Thomas, Alexander L. et al. (2012): Assessing subsidence rates and paleo water-depths for Tahiti reefs using U-Th chronology of altered corals

Leg/Site/Hole: Related Expeditions:

IODP 310
IODP 310 M0005

Identifier: ID:

2012-045491

Type:

georefid

ID:

10.1016/j.margeo.2011.12.006

Type:

doi

Creator: Name:

Thomas, Alexander L.

Affiliation:

Oxford University, Department of Earth Sciences, Oxford, United Kingdom

Role:

author

Name:

Fujita, Kazuhiko

Affiliation:

University of the Ryukyus, Japan

Role:

author

Name:

Iryu, Yasufumi

Affiliation:

Tohoku University, Japan

Role:

author

Name:

Bard, Edouard

Affiliation:

Aix-Marseille Unmiversite, France

Role:

author

Name:

Cabioch, Guy

Affiliation:

Institut de Recherche pour le Developpement, New Caledonia

Role:

author

Name:

Camoin, Gilbert

Affiliation:

University of Arizona, United States

Role:

author

Name:

Cole, Julia E.

Affiliation:

University of Bremen, Germany

Role:

author

Name:

Deschamps, Pierre

Affiliation:

Kumamoto University, Japan

Role:

author

Name:

Durand, Nicolas

Affiliation:

Shizuoka University, Japan

Role:

author

Name:

Hamelin, Bruno

Affiliation:

University of South Florida, United States

Role:

author

Name:

Heindel, Katrin

Affiliation:

Japan Agency for Marine-Earth Science and Technology, Japan

Role:

author

Name:

Henderson, Gideon M.

Affiliation:

Akita University, Japan

Role:

author

Name:

Mason, Andew J.

Affiliation:

Fukuoka University, Japan

Role:

author

Name:

Matsuda, Hiroki

Affiliation:

University of Edinburgh, United Kingdom

Role:

author

Name:

Menabreaz, Lucie

Affiliation:

James Cook University of North Queensland, Australia

Role:

author

Name:

Omori, Akitoshi

Affiliation:

Role:

author

Name:

Quinn, Terry

Affiliation:

Role:

author

Name:

Sakai, Saburo

Affiliation:

Role:

author

Name:

Sato, Tokiyuki

Affiliation:

Role:

author

Name:

Sugihara, Kaoru

Affiliation:

Role:

author

Name:

Takahashi, Yasunari

Affiliation:

Role:

author

Name:

Thouveny, Nicolas

Affiliation:

Role:

author

Name:

Tudhope, Alexander W.

Affiliation:

Role:

author

Name:

Webster, Jody

Affiliation:

Role:

author

Name:

Westphal, Hildegard

Affiliation:

Role:

author

Name:

Yokoyama, Yusuke

Affiliation:

Role:

author

Identification: Title:

Assessing subsidence rates and paleo water-depths for Tahiti reefs using U-Th chronology of altered corals

Year:

2012

Source:

Marine Geology

Publisher:

Elsevier, Amsterdam, Netherlands

Volume:

295-298

Issue:

Pages:

86-94

Abstract:

We present uranium-thorium chronology for a 102m core through a Pleistocene reef at Tahiti (French Polynesia) sampled during IODP Expedition 310 "Tahiti Sea Level". We employ total and partial dissolution procedures on the older coral samples to investigate the diagenetic overprint of the uranium-thorium system. Although alteration of the U-Th system cannot be robustly corrected, diagenetic trends in the U-Th data, combined with sea level and subsidence constraints for the growth of the corals enables the age of critical samples to be constrained to marine isotope stage 9. We use the ages of the corals, together with delta (super 18) O based sea-level histories, to provide maximum constraints on possible paleo water-depths. These depth constraints are then compared to independent depth estimates based on algal and foraminiferal assemblages, microbioerosion patterns, and sedimentary facies, confirming the accuracy of these paleo water-depth estimates. We also use the fact that corals could not have grown above sea level to place a maximum constraint on the subsidence rate of Tahiti to be 0.39mka (super -1) , with the most likely rate being close to the existing minimum estimate of 0.25mka (super -1) . Abstract Copyright (2012) Elsevier, B.V.

Language:

English

Genre:

Serial

Rights:

URL:

Coverage:Geographic coordinates:

	North:-17.4600
West:-149.3300		East: -149.3300
	South:-17.4600

Keywords:

Quaternary geology; Geochronology; absolute age; carbonate rocks; Cenozoic; cores; dates; East Pacific; Expedition 310; French Polynesia; Integrated Ocean Drilling Program; IODP Site M0005; Oceania; Pacific Ocean; paleobathymetry; Pleistocene; Polynesia; Quaternary; rates; reconstruction; reefs; sedimentary rocks; Society Islands; South Pacific; Southeast Pacific; subsidence; Tahiti; Tahiti Sea Level Expedition; Th/U;

SEDIS - Publications

Thomas, Alexander L. et al. (2012): Assessing subsidence rates and paleo water-depths for Tahiti reefs using U-Th chronology of altered corals