Magnesium/Calcium ratios measured on planktonic foraminifera of the LGM
As part of the Multi-proxy Approach for the Reconstruction of the Glacial Ocean (MARGO) incentive, published and unpublished temperature reconstructions for the Last Glacial Maximum (LGM) based on planktonic foraminiferal Mg/Ca ratios have been synthesised and made available in an online database. D...
Main Authors: | , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2011
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.773256 https://doi.org/10.1594/PANGAEA.773256 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.773256 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.773256 2023-05-15T18:00:58+02:00 Magnesium/Calcium ratios measured on planktonic foraminifera of the LGM Barker, Stephen Cacho, Isabel Benway, Heather M Tachikawa, Kazuyo 2011-12-30 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.773256 https://doi.org/10.1594/PANGAEA.773256 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.773256 https://doi.org/10.1594/PANGAEA.773256 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Barker, Stephen; Cacho, Isabel; Benway, Heather M; Tachikawa, Kazuyo (2005): Planktonic foraminiferal Mg/Ca as a proxy for past oceanic temperatures: a methodological overview and data compilation for the Last Glacial Maximum. Quaternary Science Reviews, 24(7-9), 821-834, https://doi.org/10.1016/j.quascirev.2004.07.016 LIT Literary studies MARGO MARGO_0000 Multiproxy Approach for the Reconstruction of the Glacial Ocean surface Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.773256 https://doi.org/10.1016/j.quascirev.2004.07.016 2023-01-20T07:32:21Z As part of the Multi-proxy Approach for the Reconstruction of the Glacial Ocean (MARGO) incentive, published and unpublished temperature reconstructions for the Last Glacial Maximum (LGM) based on planktonic foraminiferal Mg/Ca ratios have been synthesised and made available in an online database. Development and applications of Mg/Ca thermometry are described in order to illustrate the current state of the method. Various attempts to calibrate foraminiferal Mg/Ca ratios with temperature, including culture, trap and core-top approaches have given very consistent results although differences in methodological techniques can produce offsets between laboratories which need to be assessed and accounted for where possible. Dissolution of foraminiferal calcite at the sea-floor generally causes a lowering of Mg/Ca ratios. This effect requires further study in order to account and potentially correct for it if dissolution has occurred. Mg/Ca thermometry has advantages over other paleotemperature proxies including its use to investigate changes in the oxygen isotopic composition of seawater and the ability to reconstruct changes in the thermal structure of the water column by use of multiple species from different depth and or seasonal habitats. Presently available data are somewhat limited to low latitudes where they give fairly consistent values for the temperature difference between Late Holocene and the LGM (2-3.5 °C). Data from higher latitudes are more sparse, and suggest there may be complicating factors when comparing between multi-proxy reconstructions. Dataset Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
LIT Literary studies MARGO MARGO_0000 Multiproxy Approach for the Reconstruction of the Glacial Ocean surface |
spellingShingle |
LIT Literary studies MARGO MARGO_0000 Multiproxy Approach for the Reconstruction of the Glacial Ocean surface Barker, Stephen Cacho, Isabel Benway, Heather M Tachikawa, Kazuyo Magnesium/Calcium ratios measured on planktonic foraminifera of the LGM |
topic_facet |
LIT Literary studies MARGO MARGO_0000 Multiproxy Approach for the Reconstruction of the Glacial Ocean surface |
description |
As part of the Multi-proxy Approach for the Reconstruction of the Glacial Ocean (MARGO) incentive, published and unpublished temperature reconstructions for the Last Glacial Maximum (LGM) based on planktonic foraminiferal Mg/Ca ratios have been synthesised and made available in an online database. Development and applications of Mg/Ca thermometry are described in order to illustrate the current state of the method. Various attempts to calibrate foraminiferal Mg/Ca ratios with temperature, including culture, trap and core-top approaches have given very consistent results although differences in methodological techniques can produce offsets between laboratories which need to be assessed and accounted for where possible. Dissolution of foraminiferal calcite at the sea-floor generally causes a lowering of Mg/Ca ratios. This effect requires further study in order to account and potentially correct for it if dissolution has occurred. Mg/Ca thermometry has advantages over other paleotemperature proxies including its use to investigate changes in the oxygen isotopic composition of seawater and the ability to reconstruct changes in the thermal structure of the water column by use of multiple species from different depth and or seasonal habitats. Presently available data are somewhat limited to low latitudes where they give fairly consistent values for the temperature difference between Late Holocene and the LGM (2-3.5 °C). Data from higher latitudes are more sparse, and suggest there may be complicating factors when comparing between multi-proxy reconstructions. |
format |
Dataset |
author |
Barker, Stephen Cacho, Isabel Benway, Heather M Tachikawa, Kazuyo |
author_facet |
Barker, Stephen Cacho, Isabel Benway, Heather M Tachikawa, Kazuyo |
author_sort |
Barker, Stephen |
title |
Magnesium/Calcium ratios measured on planktonic foraminifera of the LGM |
title_short |
Magnesium/Calcium ratios measured on planktonic foraminifera of the LGM |
title_full |
Magnesium/Calcium ratios measured on planktonic foraminifera of the LGM |
title_fullStr |
Magnesium/Calcium ratios measured on planktonic foraminifera of the LGM |
title_full_unstemmed |
Magnesium/Calcium ratios measured on planktonic foraminifera of the LGM |
title_sort |
magnesium/calcium ratios measured on planktonic foraminifera of the lgm |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.773256 https://doi.org/10.1594/PANGAEA.773256 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Supplement to: Barker, Stephen; Cacho, Isabel; Benway, Heather M; Tachikawa, Kazuyo (2005): Planktonic foraminiferal Mg/Ca as a proxy for past oceanic temperatures: a methodological overview and data compilation for the Last Glacial Maximum. Quaternary Science Reviews, 24(7-9), 821-834, https://doi.org/10.1016/j.quascirev.2004.07.016 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.773256 https://doi.org/10.1594/PANGAEA.773256 |
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.773256 https://doi.org/10.1016/j.quascirev.2004.07.016 |
_version_ |
1766170270971723776 |