noaa-coral-22643 Seychelles Fossil Coral Data from the Last Interglacial Dutton, A.L.; Webster, J.M.; Zwartz, D.; Lambeck, K.; Wohlfarth, B. Seychelles Fossil Coral Data from the Last Interglacial 2017-09-07 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22643 Investigator A.L. Dutton Investigator J.M. Webster Investigator D. Zwartz Investigator K. Lambeck Investigator B. Wohlfarth earth science paleoclimate corals and sclerosponges notes,null,null,null,null,corals and sclerosponges,null,null,C,taxonomic identification; coral genus species earth science paleoclimate corals and sclerosponges age,null,null,calendar kiloyear before present,null,corals and sclerosponges,null,null,N,U-Th geochronology earth science paleoclimate corals and sclerosponges collection elevation,null,null,meter,null,corals and sclerosponges,raw,null,N,elevation measured with respect to mean low water springs earth science paleoclimate corals and sclerosponges age,null,two standard deviations,calendar kiloyear before present,null,corals and sclerosponges,null,null,N,U-Th geochronology earth science paleoclimate corals and sclerosponges sample identification,null,null,null,null,corals and sclerosponges,null,null,C,lab sample identification; asterisks represent previously published ages that have been recalculated here using different decay constants for 230Th and 234U earth science paleoclimate corals and sclerosponges age,null,null,calendar kiloyear before present,null,corals and sclerosponges,averaged,null,N,U-Th geochronology; average ages for a coral are inverse variance-weighted means of data passing the screening criteria earth science paleoclimate corals and sclerosponges notes,null,null,null,null,corals and sclerosponges,null,null,C,outcrop number earth science paleoclimate corals and sclerosponges calcite,null,null,weight percent,null,corals and sclerosponges,raw,x-ray diffraction,N,null earth science paleoclimate corals and sclerosponges notes,null,null,null,null,corals and sclerosponges,null,null,C,growth form of coral earth science paleoclimate corals and sclerosponges International Geo Sample Number,null,null,null,null,corals and sclerosponges,null,null,C,registered at SESAR earth science paleoclimate corals and sclerosponges age,null,two standard deviations,calendar kiloyear before present,null,corals and sclerosponges,averaged,null,N,U-Th geochronology; average ages for a coral are inverse variance-weighted means of data passing the screening criteria earth science paleoclimate corals and sclerosponges physical properties earth science paleoclimate corals and sclerosponges chemistry earth science paleoclimate corals and sclerosponges age control geoscientificInformation Sea Level Reconstruction 129000 cal yr BP 123000 cal yr BP Complete -4.38 -4.28 55.73 55.84 Ocean Indian Ocean Seychelles La Digue and Curieuse Islands>LATITUDE >LONGITUDE None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Dutton, Andrea, Jody M. Webster, Dan Zwartz, Kurt Lambeck, and Barbara Wohlfarth 2015 Quaternary Science Reviews 107 182-196 10.1016/j.quascirev.2014.10.025 http://www.sciencedirect.com/science/article/pii/S0277379114004120

In the search for a record of eustatic sea level change on glacial–interglacial timescales, the Seychelles ranks as one of the best places on the planet to study. Owing to its location with respect to the former margins of Northern Hemisphere ice sheets that wax and wane on orbital cycles, the local—or relative—sea level history is predicted to lie within a few meters of the globally averaged eustatic signal during the Last Interglacial period. We have surveyed and dated Last Interglacial fossil corals to ascertain peak sea level and hence infer maximum retreat of polar ice sheets during this time interval. We observe a pattern of gradually rising sea level in the Seychelles between ~129 and 125 thousand years ago (ka), with peak eustatic sea level attained after 125 ka at 7.6 ± 1.7 m higher than present. After accounting for thermal expansion and loss of mountain glaciers, this sea-level budget would require ~5–8 m of polar ice sheet contribution, relative to today's volume, of which only ~2 m came from the Greenland ice sheet. This result clearly identifies the Antarctic ice sheet as a significant source of melt water, most likely derived from one of the unstable, marine-based sectors in the West and/or East Antarctic ice sheet. Furthermore, the establishment of a +5.9 ± 1.7 m eustatic sea level position by 128.6 ± 0.8 ka would require that partial AIS collapse was coincident with the onset of the sea level highstand. STUDY NOTES: Samples collected ~3.5 - 8 meters above mean low water. Site elevations have a measurement precision of 0.2 m. Provided Keywords: sea level, U-Th, MIS 5e, coral, Seychelles

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/dutton2015/dutton2015-seychelles.txt NOAA Template File; Fossil Coral Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11