(Table 1) 87Sr/86Sr ratios and ages of DSDP Site 144A samples
Glassy Turonian foraminifera preserved in clay-rich sediments from the western tropical Atlantic yield the warmest equivalent d18O sea-surface temperatures (SSTs) yet reported for the entire Cretaceous-Cenozoic. We estimate Turonian SSTs that were at least as warm as (conservative mean ~30 °C) to si...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.713542 2023-05-15T17:35:46+02:00 (Table 1) 87Sr/86Sr ratios and ages of DSDP Site 144A samples Wilson, Paul A Norris, Richard D Cooper, Matthew J LATITUDE: 9.453800 * LONGITUDE: -54.342000 * DATE/TIME START: 1970-11-23T00:00:00 * DATE/TIME END: 1970-11-23T00:00:00 * MINIMUM ELEVATION: -2957.0 m * MAXIMUM ELEVATION: -2957.0 m 2002-02-26 text/tab-separated-values, 15 data points https://doi.pangaea.de/10.1594/PANGAEA.713542 https://doi.org/10.1594/PANGAEA.713542 en eng PANGAEA 87Sr/86Sr ratios and ages of DSDP Site 144A (URI: ftp://rock.geosociety.org/pub/reposit/2002/2002064.pdf) https://doi.pangaea.de/10.1594/PANGAEA.713542 https://doi.org/10.1594/PANGAEA.713542 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Wilson, Paul A; Norris, Richard D; Cooper, Matthew J (2002): Warming the fuel for the fire: Evidence for the thermal dissociation of methane hydrate during the Paleocene-Eocene thermal maximum. Geology, 30(7), 1067-1070, https://doi.org/10.1130/0091-7613(2002)030%3C0607:TTCGHU%3E2.0.CO;2 14-144A AGE maximum/old minimum/young Calculated Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg14 Mass spectrometer VG Sector 54 North Atlantic/CONT RISE Sample code/label Strontium-87/Strontium-86 ratio error Dataset 2002 ftpangaea https://doi.org/10.1594/PANGAEA.713542 https://doi.org/10.1130/0091-7613(2002)030%3C0607:TTCGHU%3E2.0.CO;2 2023-01-20T08:47:19Z Glassy Turonian foraminifera preserved in clay-rich sediments from the western tropical Atlantic yield the warmest equivalent d18O sea-surface temperatures (SSTs) yet reported for the entire Cretaceous-Cenozoic. We estimate Turonian SSTs that were at least as warm as (conservative mean ~30 °C) to significantly warmer (warm mean ~33 °C) than those in the region today. However, if independent evidence for high middle Cretaceous pCO2 is reliable and resulted in greater isotopic fractionation between seawater and calcite because of lower sea-surface pH, our conservative and warm SST estimates would be even higher (32 and 36°C, respectively). Our new tropical SSTs help reconcile geologic data with the predictions of general circulation models that incorporate high Cretaceous pCO2 and lend support to the hypothesis of a Cretaceous greenhouse. Our data also strengthen the case for a Turonian age for the Cretaceous thermal maximum and highlight a 20-40 m.y. mismatch between peak Cretaceous-Cenozoic global warmth and peak inferred tectonic CO2 production. We infer that this mismatch is either an artifact of a hidden Turonian pulse in global ocean-crust cycling or real evidence of the influence of some other factor on atmospheric CO2 and/or SSTs. A hidden pulse in crust cycling would explain the timing of peak Cretaceous-Cenozoic sea level (also Turonian), but other factors are needed to explain high-frequency (~10-100 k.y.) instability in middle Cretaceous SSTs reported elsewhere. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-54.342000,-54.342000,9.453800,9.453800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
14-144A AGE maximum/old minimum/young Calculated Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg14 Mass spectrometer VG Sector 54 North Atlantic/CONT RISE Sample code/label Strontium-87/Strontium-86 ratio error |
spellingShingle |
14-144A AGE maximum/old minimum/young Calculated Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg14 Mass spectrometer VG Sector 54 North Atlantic/CONT RISE Sample code/label Strontium-87/Strontium-86 ratio error Wilson, Paul A Norris, Richard D Cooper, Matthew J (Table 1) 87Sr/86Sr ratios and ages of DSDP Site 144A samples |
topic_facet |
14-144A AGE maximum/old minimum/young Calculated Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg14 Mass spectrometer VG Sector 54 North Atlantic/CONT RISE Sample code/label Strontium-87/Strontium-86 ratio error |
description |
Glassy Turonian foraminifera preserved in clay-rich sediments from the western tropical Atlantic yield the warmest equivalent d18O sea-surface temperatures (SSTs) yet reported for the entire Cretaceous-Cenozoic. We estimate Turonian SSTs that were at least as warm as (conservative mean ~30 °C) to significantly warmer (warm mean ~33 °C) than those in the region today. However, if independent evidence for high middle Cretaceous pCO2 is reliable and resulted in greater isotopic fractionation between seawater and calcite because of lower sea-surface pH, our conservative and warm SST estimates would be even higher (32 and 36°C, respectively). Our new tropical SSTs help reconcile geologic data with the predictions of general circulation models that incorporate high Cretaceous pCO2 and lend support to the hypothesis of a Cretaceous greenhouse. Our data also strengthen the case for a Turonian age for the Cretaceous thermal maximum and highlight a 20-40 m.y. mismatch between peak Cretaceous-Cenozoic global warmth and peak inferred tectonic CO2 production. We infer that this mismatch is either an artifact of a hidden Turonian pulse in global ocean-crust cycling or real evidence of the influence of some other factor on atmospheric CO2 and/or SSTs. A hidden pulse in crust cycling would explain the timing of peak Cretaceous-Cenozoic sea level (also Turonian), but other factors are needed to explain high-frequency (~10-100 k.y.) instability in middle Cretaceous SSTs reported elsewhere. |
format |
Dataset |
author |
Wilson, Paul A Norris, Richard D Cooper, Matthew J |
author_facet |
Wilson, Paul A Norris, Richard D Cooper, Matthew J |
author_sort |
Wilson, Paul A |
title |
(Table 1) 87Sr/86Sr ratios and ages of DSDP Site 144A samples |
title_short |
(Table 1) 87Sr/86Sr ratios and ages of DSDP Site 144A samples |
title_full |
(Table 1) 87Sr/86Sr ratios and ages of DSDP Site 144A samples |
title_fullStr |
(Table 1) 87Sr/86Sr ratios and ages of DSDP Site 144A samples |
title_full_unstemmed |
(Table 1) 87Sr/86Sr ratios and ages of DSDP Site 144A samples |
title_sort |
(table 1) 87sr/86sr ratios and ages of dsdp site 144a samples |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.713542 https://doi.org/10.1594/PANGAEA.713542 |
op_coverage |
LATITUDE: 9.453800 * LONGITUDE: -54.342000 * DATE/TIME START: 1970-11-23T00:00:00 * DATE/TIME END: 1970-11-23T00:00:00 * MINIMUM ELEVATION: -2957.0 m * MAXIMUM ELEVATION: -2957.0 m |
long_lat |
ENVELOPE(-54.342000,-54.342000,9.453800,9.453800) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Wilson, Paul A; Norris, Richard D; Cooper, Matthew J (2002): Warming the fuel for the fire: Evidence for the thermal dissociation of methane hydrate during the Paleocene-Eocene thermal maximum. Geology, 30(7), 1067-1070, https://doi.org/10.1130/0091-7613(2002)030%3C0607:TTCGHU%3E2.0.CO;2 |
op_relation |
87Sr/86Sr ratios and ages of DSDP Site 144A (URI: ftp://rock.geosociety.org/pub/reposit/2002/2002064.pdf) https://doi.pangaea.de/10.1594/PANGAEA.713542 https://doi.org/10.1594/PANGAEA.713542 |
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.713542 https://doi.org/10.1130/0091-7613(2002)030%3C0607:TTCGHU%3E2.0.CO;2 |
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