A large metabolic carbon contribution to the δ13C record in marine aragonitic bivalve shells
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A large metabolic carbon contribution to the δC record in marine aragonitic bivalve shells
David P. Gillikin , Anne Lorrain, Li Meng and Frank Dehairs 5 Dept. of Earth Science and Geography, Vassar College, Box 475, 124 Raymond Avenue, Poughkeepsie, NY 12604, USA. Tel.: (845) 437-7138; fax: (845) 437-7577; E-mail: [email protected]; Corresponding author. IRD, US CHRONOS, LASAA Centre IRD de Brest, BP 70, 29280 Plouzané, France. 10 Department of Analytical and Environmental Chemis...
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It is well known that the incorporation of isotopically light metabolic carbon (CM) significantly affects the stable carbon isotope (dC) signal recorded in biogenic carbonates. This can obscure the record of dC of seawater dissolved inorganic carbon (dCDIC) potentially archived in the shell carbonate. To assess the CM contribution to Mercenaria mercenaria shells collected in North Carolina, USA...
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Barium/Calcium profiles of bivalve shells are characterized by flat background signals periodically interrupted with sharp peaks, with the background signals correlated with water Ba/Ca. To test if the peaks are an environmental signal related to productivity, we analyzed high resolution Ba/Ca profiles in bivalve shells that grew adjacent to one another. Two aragonitic Saxidomus giganteus show ...
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تاریخ انتشار 2017