摘要
根据对吉林南部马达岭组砂岩碎屑锆石SHRIMP U-Pb测年以及对白山—临江地区碎屑锆石年龄谱系对比研究结果,确定马达岭组中最年轻锆石为1.0 Ga,且没有中生代火山活动留下的任何记录。因此马达岭组时代非中生代,同时依据钓鱼台组平行不整合在马达岭组之上的接触关系而应将其时代置于新元古代青白口纪。
Evidence from SHRIMP U-Pb dating of Madaling Formation in southern Jilin,with compared results of detrital zircon U-Pb ages for Baishan-Linjiang area,indicates that the youngest age of detrital zircon of Madaling Formation was 1.0 Ga,and with absence of Mesozoic volcanic activity records.Based on the Diaoyutai Formation overlying unconformably the Madaling Formation,the geological age of Madaling Formation is considered to be the Neoproterozoic Qingbaikou Period rather than Mesozoic.
出处
《世界地质》
CAS
CSCD
2014年第2期266-274,共9页
World Geology
基金
中石油吉林油田公司勘探部科技项目(勘科10074)
