Chemical characteristics of seawater in the Early Cambrian: Results of a fluid-inclusion study of halite from the Tyret' deposit (East Siberia)

摘要

The composition of fluid inclusions in Lower Cambrian halite from the Tyret' deposit (East Siberia) indicates that a Ca-rich (Na-K-Mg-Ca-Cl) seawater prevailed in Early Cambrian time, but local factors (such as salt redeposition and dolomitization of carbonates) exerted a major control over the composition as well, and thus those factors should be taken into consideration during the reconstruction of seawater composition for Early Cambrian time.