TRACE ELEMENTS IN RECENT MOLLUSK SHELLS

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Abstract
Analyses were performed for iron, magnesium, manganese, strontium, barium, and mineralogy in the shells of 7 species of marine mollusks collected over much of their present‐day environmental range. Correlations between the shell composition and water temperature and salinity were determined. While a number of significant relationships were observed, these are generally too weak to be used for paleoecological determinations and are not consistent between species. Differences in salinity cause greater changes in shell composition than differences in temperature, but salinities above 25‰ do not greatly affect the shell composition.

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