地质学报2012，Vol.86Issue(9)：1525-1540,16.
南秦岭铁瓦殿岩体的成岩时代及地质意义
Emplacing Age of the Tiewadian Pluton in the South Qinling Tectonic Belt and Its Geological Implications
摘要
Abstract
Tiewadian pluton is located in the contact borders between Hanyin, Shiquan and Ziyang countries in the South Qinling Tectonic Belt (SQTB) , Shaanxi Province, and consists chiefly of diorite, quartz diorite, quartz monzodiorite, quartz monzonite and monzogranite. LA-ICP-MS zircon U-Pb isotopic dating reveals three magmatic emplacement stages: early stage quartz monzonite emplaced at 742 ± 5 Ma, middle stage quartz diorite, quartz monzodiorite and monzogranite at - 722 Ma, late stage quartz diorite at 704± 4 Ma. The Tiewadian pluton shows comparable lithological assemblage, emplacing ages and geochemical features with felsic rocks of Hannan complex in the north margin of Yangtze Craton, indicating that they experienced similar magmatic and tectonic evolution in the similar geodynamic background, and that the Tiewadian pluton is an important geological record relating to the Neoproterozoic subduction in the SQTB. Key words: Tiewadian pluton; lithological assemblage; zircon U-Pb isotopic dating; south Qinling关键词
铁瓦殿岩体/岩石组合/锆石U-Pb同位素定年/南秦岭构造带/新元古代Key words
Tiewadian pluton/ lithological assemblage/ zircon U-Pb isotopic dating/ south Qinling tectonic belt/ Neoproterozoic引用本文复制引用
杨朋涛,刘树文,李秋根,王宗起,王伟,白翔..南秦岭铁瓦殿岩体的成岩时代及地质意义[J].地质学报,2012,86(9):1525-1540,16.基金项目
本文为"十二五"国家科技支撑计划(编号2011BAB04B05)、"十一五"国家科技支撑计划(编号2006BAB01A11)、国家自然科学基金项目(编号41072143,41072169)共同资助成果. （编号2011BAB04B05）
