全文快速搜索:          
引用本文:吴才来1 董树文2 王次松3 高前明3 闫永涛3 李 翔3 郜源红1 雷 敏1 秦海鹏1 李名则1 刘春花1. 铜陵地区晚古生代岩浆活动的发现:来自凤凰山岩体ZK66钻孔岩心辉绿岩锆石U–Pb定年的证据[J]. 中国地质, 2013, 40(3): 715-729.
WU Cai-lai1, DONG Shu-wen2, WANG Ci-song3, GAO Qian-ming3, YAN Yong-tao3, LI Xiang3, GAO Yuan-hong1, LEI Min1, QIN Hai-peng1, LI Ming-ze1, LIU Chun-hua1. The discovery of late Paleozoic magmatism in Tongling area:Evidence from zircon U-Pb dating of diabse in Fenghuangshan ZK 66 drilling core[J]. Geology in China, 2013, 40(3): 715-729(in Chinese with English abstract).
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 2184次   下载 2483 本文二维码信息
码上扫一扫!
分享到: 微信 更多
铜陵地区晚古生代岩浆活动的发现:来自凤凰山岩体ZK66钻孔岩心辉绿岩锆石U–Pb定年的证据
吴才来1 董树文2 王次松3 高前明3 闫永涛3 李 翔3 郜源红1 雷 敏1 秦海鹏1 李名则1 刘春花11,2,3
1. 中国地质科学院地质研究所,北京100037;2. 中国地质科学院,北京100037;3. 安徽省地质矿产局321地质队,安徽 铜陵244033
摘要:
提要:凤凰山花岗闪长岩是铜陵地区出露面积最大的岩体,约10 km2,属高钾钙碱性系列。位于该岩体西北角的朱家山附近ZK66钻孔揭示,岩体超覆于三叠纪碳酸盐岩地层之上。除在浅部见到花岗闪长岩之外,深部主要见到晚泥盆世—二叠纪地层。特别是在石炭纪大理岩中见到辉绿岩和花岗斑岩,其锆石LA-ICP-MS U-Pb年龄分别为304 Ma和132 Ma,证明本区存在晚古生代岩浆活动,而中生代花岗质岩浆活动可能持续到132 Ma。晚石炭世辉绿岩的发现,说明该时期海底是一种拉张环境,海底喷流作用可能与岩浆活动有密切的成因关系,为该时期形成大型矿床奠定了基础。
关键词:  锆石U–Pb定年  辉绿岩  花岗斑岩  钻孔ZK66  铜陵朱家山
DOI:
分类号:
基金项目:国家专项(SinoProbe-05-05)、自然科学基金项目(40921001、49772106、40472034和40672049) 和中国地质调查局地调项目(1212011120160, 1212010918007, 1212010818090, 1212010611803和1212010711816)共同资助。
The discovery of late Paleozoic magmatism in Tongling area:Evidence from zircon U-Pb dating of diabse in Fenghuangshan ZK 66 drilling core
WU Cai-lai1, DONG Shu-wen2, WANG Ci-song3, GAO Qian-ming3, YAN Yong-tao3, LI Xiang3, GAO Yuan-hong1, LEI Min1, QIN Hai-peng1, LI Ming-ze1, LIU Chun-hua11,2,3
1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;2. Chinese Academy of Geological Sciences, Beijing 100037, China;3. No. 321 Geological Party, Anhui Bureau of Geology and Mineral Resources, Tongling 244033, Anhui, China
Abstract:
Abstract:Fenghuangshan granodiorite with an outcropped area of approximately 10 km2 is the largest pluton in Tongling area, belonging to high-K calc-alkaline series. ZK 66 drill hole at Zhujiashan located in the northwest corner of the Fenghuangshan pluton revealed that the pluton overlaps on the top of Triassic carbonate strata. Besides the granodiorite seen in the shallow part of the ZK 66 drill hole, the Late Devonian-Permian strata can also be found in the depth of the drill hole. Especially, the diabase with an age of 304 Ma and the granite porphyry with an age of 132 Ma were found in the Carboniferous marble, indicating the existence of late Paleozoic magmatism and probably the Mesozoic granite magmatism which lasted until 132Ma. The discovery of the late Carboniferous diabase reveals a sea-floor spreading environment and also indicates the close genetic relationship between the marine exhalation and the magmatism, which laid a solid foundation for the formation of a large ore deposit in that period.
Key words:  zircon U-Pb dating  diabase  granite porphyry  drill hole ZK 66  Zhujiashan of Tongling