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(Table S1) Uranium and Thorium isotopes and U/Th ages of IODP Exp310 cores from offshore Tahiti (2009)

Thomas, Alexander L ; Henderson, Gideon M ; Deschamps, Pierre ; [et al.]

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In: 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, https://doi.org/10.1126/science.1168754

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Publication Date: 2024-01-25

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.

Keywords: 310-M0005D; 310-M0009B; 310-M0009C; 310-M0009D; 310-M0009E; 310-M0019A; 310-M0020A; AGE; Age, standard deviation; Area/locality; Calcite; Calcite, standard deviation; Calculated, see reference(s); Coral; Depth, reconstructed; Description; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Exp310; Hafniasphaera spp.; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS); Sample code/label; TAH-01A-3; TAH-01A-3A; TAH-02A-5A; TAH-02A-5B; TAH-02A-5C; TAH-02A-5E; TAH-03A-4C; Tahiti, offshore Faaa; Tahiti, offshore Maraa; Tahiti, offshore Tiarei; Tahiti Sea Level; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, standard deviation; Thorium-232, standard deviation; Thorium-232/Uranium-238 activity ratio; Thorium-232/Uranium-238 activity ratio, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation

Type: Dataset

Format: text/tab-separated-values, 678 data points

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