| 浙江诸暨新元古代后造山铝质A型花岗岩的厘定 |
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| 引用本文： | 周宇章,邢光福,杨祝良,沈加林,陈荣,包超民,魏乃颐.浙江诸暨新元古代后造山铝质A型花岗岩的厘定[J].地球学报,2006,27(2):107-113. |
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| 作者姓名： | 周宇章 邢光福 杨祝良 沈加林 陈荣 包超民 魏乃颐 |
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| 作者单位： | 中国科学院广州地球化学研究所，510640;国土资源部南京地质矿产研究所，210016;国土资源部南京地质矿产研究所，210016;国土资源部南京地质矿产研究所，210016;国土资源部南京地质矿产研究所，210016;国土资源部南京地质矿产研究所，210016;国土资源部南京地质矿产研究所，210016;国土资源部南京地质矿产研究所，210016 |
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| 基金项目： | 1∶25万嵊县幅区域地质调查项目(编号:200013000124); 中国地质调查局综合研究项目(编号:200113000053、200313000038) |
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| 摘 要： | 浙江诸暨道林山地区新元古代钾长花岗岩和辉绿岩组成双峰式侵入岩组合,本文讨论了它们的野外地质形态、年代学及岩石学等特征,确定钾长花岗岩属铝质花岗岩类;进一步的研究表明,该钾长花岗岩体属典型的后造山A型花岗岩(A2型/PA型),其单颗粒锆石UPb年龄为816Ma,这是华南地区迄今为止发现的最早的A型花岗岩,同时表明Rodinia超大陆已进入裂解高峰期。由于该裂解的主要时期在825Ma,我们推断华南为Rodinia超大陆裂解的中心。
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| 关 键 词： | Rodinia 后造山A型花岗岩 双峰式侵入岩 新元古代 浙江诸暨 |
Recognition of Neoproterozoic Post-Orogenic Aluminous A-type Granite in Zhuji, Zhejiang Province |
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| ZHOU Yu-zhang,XING Guang-fu,YANG Zhu-liang,SHEn Jia-lin,CHEN Rong,BAO Chao-min and WEI Nai-yi.Recognition of Neoproterozoic Post-Orogenic Aluminous A-type Granite in Zhuji, Zhejiang Province[J].Acta Geoscientia Sinica,2006,27(2):107-113. |
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| Authors: | ZHOU Yu-zhang XING Guang-fu YANG Zhu-liang SHEn Jia-lin CHEN Rong BAO Chao-min and WEI Nai-yi |
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| Institution: | Guangzhou Institute of Geochemistry, Guangzhou, Guangdong, 510640; Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu, 210016;Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu, 210016;Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu, 210016;Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu, 210016;Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu, 210016;Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu, 210016;Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu, 210016 |
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| Abstract: | The Neoproterozoic bimodal intrusive association in Daolinshan area of Zhuji consists of moyite and diabase. Based on its field characteristics as well as dating and petrologic features, the authors hold that the granite belongs to the aluminous type. Furthermore, it is confirmed that the granite is of the typical post-orogenic A-type (A2 or PA type). The single zircon age is 816Ma, which suggests that the granite is the earliest A-type granite ever found in South China, and that the breakup of the Supercontinent Rodinia was strong at that time. In view of the main breakup period (825 Ma), it is considered that South China was the center of the breakup of Supercontinent Rodinia. |
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| Keywords: | Rodinia post-orogenic A-type granite bimodal intrusive rocks Neoproterozoic Zhuji Zhejiang Province |
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