Hydrological controls on marine chemistry in the Cryogenian Nanhua Basin (South China)

In order to explore Cryogenian seawater chemistry and its underlying controls, we present an integrated study of iron speciation, major and trace elements, and carbon isotopes of Mn‑carbonates and their host black shales in the Datangpo Formation from three drillcores (Gaodi, Xixibao and Changxingpo) in the Nanhua Basin, South China. A key aspect of this analysis was use of the B/Ga, Sr/Ba, and S/TOC proxies to evaluate paleosalinity variation...