LA-ICP-MS Trace Element Analysis of Planktonic Foraminifera and Application to Marine Isotope Stage 31 in the Southwest Pacific Ocean
Trace element/Ca ratios were measured by LA-ICP-MS in Gs. ruber and N. incompta from a wide range of core top and plankton tow samples in the Southwest Pacific Ocean, with particular focus on linking measured Mg/Ca ratios to observed (near-) surface ocean temperatures. Mean Mg/Ca ratios measured in...
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ftvictoriauwfig:oai:figshare.com:article/17011361 2023-05-15T18:01:15+02:00 LA-ICP-MS Trace Element Analysis of Planktonic Foraminifera and Application to Marine Isotope Stage 31 in the Southwest Pacific Ocean Bolton, Annette 2011-01-01T00:00:00Z https://doi.org/10.26686/wgtn.17011361 https://figshare.com/articles/thesis/LA-ICP-MS_Trace_Element_Analysis_of_Planktonic_Foraminifera_and_Application_to_Marine_Isotope_Stage_31_in_the_Southwest_Pacific_Ocean/17011361 unknown doi:10.26686/wgtn.17011361 https://figshare.com/articles/thesis/LA-ICP-MS_Trace_Element_Analysis_of_Planktonic_Foraminifera_and_Application_to_Marine_Isotope_Stage_31_in_the_Southwest_Pacific_Ocean/17011361 Author Retains Copyright Earth Sciences not elsewhere classified Paleoceanography Palaeoceanography Climate change Ocean temperature School: School of Geography Environment and Earth Sciences 049999 Earth Sciences not elsewhere classified Marsden: 260199 Geology Marsden: 260399 Geochemistry Marsden: 260499 Oceanography Degree Discipline: Geology Degree Level: Doctoral Degree Name: Doctor of Philosophy Text Thesis 2011 ftvictoriauwfig https://doi.org/10.26686/wgtn.17011361 2023-03-16T00:13:44Z Trace element/Ca ratios were measured by LA-ICP-MS in Gs. ruber and N. incompta from a wide range of core top and plankton tow samples in the Southwest Pacific Ocean, with particular focus on linking measured Mg/Ca ratios to observed (near-) surface ocean temperatures. Mean Mg/Ca ratios measured in the ultimate chamber F of Gs. ruber are significantly lower compared to chambers F-2 and F-1, which show no statistical difference. These observations led to the development of three new Mg/Ca – ocean temperature calibrations that can be used to reconstruct SST from LA-ICP-MS trace element analysis of Gs. ruber over a temperature range of 14.7-28.8°C. In contrast to the LA-ICP-MS study of Gs. ruber, the planktonic species N. incompta shows no systematic difference in Mg/Ca between the final four visible chambers at one core top site, nor between the F-3 and F chambers at any sites. In addition, there was no correlation between Mg/Ca ratios and ocean temperature in either reticulate or crystalline forms. This may reflect migration of this species within the water column that is not uni-directional, that this species does not dwell at the same depths at each core top site, or point towards further unidentified controls on Mg incorporation into N. incompta that require further study. The chamber specific calibrations developed for Gs. ruber in this study, and a calibration developed using the same techniques for G. bulloides [Marr et al., 2011] were applied down core to Mg/Ca ratios measured from ODP Site 1123. The SST derived from Mg/Ca ratios reveal that during the MIS-31 interglacial, SSTs were approximately 4-5°C warmer than today and 8-9°C warmer than those from MIS-29 and 30. A comparison of SSTs measured from Gs. ruber and G. bulloides, suggests that they are responding to local insolation changes. G. bulloides records colder temperatures than Gs. ruber, which reflects differences in their relative depth in the water column. Paired Mg/Ca and δ 18O data reveal significant changes in ice volume over the sampling ... Thesis Planktonic foraminifera Open Access Victoria University of Wellington / Te Herenga Waka Pacific Marsden ENVELOPE(66.067,66.067,-67.867,-67.867) Marr ENVELOPE(52.117,52.117,-66.400,-66.400) |
institution |
Open Polar |
collection |
Open Access Victoria University of Wellington / Te Herenga Waka |
op_collection_id |
ftvictoriauwfig |
language |
unknown |
topic |
Earth Sciences not elsewhere classified Paleoceanography Palaeoceanography Climate change Ocean temperature School: School of Geography Environment and Earth Sciences 049999 Earth Sciences not elsewhere classified Marsden: 260199 Geology Marsden: 260399 Geochemistry Marsden: 260499 Oceanography Degree Discipline: Geology Degree Level: Doctoral Degree Name: Doctor of Philosophy |
spellingShingle |
Earth Sciences not elsewhere classified Paleoceanography Palaeoceanography Climate change Ocean temperature School: School of Geography Environment and Earth Sciences 049999 Earth Sciences not elsewhere classified Marsden: 260199 Geology Marsden: 260399 Geochemistry Marsden: 260499 Oceanography Degree Discipline: Geology Degree Level: Doctoral Degree Name: Doctor of Philosophy Bolton, Annette LA-ICP-MS Trace Element Analysis of Planktonic Foraminifera and Application to Marine Isotope Stage 31 in the Southwest Pacific Ocean |
topic_facet |
Earth Sciences not elsewhere classified Paleoceanography Palaeoceanography Climate change Ocean temperature School: School of Geography Environment and Earth Sciences 049999 Earth Sciences not elsewhere classified Marsden: 260199 Geology Marsden: 260399 Geochemistry Marsden: 260499 Oceanography Degree Discipline: Geology Degree Level: Doctoral Degree Name: Doctor of Philosophy |
description |
Trace element/Ca ratios were measured by LA-ICP-MS in Gs. ruber and N. incompta from a wide range of core top and plankton tow samples in the Southwest Pacific Ocean, with particular focus on linking measured Mg/Ca ratios to observed (near-) surface ocean temperatures. Mean Mg/Ca ratios measured in the ultimate chamber F of Gs. ruber are significantly lower compared to chambers F-2 and F-1, which show no statistical difference. These observations led to the development of three new Mg/Ca – ocean temperature calibrations that can be used to reconstruct SST from LA-ICP-MS trace element analysis of Gs. ruber over a temperature range of 14.7-28.8°C. In contrast to the LA-ICP-MS study of Gs. ruber, the planktonic species N. incompta shows no systematic difference in Mg/Ca between the final four visible chambers at one core top site, nor between the F-3 and F chambers at any sites. In addition, there was no correlation between Mg/Ca ratios and ocean temperature in either reticulate or crystalline forms. This may reflect migration of this species within the water column that is not uni-directional, that this species does not dwell at the same depths at each core top site, or point towards further unidentified controls on Mg incorporation into N. incompta that require further study. The chamber specific calibrations developed for Gs. ruber in this study, and a calibration developed using the same techniques for G. bulloides [Marr et al., 2011] were applied down core to Mg/Ca ratios measured from ODP Site 1123. The SST derived from Mg/Ca ratios reveal that during the MIS-31 interglacial, SSTs were approximately 4-5°C warmer than today and 8-9°C warmer than those from MIS-29 and 30. A comparison of SSTs measured from Gs. ruber and G. bulloides, suggests that they are responding to local insolation changes. G. bulloides records colder temperatures than Gs. ruber, which reflects differences in their relative depth in the water column. Paired Mg/Ca and δ 18O data reveal significant changes in ice volume over the sampling ... |
format |
Thesis |
author |
Bolton, Annette |
author_facet |
Bolton, Annette |
author_sort |
Bolton, Annette |
title |
LA-ICP-MS Trace Element Analysis of Planktonic Foraminifera and Application to Marine Isotope Stage 31 in the Southwest Pacific Ocean |
title_short |
LA-ICP-MS Trace Element Analysis of Planktonic Foraminifera and Application to Marine Isotope Stage 31 in the Southwest Pacific Ocean |
title_full |
LA-ICP-MS Trace Element Analysis of Planktonic Foraminifera and Application to Marine Isotope Stage 31 in the Southwest Pacific Ocean |
title_fullStr |
LA-ICP-MS Trace Element Analysis of Planktonic Foraminifera and Application to Marine Isotope Stage 31 in the Southwest Pacific Ocean |
title_full_unstemmed |
LA-ICP-MS Trace Element Analysis of Planktonic Foraminifera and Application to Marine Isotope Stage 31 in the Southwest Pacific Ocean |
title_sort |
la-icp-ms trace element analysis of planktonic foraminifera and application to marine isotope stage 31 in the southwest pacific ocean |
publishDate |
2011 |
url |
https://doi.org/10.26686/wgtn.17011361 https://figshare.com/articles/thesis/LA-ICP-MS_Trace_Element_Analysis_of_Planktonic_Foraminifera_and_Application_to_Marine_Isotope_Stage_31_in_the_Southwest_Pacific_Ocean/17011361 |
long_lat |
ENVELOPE(66.067,66.067,-67.867,-67.867) ENVELOPE(52.117,52.117,-66.400,-66.400) |
geographic |
Pacific Marsden Marr |
geographic_facet |
Pacific Marsden Marr |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
doi:10.26686/wgtn.17011361 https://figshare.com/articles/thesis/LA-ICP-MS_Trace_Element_Analysis_of_Planktonic_Foraminifera_and_Application_to_Marine_Isotope_Stage_31_in_the_Southwest_Pacific_Ocean/17011361 |
op_rights |
Author Retains Copyright |
op_doi |
https://doi.org/10.26686/wgtn.17011361 |
_version_ |
1766170628107272192 |