摘要
湖北1∶5万水月寺幅、雾渡河幅区域地质调查工作,在扬子陆核黄陵基底物质组成及其时代调查研究方面取得新进展。变质地层方面,确认野马洞岩组属太古代绿岩带的残留,解体了原元古代黄凉河岩组,定义力耳坪岩组为古元古代蛇绿混杂岩,限定周家河岩组为新太古代;岩石方面,发现古太古代地质实体,识别了新太古代岩浆事件,确认了白竹坪火山岩建造时代为古元古代,重新厘定了南部新元古代岩浆演化序列,总结了区域的构造演化历史。这些成果对于推动黄陵基底乃至扬子克拉通其他前寒武纪结晶基底的地质问题研究具有引导作用。
The regional geological survey of 1∶50000 Shuiyuesi sheet and Wuduhe sheet in Hubei Province has made new progress in the material composition and age of the Huangling basement in the Yangtze craton.In terms of metamorphic strata,it is confirmed that the Yemadong Formation belongs to the remains of the early Paleolithic greenstone belt.The original Huanglianghe Formation of the Proterozoic strata is disintegrated,and the Lierping Formation is defined as the Palaeoproterozoic ophiolitic melange.The age of the Zhoujiahe Formation is limited to the Neoarchean.In the aspect of rock,the Palaeoarchaean geological entity has been discovered,and the Late Archean magmatism has been identified.It is confirmed that the age of Baizhuping Volcanic Formation is Palaeoproterozoic,and the southern Neoproterozoic magma evolution sequence is re-determined.The authors summarize regional tectonic evolution history.These results have a guiding role in promoting the geological problems of the Huangling basement and other former Cambrian crystalline basement of the Yangtze Craton.
作者
周舟
魏运许
牟宗玉
李方会
段其发
Zhou Zhou;Wei Yunxu;Mou Zongyu;Li Fanghui;Duan Qifa(Seventh Geological Brigade of Hubei Geological Bureau,Yichang,Hubei 443100;Wuham Center of China Geological Survey,Wuhan,Hubei 430205)
出处
《资源环境与工程》
2019年第S01期1-6,共6页
Resources Environment & Engineering
基金
湖北1∶5万水月寺幅、雾渡河幅区域地质调查(项目编号:DD20160029-02)
关键词
扬子陆核
黄陵
地质调查
物质组成
时代
Yangtze Continental Nuclens
Huangling
geological survey
material composition
age
