Evolution of oceanic molybdenum and uranium reservoir size around the Ediacaran-Cambrian transition: Evidence from western Zhejiang, South China

- Redox condition around the ECB from drill core materials at western Zhejiang is analyzed.
- Three intervals of persistent euxinia occurred in the Lantian and Hetang formations.
- Oceanic U and Mo reservoir did not expand in Qiantang Gulf until Cambrian Stage 4.
- Expansion of oxic waters in Qiantang Gulf postdated the main phase of Cambrian diversification.