吉林南部马达岭组时代再研究:基于碎屑锆石SHRIMP测年证据  

Restudy on geological age of Madaling Formation in southern Jilin: evidence from detrital zircon SHRIMP U-Pb dating

作　　者：刘华[1] 

机构地区：[1]吉林油田公司勘探开发研究院,吉林松原138000

出　　处：《世界地质》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)

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.

关 键 词：青白口纪 锆石SHRIMP U-PB测年 马达岭组 吉林南部 

分 类 号：P597.3[天文地球—地球化学] P534.3[天文地球—地质学]