中国地质2013，Vol.40Issue(3)：715-729,15.
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
The discovery of late Paleozoic magmatism in Tongling area:Evidence from zircon U-Pb dating of diabse in Fenghuangshan ZK 66 drilling core
摘要
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 comer 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.关键词
锆石U-Pb定年/辉绿岩/花岗斑岩/钻孔ZK66/铜陵朱家山Key words
zircon U-Pb dating/ diabase/ granite porphyry/ drill hole ZK 66/ Zhujiashan of Tongling分类
天文与地球科学引用本文复制引用
吴才来,董树文,王次松,高前明,闫永涛,李翔,郜源红,雷敏,秦海鹏..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):715-729,15.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. （SinoProbe-05-05）
