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| CORALS AND SCLEROSPONGES | ||||||||||
Jamaica Bay, Acklins Island - Sclerosponge Lead and Carbon Isotope Data |
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Lazareth, C.E., P. Willenz, J. Navez, E. Keppens, F. Dehairs, and L. André. 2000. Sclerosponges as a new potential recorder of environmental changes: Lead in Ceratoporella nicholsoni. Geology 28:515-518.
Start Year: 1724 AD End Year: 1983 AD Data: Please Cite Data Contributors! atlantic/acklins-sclerosponge2000.txt |
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Summary:Lead concentrations have been analyzed on a 223 yr profile through the aragonitic skeleton of the reef-building Caribbean sclerosponge Ceratoporella nicholsoni by using laser-ablation inductively coupled plasma¿mass spectrometry. A parallel study of the d13C distribution in the skeleton validates the previously established mean annual growth rate of 230 µm/yr, at least for long-term important environmental changes. The Pb trend in the specimen displays a general increase from 0.30 ppm ca. A.D. 1760 to 2.15 ppm ca. A.D. 1984; a major threefold increase occurred after 1930. This Pb profile is analogous to results acquired from ice or coral cores and clearly highlights the potential of sclerosponges as a new proxy of environmental changes for time series extending over several centuries.More Info on Corals and Sclerosponges |
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Parameters:del13C; Pb |
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Complete XML Record:noaa-coral-1896 (Last Revised: 2008-04-10 ) |
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