摘要
根据岩石化学、微量元素、稀土元素和Sm-Nd同位素的研究,浙西北富阳章村、绍兴平水和诸暨陈蔡地区出露的双溪坞群火山岩及其有关侵入岩,具有相近的地球化学特征,同属岛弧成因的一套钙碱性系列火山岩和花岗岩类,其形成年代为904—875Ma左右,物质来源以亏损地幔为主。
Based on the evidence developed from their petrochemical composition, trace elements,rare-earth elements and Sm-Nd isotopic composition, the Shuangxiwu Group volcanic rocks andrelated granitoids, exposed in Zhangcun, Pingshui and Chencai, NW Zhejiang Provinve, havesimilar geochemical signatures and belong to cale-alkali series rocks of island-arc type. Theywere derived mainly from a depleted mantle source and emplaced between 904--875 Ma as re-vealed by Pb/Pb dating of zircon fraction.
出处
《地球化学》
CAS
CSCD
北大核心
1993年第1期18-27,共10页
Geochimica
