Data sets

Estimates of reef and island age for the Chagos islands based on isotopic dating of fossil


Type
terrestrial
Subject
other
Lifeform
Stress
Contact
Charles Sheppard
Contact email
Charles.Sheppard@warwick.ac.uk
Start year
1996
End year
1996
Resource lineage
Data tables extracted directly from publication by Elizabeth Widman
Data format
xlsx
Description
In order to investigate the age and chronology of reef platform formation in Chagos, fossil corals cemented onto the reef platform were dated by the U/Th dating technique. Fossils were dated for the reef flats around Ile Anglais, Ile de la Passe, Boddam, Ile Fouquet, Jacobin, and Takamaka. Results show that no Chagos sample from these platforms is older than about 5.2 ka, indicating that the platform formation started after the Holocene sea-level high stand about 6.5 ka B.P.**Table 1:** U- and Th Isotope Concentrations, Ratios and Ages of Fossil Chagos Island corals.
Keywords
Coral fossils Reef age isotopes
Notes
Fossil were collect on the 1996 Friends of Chagos Expedition. G. Mengel and S. Niemann provided laboratory assistance. It is unclear from the publication collected the fossils or did specific laboratory tasks.
Link
Local link
Latitude
0.00000000
Longitude
0.00000000
Status
OA
Clearance
0
Local link
Eisenhauer 1999.xlsx
Authors
Dullo W , Heiss G , Sheppard Charles , Eisenhauer A .