According tu the characteristics uf lithufacies assemblages,the metallogenetic depth of the electrum lucated in the caldera, the characteristics of wall-rock alteration zonation, the regularity uf metallugenic element zonatiun,the typomorphuc characteristic uf pyrite in the vein, and the estimation uf denudatiun rate, the Bamao caldera has been denuded abuut 500m,be longing to a type o.

Magmatism of Bamao caldera, Zhejiang province: Composite evolution of poly-mechanism in open system.;