Marine & Environmental Sciences Faculty Articles
Annual Periodicity of the 18O16O and 13C12C ratios in the coral Montastrea annularis
Document Type
Article
Publication Date
7-1979
Publication Title
Geochimica et Cosmochimica Acta
Keywords
Montastrea annularis
ISSN
0016-7037
Volume
43
Issue/No.
7
First Page
1009
Last Page
1020
Abstract
The isotopic ratios 18O/16O and 13C/12C show an annual periodicity in the coral Montastrea annularis from Bermuda, Jamaica and Barbados. The abundances of 18O and 13C are positively correlated in the Jamaica and Barbados samples, but inversely related in the Bermuda sample. Annual high density growth bands are formed during the season of warmest water temperature at all 3 sites and are enriched in 16O. M. Annularis has a constant displacement from oxygen isotopic equilibrium and accurately records seasonal temperature variations via the temperature-dependent aragonite-water fractionation factor. Light intensity, through the activity of the coral's endosymbiotic algae, regulates the depth-dependent and seasonal variations in the skeletal carbon isotopic composition.
Additional Comments
Department of Energy contract #: 79EV10041.000; NSF grant #: OCE 77-25976
NSUWorks Citation
Fairbanks, Richard G., and Richard E. Dodge. 1979. "Annual periodicity of the 18O16O and 13C12C ratios in the coral Montastrea annularis." Geochimica et Cosmochimica Acta no. 43 (7):1009-1020. doi: http://dx.doi.org/10.1016/0016-7037(79)90090-5.
DOI
10.1016/0016-7037(79)90090-5
Comments
©Pergamon Press Ltd. 1979.