Crustal evolution recorded by Neoproterozoic basal conglomerates, Jiangnan Orogen: U-Pb and Hf isotopes of detrital zircons
- 作者：王迪王孝磊
- 会议时间：2012-09-21
- 关键词：Detrital zircons ; U-Pb ages ; Hf isotopes ; Neoproterozoic reconstruction ; Yangtze Block ; Crustal evolution
- 作者单位：王迪(南京大学地球科学与工程学院,江苏南京)王孝磊(南京大学地球科学与工程学院,江苏南京;威斯康辛大学地球科学系,威斯康辛州麦迪逊)
- 母体文献：2012年全国岩石学与地球动力学研讨会论文集
- 会议名称：2012年全国岩石学与地球动力学研讨会
- 会议地点：兰州
- 主办单位：中国地质学会
- 语种：chi
摘要
Abstract Basal conglomerates can preserve some important information for crustal evolution of an orogenic belt.Detailed LA-ICP-MS U-Pb dating and LA-MC-ICP-MS Lu-Hf isotope analysis were carried out on detrital zircons from the basal conglomerates of the Luojiamen,Baizhu and Xiuning Formations in the Jiangnan Orogen,South China.U-Pb dating results suggest that the maximum depositional ages for the above three formations were ~860Ma,~825Ma and ~765Ma respectively.