江山—绍兴断裂带构造格局的新元古代SHRIMP 锆石U-Pb年龄证据

高林志1, 张 恒1, 丁孝忠1, 刘燕学1, 张传恒2, 黄志忠3, 许兴苗4, 周宗尧4

江山—绍兴断裂带构造格局的新元古代SHRIMP 锆石U-Pb年龄证据

高林志1, 张恒1, 丁孝忠1, 刘燕学1, 张传恒2, 黄志忠3, 许兴苗4, 周宗尧4

1.中国地质科学院地质研究所, 北京 100037; 2.中国地质大学(北京),北京 100083; 3.江西省地质调查院,江西南昌 330201; 4.浙江省地质调查院,浙江萧山 311203

刊出日期: 2014-06-15

SHRIMP zircon U-Pb dating of the Jiangshan-Shaoxing faulted zone in Zhejiang and Jiangxi

GAO Lin-zhi1, ZHANG Heng1, DING Xiao-zhong1, LIU Yan-xue1, ZHANG Chuan-heng2, HUANG Zhi-zhong3, XU Xing-miao4, ZHOU Zong-yao4

1. Institute of Geology, CAGS, Beijing 100037, China;2. China University of Geosciences, Beijing 100083, China;3. Jiangxi Institute of Geological Survey, Nanchang 330201, Jiangxi, China;4. Zhejiang Institute of Geological Survey, Xiaoshan 311203, Zhejiang, China

Publish Date: 15 June 2014

摘要

摘要: 报道采自双溪坞群不同岩组岩石样品的锆石年龄，其中，平水组英安质凝灰岩SHRIMP锆石U-Pb年龄为908.2±6.8Ma，双溪坞群北坞组安山岩年龄为901.6±5.5Ma，双溪坞群章村组火山角砾岩安山质角砾岩年龄为899±8Ma,上覆河上镇群骆家门组底砾岩（花岗闪长岩）SHRIMP锆石U-Pb年龄为878.96±4.5Ma。通过年龄数据探讨位于该断裂带的构造背景，依据该年龄数据限定区域地层对比和构造演化序列。锆石U-Pb年龄和地球化学标示了江山—绍兴断裂带北侧双溪坞群的沉积地层，地球化学分析表明该群代表了新元古代早期华南洋的中间岛弧。上述年龄为江山—绍兴断裂带变质地层的对比增添了可靠的年龄依据。
- 江山—绍兴断裂带 /
- 双溪坞群 /
- SHRIMP锆石U-Pb年龄 /
- 浙江
Abstract: This paper reports SHRIMP zircon U-Pb ages (908~878Ma) of andisite and tuff of the Early Neoproterozoic Shuanxiwu Group on the northern side of the Jiangshan-Shaoxing faulted zone and discusses the tectonic background and regional stratigraphic correlation and tectonic evolution of the Jiangshan-Shaoxing faulted zone. The SHRIMP U-Pb ages and geochemical characteristics indicate the Early Neoproterozoic inner arc of the Shuanxiwu Group on the northern side of the Jiangshan-Shaoxing faulted zone. The SHRIMP U-Pb dating data obtained by the authors can provide new evidence for the correlation of metamorphosed strata in the Jiangshan-Shaoxing faulted zone.
- Jiangshan-Shaoxing faulted zone /
- Shuangxiwu Group /
- SHRIMP zircon U-Pb ages /
- Zhejiang Province

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江山—绍兴断裂带构造格局的新元古代SHRIMP 锆石U-Pb年龄证据

1.中国地质科学院地质研究所, 北京 100037; 2.中国地质大学(北京),北京 100083; 3.江西省地质调查院,江西 南昌 330201; 4.浙江省地质调查院,浙江 萧山 311203

SHRIMP zircon U-Pb dating of the Jiangshan-Shaoxing faulted zone in Zhejiang and Jiangxi

1. Institute of Geology, CAGS, Beijing 100037, China;2. China University of Geosciences, Beijing 100083, China;3. Jiangxi Institute of Geological Survey, Nanchang 330201, Jiangxi, China;4. Zhejiang Institute of Geological Survey, Xiaoshan 311203, Zhejiang, China

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1.中国地质科学院地质研究所, 北京 100037; 2.中国地质大学(北京),北京 100083; 3.江西省地质调查院,江西南昌 330201; 4.浙江省地质调查院,浙江萧山 311203