(Table S1) Uranium and Thorium isotopes and U/Th ages of IODP Exp310 cores from offshore Tahiti
Citation
Thomas A L, Henderson G M, Deschamps P, Yokoyama Y, Mason A J, Bard É, Hamelin B, Durand N, Camoin G (2008). (Table S1) Uranium and Thorium isotopes and U/Th ages of IODP Exp310 cores from offshore Tahiti. PANGAEA - Publishing Network for Geoscientific and Environmental Data. Occurrence dataset https://doi.org/10.1594/pangaea.756921 accessed via GBIF.org on 2018-10-21.Description
The timing of sea-level change provides important constraints on the mechanisms driving Earth’s climate between glacial and interglacial states. Fossil corals constrain the timing of past sea level by their suitability for dating and their growth position close to sea level. The coral-derived age for the last deglaciation is consistent with climate change forced by Northern Hemisphere summer insolation (NHI), but the timing of the penultimate deglaciation is more controversial. We found, by means of uranium/thorium dating of fossil corals, that sea level during the penultimate deglaciation had risen to ~85 meters below the present sea level by 137,000 years ago, and that it fluctuated on a millennial time scale during deglaciation. This indicates that the penultimate deglaciation occurred earlier with respect to NHI than the last deglacial, beginning when NHI was at a minimum.Taxonomic Coverages
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Bibliographic Citations
Contacts
Alexander L Thomasoriginator
Gideon M Henderson
originator
Pierre Deschamps
originator
Yusuke Yokoyama
originator
Andrew J Mason
originator
Édouard Bard
originator
Bruno Hamelin
originator
Nicolas Durand
originator
Gilbert Camoin
originator
metadata author
PANGAEA - Data Publisher for Earth & Environmental Science
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administrative point of contact
PANGAEA - Data Publisher for Earth & Environmental Science
email: info@pangaea.de
homepage: http://www.pangaea.de