Supplemental Material: The influence of Late Ordovician volcanism on the marine environment based on high-resolution mercury data from South China

Supplemental Data Set 1. Organic carbon isotopes from the first round of sampling in the Muchanggou section. Supplemental Data Set 2. Elemental data from the second round of sampling in the Muchanggou section. Supplemental Text. Carbon isotope mass balance calculations and numerical simulation of the global carbon cycle.