Deglacial meltwater pulse 1B and Younger Dryas sea levels revisited with boreholes at Tahiti

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doi: 10.1126/science.1180557
Author(s): Bard, Edouard; Hamelin, Bruno; Delanghe-Sabatier, Doriane
Author Affiliation(s): Primary:
University Aix-Marseille, Institut de Recherche pour le Développement, Aix-en-Provence, France
Volume Title: Science
Source: Science, 327(5970), p.1235-1237. Publisher: American Association for the Advancement of Science, Washington, DC, United States. ISSN: 0036-8075 CODEN: SCIEAS
Note: In English. 37 refs.; illus.
Summary: Reconstructing sea-level changes during the last deglaciation provides a way of understanding the ice dynamics that can perturb large continental ice sheets. The resolution of the few sea-level records covering the critical time interval between 14,000 and 9,000 calendar years before the present is still insufficient to draw conclusions about sea-level changes associated with the Younger Dryas cold event and the meltwater pulse 1B (MWP-1B). We used the uranium-thorium method to date shallow-living corals from three new cores drilled onshore in the Tahiti barrier reef. No significant discontinuity can be detected in the sea-level rise during the MWP-1B period. The new Tahiti sea-level record shows that the sea-level rise slowed down during the Younger Dryas before accelerating again during the Holocene.
Year of Publication: 2010
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 03 Geochronology; 24 Surficial Geology, Quaternary Geology; Absolute age; Anthozoa; Arctic region; Boreholes; Cenozoic; Cnidaria; Cores; Correlation; Dates; Deglaciation; Expedition 310; French Polynesia; GRIP; Greenland; Ice cores; Integrated Ocean Drilling Program; Invertebrata; Isotope ratios; Isotopes; Melanesia; Meltwater; O-18/O-16; Oceania; Oxygen; Pacific Ocean; Paleo-oceanography; Paleoclimatology; Pleistocene; Polynesia; Quaternary; Reef environment; Sea-level changes; Society Islands; South Pacific; Stable isotopes; Tahiti; Th/U; Upper Pleistocene; Upper Weichselian; Vanuatu; Weichselian; Younger Dryas
Coordinates: S180000 S170000 W1490000 W1500000
Record ID: 2010041930
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.