Archean rocks are widespread in North China and constitute an essential part of the Sino-Korean Craton which is one of the oldest continental blocks. Recently major representative Archean metavolcanites in North China...Archean rocks are widespread in North China and constitute an essential part of the Sino-Korean Craton which is one of the oldest continental blocks. Recently major representative Archean metavolcanites in North China have been dated by the Sm-Nd isochron method. The composition and evolution of Archean upper mantle in various regions of North China have been discussed in the light of accurate isochron ages and their initial ε<sub>Nd</sub>（T）展开更多
文摘Archean rocks are widespread in North China and constitute an essential part of the Sino-Korean Craton which is one of the oldest continental blocks. Recently major representative Archean metavolcanites in North China have been dated by the Sm-Nd isochron method. The composition and evolution of Archean upper mantle in various regions of North China have been discussed in the light of accurate isochron ages and their initial ε<sub>Nd</sub>（T）
