Li, C, O isotope and metal/Ca data for low-Mg calcite oyster shell samples and water samples collected along an estuarine salinity gradient in coastal North Carolina

Lithium isotope, carbon isotope, oxygen isotope, and metal/Ca data provided for bulk samples from low-Mg calcite oyster shells and water samples. Samples were taken along an estuary salinity gradient in coastal North Carolina (USA). The purpose of this dataset is to elucidate possible environmental and biological controls on geochemical signals in modern oyster calcite.