(Table S1) Uranium and Thorium isotopes and U/Th ages of IODP Exp310 cores from offshore Tahiti

Alexander L Thomas; Gideon M Henderson; Pierre Deschamps; Yusuke Yokoyama; Andrew J Mason; Edouard Bard; Bruno Hamelin; Nicolas Durand; Gilbert Camoin

doi:10.1594/pangaea.756921

(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 E, Hamelin B, Durand N, Camoin G (2009). (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 2023-06-07.

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

Protozoa
rank: kingdom

Geographic Coverages

Event: 310-M0005D, Tahiti, offshore Maraa ; Event: 310-M0009B, Tahiti, offshore Tiarei ; Event: 310-M0009C, Tahiti, offshore Tiarei ; Event: 310-M0009D, Tahiti, offshore Tiarei ; Event: 310-M0009E, Tahiti, offshore Tiarei ; Event: 310-M0019A, Tahiti, offshore Faaa ; Event: 310-M0020A, Tahiti, offshore Faaa ;

Bibliographic Citations

Contacts

Alexander L Thomas
originator

Gideon M Henderson
originator

Pierre Deschamps
originator

Yusuke Yokoyama
originator

Andrew J Mason
originator

Edouard Bard
originator

Bruno Hamelin
originator

Nicolas Durand
originator

Gilbert Camoin
originator

metadata author
PANGAEA - Data Publisher for Earth & Environmental Science
email: info@pangaea.de
homepage: https://www.pangaea.de

administrative point of contact
PANGAEA - Data Publisher for Earth & Environmental Science
email: info@pangaea.de
homepage: http://www.pangaea.de