地质通报2012，Vol.31Issue(1)：75-81,7.
浙江诸暨地区石角-璜山侵入岩LA-ICP-MS锆石U-Pb年龄——对超镁铁质球状岩成因的启示
LA-ICP-MS zircon U-Pb ages of the Shijiao-Huangshan intrusive rocks in Zhuji area, Zhejiang Province: implications for the petrogenesis of the ultramafic orbicular rocks.
摘要
Abstract
LA-ICP-MS zircon U-Pb dating work was carried out for the Shijiao-Huangshan intrusive rocks from Zhuji area of Zhejiang Province, which is also tectonically adjacent to the Jiangshan-Shaoxing fault of eastern Jiangnan orogen. The dating results indicate that the Shijiao amphibole pyroxenite and Huangshan quartz diorites were crystallized at 844+3 Ma and 818 ±6 Ma, respectively, suggesting that they, including the Shijiao orbicular perknites, were probably formed in different periods. Combined with other new available dating results, the authors hold that the Neoproterozoic diorites along the Jiangshan-Shaoxing fault might have been formed during the span of ca. 930-810 Ma. Further studies of the petrology and petrogenesis of the ultramanc rocks and diorites will shed light on the Neoproterozoic amalgamation processes between the Yangtze and Cathaysia blocks.关键词
LA-ICP-MS锆石U-Pb定年/球状岩/新元古代/诸暨地区/江南造山带Key words
LA-ICP-MS zircon U-Pb dating/ orbicular rocks/ Neoproterozoic/ Zhuji area/ Jiangnan orogen分类
天文与地球科学引用本文复制引用
王孝磊,舒徐洁,邢光福,谢思文,张春晖,夏晗..浙江诸暨地区石角-璜山侵入岩LA-ICP-MS锆石U-Pb年龄——对超镁铁质球状岩成因的启示[J].地质通报,2012,31(1):75-81,7.基金项目
国土资源部公益性行业科研专项《华夏-扬子板块结合带北东段的形成与破坏及其成矿作用》(编号:200811015)和国家自然科学基金面上项目《江南造山带新元古代典型花岗岩类的形成及其侵位-剥蚀的时差研究》(批准号:41072144) （编号:200811015）
