Hathorne, Ed C. et al. (2011): Laser ablation ICP-MS screening of corals for diagenetically affected areas applied to Tahiti corals from the last deglaciation
Leg/Site/Hole:
Related Expeditions:
IODP 310
Identifier:
ID:
2011-058748
Type:
georefid
ID:
10.1016/j.gca.2010.12.011
Type:
doi
Creator:
Name:
Hathorne, Ed C.
Affiliation:
University of Bremen, Centre for Marine Environmental Sciences, Bremen, Germany
Role:
author
Name:
Felis, Thomas
Affiliation:
Open University, United Kingdom
Role:
author
Name:
James, Rachael H.
Affiliation:
Oxford University, United Kingdom
Role:
author
Name:
Thomas, Alex
Affiliation:
Role:
author
Identification:
Title:
Laser ablation ICP-MS screening of corals for diagenetically affected areas applied to Tahiti corals from the last deglaciation
Year:
2011
Source:
Geochimica et Cosmochimica Acta
Publisher:
Elsevier, New York, NY, International
Volume:
75
Issue:
6
Pages:
1490-1506
Abstract:
Fossil corals are unique archives of past seasonal climate variability, providing vital information about seasonal climate phenomena such as ENSO and monsoons. However, submarine diagenetic processes can potentially obscure the original climate signals and lead to false interpretations. Here we demonstrate the potential of laser ablation ICP-MS to rapidly detect secondary aragonite precipitates in fossil Porites colonies recovered by Integrated Ocean Drilling Program (IODP) Expedition 310 from submerged deglacial reefs off Tahiti. High resolution (100mu m) measurements of coralline B/Ca, Mg/Ca, S/Ca, and U/Ca ratios are used to distinguish areas of pristine skeleton from those afflicted with secondary aragonite. Measurements of coralline Sr/Ca, U/Ca and oxygen isotope ratios, from areas identified as pristine, reveal that the seasonal range of sea surface temperature in the tropical south Pacific during the last deglaciation (14.7 and 11 ka) was similar to that of today. Abstract Copyright (2011) Elsevier, B.V.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:-17.2900 West:-149.3600 East:
-149.2400 South:-17.4600
Keywords: Isotope geochemistry; Quaternary geology; actinides; Anthozoa; aragonite; biochemistry; carbonate rocks; carbonates; Cenozoic; chemical composition; chemical ratios; Cnidaria; deglaciation; diagenesis; East Pacific; Expedition 310; French Polynesia; geochemistry; ICP mass spectra; Integrated Ocean Drilling Program; Invertebrata; isotope ratios; isotopes; laser ablation; laser methods; last glacial maximum; limestone; mass spectra; metals; microbialite; mineral composition; O-18/O-16; Oceania; oxygen; Pacific Ocean; paleoenvironment; petrography; Pleistocene; Polynesia; Quaternary; reconstruction; sea-surface temperature; sedimentary rocks; shells; Society Islands; South Pacific; Southeast Pacific; spectra; stable isotopes; Tahiti; Tahiti Sea Level Expedition; upper Pleistocene; uranium;
.