试论浙江建德群和磨石山群时代  

Discussion of ages of the Jiande group and the Moshishan group in Zhejiang

作　　者：汪庆华 

机构地区：[1]浙江省地质调查院,浙江萧山311201

出　　处：《火山地质与矿产》2001年第3期163-169,共7页Volcanology & Mineral Resources

摘　　要：根据 8 0年代以来对浙江中生代晚期火山岩同位素年代学的研究资料 ,浙江省建德群和磨石山群火山岩年龄在 135～ 117Ma之间 ,永康群、天台群和衢江群火山岩年龄在 111～90Ma。结合近年来中国东部侏罗—白垩系界线研究的新成果 。Based on isotopic dating data of late Mesozoic volcanic rocks in Zhejinag since 1980, the age ranges of both the Jiande Group and the Moshishan Group are in 135～117Ma, and those of the Yongkang Group, the Tiantai Group and the Qujiang Group are between 111～90Ma. According to the isotopic ages and new achievements on Juro-Cretaceous boundaries in eastern China, the Jiande Group and the Moshishan can be dated to be Cretaceous.

关 键 词：地质年代 建德群 磨石山群 浙江 侏罗-白垩系 早白垩世 火山岩 永康群 天台群 

分 类 号：P534.53[天文地球—古生物学与地层学]