Sealevel history recorded in the Pleistocene carbonate sequence in IODP Hole 310-M0005D, off Tahiti

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doi: 10.1111/j.1440-1738.2010.00737.x
Author(s): Iryu, Yasufumi; Takahashi, Yasunari; Fujita, Kazuhiko; Camoin, Gilbert; Cabioch, Guy; Matsuda, Hiroki; Sato, Tokiyuki; Sugihara, Kaoru; Webster, Jody M.; Westphal, Hildegard
Author Affiliation(s): Primary:
Nagoya University, Department of Earth and Planetary Sciences, Nagoya, Japan
Tohoku University, Japan
University of the Ryukyus, Japan
Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement, France
Institut de Recherche pour le Déloppement, France
Kumamoto University, Japan
Akita University, Japan
National Institute for Environmental Studies, Japan
University of Sydney, Australia
Universität Bremen, Germany
Volume Title: Island Arc
Source: Island Arc, 19(4), p.690-706. Publisher: Wiley Blackwell on behalf of Geological Society of Japan, Tsukuba, Japan. ISSN: 1038-4871
Note: In English. 52 refs.; illus., incl. 1 table, sketch map
Summary: Material cored during the Integrated Ocean Drilling Program (IODP) Expedition 310 'Tahiti Sea Level' revealed that the fossil reef systems around Tahiti are composed of two major stratigraphic sequences: (i) a last deglacial sequence; and (ii) an older Pleistocene sequence. The older Pleistocene carbonate sequence is composed of reef deposits associated with volcaniclastic sediments and was preserved in Hole 310-M0005D drilled off Maraa. Within an approximately 70-m-thick older Pleistocene sequence (33.22-101.93 m below seafloor; 92.85-161.56 m below present sealevel) in this hole, 11 depositional units are defined by lithological changes, sedimentological features, and paleontological characteristics and are numbered sequentially from the top of the hole downward (Subunits P1-P11). Paleowater depths inferred from nongeniculate coralline algae, combined with those determined by using corals and larger foraminifers, suggest two major sealevel rises during the deposition of the older Pleistocene sequence. Of these, the second sealevel rise is associated with an intervening sealevel drop. It is likely that the second sealevel rise corresponds to that during Termination II (TII, the penultimate deglaciation, from Marine Isotope Stages 6 to 5e). Therefore, the intervening sealevel drop can be correlated with that known as the 'sealevel reversal' during TII. Because there are limited data on the Pleistocene reef systems in the tropical South Pacific Ocean, this study provides important information about Pleistocene sealevel history, the evolution of coral reef ecosystems, and the responses of coral reefs to Quaternary climate changes. Abstract Copyright (2010), Blackwell Publishing Asia Pty Ltd.
Year of Publication: 2010
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Algae; Anthozoa; Carbonate sediments; Cenozoic; Cnidaria; Corallinaceae; Deglaciation; Deposition; Depth; East Pacific; Expedition 310; Foraminifera; French Polynesia; Fungi; IODP Site M0005; Indicators; Integrated Ocean Drilling Program; Invertebrata; Maraa Tahiti; Marine environment; Microfossils; Oceania; Pacific Ocean; Plantae; Pleistocene; Polynesia; Protista; Quaternary; Reef environment; Rhodophyta; Sediments; Shelf environment; Society Islands; South Pacific; Southeast Pacific; Tahiti; Tahiti Sea Level Expedition
Coordinates: S174600 S174600 W1493300 W1493300
Record ID: 2011038091
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom