Skip to main content
WCS
Menu
Library
Library Catalog
eJournals & eBooks
WCS Research
Archives
Research Use
Finding Aids
Digital Collections
WCS History
WCS Research
Research Publications
Science Data
Services for WCS Researchers
Archives Shop
Bronx Zoo
Department of Tropical Research
Browse By Product
About Us
FAQs
Intern or Volunteer
Staff
Donate
Search WCS.org
Search
search
Popular Search Terms
WCS History
Library and Archives
Library and Archives Menu
Library
Archives
WCS Research
Archives Shop
About Us
Donate
en
fr
Title
Spatial variability of initial 230Th/232Th in modern Porites from the inshore region of the Great Barrier Reef
Author(s)
Clark, T.R.;Zhaoa, J.;Feng, Y.;Done, T.J.;Jupiter, S.;Lough, J.;M. Pandolfi, J.M.
Published
2012
Publisher
Geochimica et Cosmochimica Acta
Abstract
± 1.4 × 10−6) that encompasses the full variation of the 39 230Th/232Th0 measurements is recommended as a more appropriate value for initial 230Th corrections for U-series dating of most Porites samples from inshore regions of the GBR. This will result in significant improvement in both the precision and accuracy of the corrected 230Th ages related to those based on the assumed bulk Earth 230Th/232Th0 value of 4.3 ± 4.3 × 10−6. However, several anomalously high 230Th/232Th0 values reaching up to 28.0 ± 1.6 × 10−6 occasionally found in some coral annual bands coinciding with El Niño years imply high 230Th/232Th0 sources and highlight the complexities of understanding 230Th/232Th0 variability. For U-series dating of young coral samples from such sites where anomalous 230Th/232Th0 values occur, we suggest replicate dating of multiple growth bands with known age difference to verify age accuracy.
Access Full Text
A full-text copy of this article may be available. Please email the
WCS Library
to request.
Back
PUB13582