
Sea-surface temperature reconstructions for the Quaternary western Atlantic |
title_full |
Sea-surface temperature reconstructions for the Quaternary western Atlantic |
title_fullStr |
Sea-surface temperature reconstructions for the Quaternary western Atlantic |
title_full_unstemmed |
Sea-surface temperature reconstructions for the Quaternary western Atlantic |
title_sort |
sea-surface temperature reconstructions for the quaternary western atlantic |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.701452 https://doi.org/10.1594/PANGAEA.701452 |
op_coverage |
MEDIAN LATITUDE: -19.218723 * MEDIAN LONGITUDE: -26.575585 * SOUTH-BOUND LATITUDE: -31.666667 * WEST-BOUND LONGITUDE: -45.881667 * NORTH-BOUND LATITUDE: 3.831667 * EAST-BOUND LONGITUDE: 10.951717 * DATE/TIME START: 1988-02-20T00:00:00 * DATE/TIME END: 1996-03-01T00:00:00 |
long_lat |
ENVELOPE(-45.881667,10.951717,3.831667,-31.666667) |
geographic |
Argentine Mid-Atlantic Ridge |
geographic_facet |
Argentine Mid-Atlantic Ridge |
genre |
Neogloboquadrina pachyderma |
genre_facet |
Neogloboquadrina pachyderma |
op_source |
Supplement to: Hale, Walter; Pflaumann, Uwe (1999): Sea-surface Temperature Estimations using a Modern Analog Technique with Foraminiferal Assemblages from Western Atlantic Quaternary Sediments. In: Fischer, G & Wefer, G (eds.), Use of Proxies in Paleoceanography - Examples from the South Atlantic, Springer, Berlin, Heidelberg, 69-90 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.701452 https://doi.org/10.1594/PANGAEA.701452 |
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.701452 |
_version_ |
1766073161148792832 |