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山东省前寒武纪地层形成时代——同位素地质测年的证据
引用本文:王世进,万渝生,宋志勇,杨恩秀,董春艳,王伟.山东省前寒武纪地层形成时代——同位素地质测年的证据[J].山东地质,2011(11):1-6.
作者姓名:王世进  万渝生  宋志勇  杨恩秀  董春艳  王伟
作者单位:[1]山东省地质调查院,山东济南250013 [2]中国地质科学院地质研究所,北京100037 [3]北京离子探针中心,北京100037 [4]中国科学院地质与地球物理研究所,北京100029
摘    要:精确同位素地质测年结果表明,沂水岩群形成时代为2 760~2 700Ma,泰山岩群雁翎关岩组、柳杭岩组下亚组和孟家屯岩组形成时代为2 750~2 700Ma,均属新太古代早期;泰山岩群柳杭岩组上亚组、山草峪岩组形成时代为2 600~2 540Ma(被峄山岩套石英闪长岩和傲徕山岩套二长花岗岩侵入),济宁岩群岩浆锆石年龄(2 561±24)Ma,均属新太古代晚期。荆山群和粉子山群的形成时代为古元古代晚期。芝罘群碎屑锆石U-Pb年龄(1 658±32)Ma、(1 792±43)Ma,形成时代为中元古代。云台岩群花果山组碎屑锆石U-Pb年龄800~740Ma,形成时代为新元古代。

关 键 词:前寒武纪地层  形成时代  同位素地质测年  山东省

Formation of Precambrian Strata in Shandong Province——Isotopic Dating Evidences
WANG Shijin,WAN Yusheng,SONG Zhiyong,YANG Enxiu,DONG Chuyan,WANG Wei.Formation of Precambrian Strata in Shandong Province——Isotopic Dating Evidences[J].Geology of Shandong,2011(11):1-6.
Authors:WANG Shijin  WAN Yusheng  SONG Zhiyong  YANG Enxiu  DONG Chuyan  WANG Wei
Institution:1.Shandong Geological Surveying Institute,Shandong Jinan 250013,China;2.Chinese Academy of Geological Sciences,Beijing 100037,China;3.Beijing SHRIMP Center,Beijing 100037,China;4.Geology and Geophysics Institute of Chinese Academy of Sciences,Beijing 100029,China)
Abstract:As showed by precise isotopic dating results,Yishui group was formed in the 2760~2700Ma,while Yanlingguan formation in Taishan group,Xiayazu formation and Mengjiatun formation in Liuhang group were formed in 2750~2700Ma.They all belong to early period of Neoarchean.Shangya formation and Shancaoyu formation of Liuhang formation in Taishan group were formed in 2600~2540Ma(intruded by quartz diorite rock units in Yishan rock group and monzogranite in Aolaishan rock group),while zircons ages of Jining group was(2561±24)Ma.They all belong to the late Archean.The formation period of Jingshan group and Fenzishan group is late Paleoproterozoic.Detrital zircon U-Pb age of Zhifu group was(1658±32) Ma and(1792±43)Ma.They were formed in the Mesoproterozoic.Detrital zircon U-Pb age of Huaguoshan group is 800~740Ma,and was formed in the Neoproterozoic.
Keywords:Precambrian  formation period  isotopic dating  Shandong province
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