Figure 1: Isotopic compositions of MTCs.
From: Molar tooth carbonates and benthic methane fluxes in Proterozoic oceans
(a) S isotopic compositions of CAS from MT calcispars (MT) and host rocks (HR). (b) Cross-plot of Mg/Ca (molar ratio) versus δ26Mg. The argillaceous host rock has higher Mg/Ca ratios and is enriched in 26Mg than MT calcispars. (c) C isotopic compositions of MT calcispars (MT) versus host rock (HR) of four samples (A, B, C and D).
