P588.11 P54
国家自然科学基金(编号49832030,49772143,49572140)
- LI Jianghai,HOU Guiting,QIAN Xianglin,H. C. HALLS,Don DAVIS Department of Geology,Peking University,Beijing,100871,China Department of Geology,University of Toronto at Mississauga,Mississauga,Ont. L5L 1C6,Canada Jack Satterly Geochronological Laboratory,Royal Ontario Museum,Toronto,Ont. M5S 2C6. Canada
LI Jianghai,HOU Guiting,QIAN Xianglin,H. C. HALLS,Don DAVIS Department of Geology,Peking University,Beijing,100871,China Department of Geology,University of Toronto at Mississauga,Mississauga,Ont. L5L 1C6,Canada Jack Satterly Geochronological Laboratory,Royal Ontario Museum,Toronto,Ont. M5S 2C6. Canada
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华北克拉通中北部变质基底发育大规模的前寒武纪基性岩墙群,由于基性岩墙同位素定年技术存在问题,因此一直未获得岩墙群的确切年龄数据。本文利用单颗粒锆石U-Pb化学法,首次获得恒山地区北西向基性岩墙群的U-Pb年龄为1769.1±2.5Ma,并证明它代表基性岩墙群的侵位年龄,这一年龄数据也是华北克拉通大规模分布的未变质基性岩墙群已知的最古老年龄。综合分析同期岩浆活动的同位素年龄记录,本文提出中元古代早期华北的岩浆侵位发生于伸展构造背景下。
引用本文
李江海,侯贵廷,钱祥麟,H. C. HALLS, Don DAVIS.2001.恒山中元古代早期基性岩墙群的单颗粒锆石U—Pb年龄及其克拉通构造演化意义[J].地质论评,47(3):234-238,[DOI].
LI Jianghai, HOU Guiting, QIAN Xianglin, H. C. HALLS, Don DAVIS Department of Geology, Peking University, Beijing,,China Department of Geology, University of Toronto at Mississauga, Mississauga, Ont. LL C, Canada Jack Satterly Geochronological Laboratory, Royal Ontario Museum, Toronto, Ont. MS C. Canada.2001. Single-Zircon U-Pb Age of the Initial Mesoproterozoic Basic Dike Swarms in Hengshan Mountain and Its Implication for the Tectonic Evolution of the North China Craton[J]. Geological Review,47(3):234-238.
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