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

DOI

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.

Features indicating the coral is in growth position are: co, the orientation of the coral; cap, the positioning of an algal crust on the upper surface of the coral; gp, the orientation of partially filled geopetals within the coral; and cf, whether the coral forms part of a continuous framework.

Supplement to: Thomas, Alexander L; Henderson, Gideon M; Deschamps, Pierre; Yokoyama, Yusuke; Mason, Andrew J; Bard, Edouard; Hamelin, Bruno; Durand, Nicolas; Camoin, Gilbert (2009): Penultimate deglacial sea-level timing from Uranium/Thorium dating of Tahitian corals. Science, 324(5931), 1186-1189

Identifier
DOI https://doi.org/10.1594/PANGAEA.756921
Related Identifier https://doi.org/10.1126/science.1168754
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.756921
Provenance
Creator Thomas, Alexander L ORCID logo; Henderson, Gideon M ORCID logo; Deschamps, Pierre ORCID logo; Yokoyama, Yusuke ORCID logo; Mason, Andrew J; Bard, Edouard ORCID logo; Hamelin, Bruno; Durand, Nicolas; Camoin, Gilbert ORCID logo
Publisher PANGAEA
Publication Year 2009
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 678 data points
Discipline Earth System Research
Spatial Coverage (-149.599W, -17.767S, -149.403E, -17.489N); Tahiti, offshore Maraa; Tahiti, offshore Tiarei; Tahiti, offshore Faaa
Temporal Coverage Begin 2005-10-10T22:55:00Z
Temporal Coverage End 2005-11-09T05:27:00Z