(Table S1) Globigerinoides sacculifer Boron isotope ratios of ODP Hole 165-999A ...
everal hypotheses have been put forward to explain the onset of intensive glaciations on Greenland, Scandinavia, and North America during the Pliocene epoch between 3.6 and 2.7 million years ago (Ma). A decrease in atmospheric CO2 may have played a role during the onset of glaciations, but other tec...
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ftdatacite:10.1594/pangaea.829486 2024-06-09T07:46:22+00:00 (Table S1) Globigerinoides sacculifer Boron isotope ratios of ODP Hole 165-999A ... Bartoli, Gretta Hönisch, Bärbel Zeebe, Richard E 2011 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.829486 https://doi.pangaea.de/10.1594/PANGAEA.829486 en eng PANGAEA https://dx.doi.org/10.1029/2010pa002055 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 Size fraction Isotopic event Method comment Globigerinoides sacculifer, weight Globigerinoides sacculifer, δ11B Globigerinoides sacculifer, δ11B, standard error Drilling/drill rig DSDP/ODP/IODP sample designation Leg165 Joides Resolution Ocean Drilling Program ODP Supplementary Dataset dataset Dataset 2011 ftdatacite https://doi.org/10.1594/pangaea.82948610.1029/2010pa002055 2024-05-13T11:38:56Z everal hypotheses have been put forward to explain the onset of intensive glaciations on Greenland, Scandinavia, and North America during the Pliocene epoch between 3.6 and 2.7 million years ago (Ma). A decrease in atmospheric CO2 may have played a role during the onset of glaciations, but other tectonic and oceanic events occurring at the same time may have played a part as well. Here we present detailed atmospheric CO2 estimates from boron isotopes in planktic foraminifer shells spanning 4.6-2.0 Ma. Maximal Pliocene atmospheric CO2 estimates gradually declined from values around 410 µatm to early Pleistocene values of 300 matm at 2.0 Ma. After the onset of large-scale ice sheets in the Northern Hemisphere, maximal pCO2 estimates were still at 2.5 Ma +90 µatm higher than values characteristic of the early Pleistocene interglacials. By contrast, Pliocene minimal atmospheric CO2 gradually decreased from 310 to 245 µatm at 3.2 Ma, coinciding with the start of transient glaciations on Greenland. Values ... : DEPTH, sediment/rock is given in mbsf. ... Dataset Greenland DataCite Metadata Store (German National Library of Science and Technology) Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Sample code/label DEPTH, sediment/rock AGE Size fraction Isotopic event Method comment Globigerinoides sacculifer, weight Globigerinoides sacculifer, δ11B Globigerinoides sacculifer, δ11B, standard error Drilling/drill rig DSDP/ODP/IODP sample designation Leg165 Joides Resolution Ocean Drilling Program ODP |
spellingShingle |
Sample code/label DEPTH, sediment/rock AGE Size fraction Isotopic event Method comment Globigerinoides sacculifer, weight Globigerinoides sacculifer, δ11B Globigerinoides sacculifer, δ11B, standard error Drilling/drill rig DSDP/ODP/IODP sample designation Leg165 Joides Resolution Ocean Drilling Program ODP Bartoli, Gretta Hönisch, Bärbel Zeebe, Richard E (Table S1) Globigerinoides sacculifer Boron isotope ratios of ODP Hole 165-999A ... |
topic_facet |
Sample code/label DEPTH, sediment/rock AGE Size fraction Isotopic event Method comment Globigerinoides sacculifer, weight Globigerinoides sacculifer, δ11B Globigerinoides sacculifer, δ11B, standard error Drilling/drill rig DSDP/ODP/IODP sample designation Leg165 Joides Resolution Ocean Drilling Program ODP |
description |
everal hypotheses have been put forward to explain the onset of intensive glaciations on Greenland, Scandinavia, and North America during the Pliocene epoch between 3.6 and 2.7 million years ago (Ma). A decrease in atmospheric CO2 may have played a role during the onset of glaciations, but other tectonic and oceanic events occurring at the same time may have played a part as well. Here we present detailed atmospheric CO2 estimates from boron isotopes in planktic foraminifer shells spanning 4.6-2.0 Ma. Maximal Pliocene atmospheric CO2 estimates gradually declined from values around 410 µatm to early Pleistocene values of 300 matm at 2.0 Ma. After the onset of large-scale ice sheets in the Northern Hemisphere, maximal pCO2 estimates were still at 2.5 Ma +90 µatm higher than values characteristic of the early Pleistocene interglacials. By contrast, Pliocene minimal atmospheric CO2 gradually decreased from 310 to 245 µatm at 3.2 Ma, coinciding with the start of transient glaciations on Greenland. Values ... : DEPTH, sediment/rock is given in mbsf. ... |
format |
Dataset |
author |
Bartoli, Gretta Hönisch, Bärbel Zeebe, Richard E |
author_facet |
Bartoli, Gretta Hönisch, Bärbel Zeebe, Richard E |
author_sort |
Bartoli, Gretta |
title |
(Table S1) Globigerinoides sacculifer Boron isotope ratios of ODP Hole 165-999A ... |
title_short |
(Table S1) Globigerinoides sacculifer Boron isotope ratios of ODP Hole 165-999A ... |
title_full |
(Table S1) Globigerinoides sacculifer Boron isotope ratios of ODP Hole 165-999A ... |
title_fullStr |
(Table S1) Globigerinoides sacculifer Boron isotope ratios of ODP Hole 165-999A ... |
title_full_unstemmed |
(Table S1) Globigerinoides sacculifer Boron isotope ratios of ODP Hole 165-999A ... |
title_sort |
(table s1) globigerinoides sacculifer boron isotope ratios of odp hole 165-999a ... |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://dx.doi.org/10.1594/pangaea.829486 https://doi.pangaea.de/10.1594/PANGAEA.829486 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
https://dx.doi.org/10.1029/2010pa002055 |
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.82948610.1029/2010pa002055 |
_version_ |
1801376207238856704 |