Data associated with the publication: Carbon isotope trends of Precambrian-Cambrian carbonates in Southwestern Laurentia are robust to diagenetic overprinting

This dataset includes carbonate Ca isotope (‰, n = 173) and Mg isotope (‰, n = 42) compositions and Mg/Ca (mmol/mol), Sr/[Ca+Mg] (mmol/mol), Mn/[Ca+Mg] (mmol/mol), and U/[Ca+Mg] (µmol/mol) major and trace elemental ratios (n = 186) of standards and samples from the Dunfee and Esmeralda members of the Deep Spring Formation at Mount Dunfee, NV, the lower Wood Canyon Formation at Echo Canyon, CA, and the La Ciénega Formation at Cerro Rajón, SO. It also includes facies descriptions of the Dunfee and Esmeralda members of the Deep Spring Formation at Mount Dunfee, NV.