地质通报Issue(2)：447-455,9.
浙西地区新元古代骆家门组SHRIMP锆石U-Pb年龄及其地质意义
SHRIMP zircon U-Pb dating of the Luojiamen Forma-tion in western Zhejiang Province and its geological implications
摘要
Abstract
Zircon dating of tuff bedding is reported for the first time from the Luojiamen Formation in the Heshangzheng Group. Two groups of tuff SHRIMP zircon U-Pb ages of the Luojiamen Formation were obtained, i.e., 824±5Ma and 832±6Ma together with 791±15Ma. In addition, the zircons of granite conglomerate from the bottom of the Luojiamen Formation were also measured, with the SHRIMP zircon U-Pb age being 901 ± 9Ma, which further constraints the stratigraphic age of the Luojiamen Formation. Zircon dating of the Luojiamen Formation has completed the stratigraphic age of the Heshangzhen and Shuangxiwu groups which lie over and below the interface of the Shengong Movement, which is of great importance for stratigraphic correlation and determina⁃tion of the stratigraphic framework of the Jiangnan Orogenic Belt. Combined with the age of the Shuangxiwu Group which under⁃lies the Luojiamen Formation in angle unconformity, these stratigraphic ages provide the basis for time constraints and contrast of the Shengong Movement.关键词
浙江/骆家门组/凝灰岩/新元古代/SHRIMP锆石U-Pb年龄Key words
Zhejiang Province/Luojiamen Formation/tuff/Neoproterozoic/SHRIMP zircon U-Pb ages分类
天文与地球科学引用本文复制引用
张恒,高林志,李廷栋,耿树方,刘燕学,丁孝忠,史志刚..浙西地区新元古代骆家门组SHRIMP锆石U-Pb年龄及其地质意义[J].地质通报,2015,(2):447-455,9.基金项目
中国地质调查局项目（编号121201011120131）和全国油气基础地质研究与编图项目(编号2011ZX05043-005) （编号2011ZX05043-005）
