武当地块耀岭河群火山岩的时代归属:单锆石U-Pb年龄的制约 Forming Age of the Volcanic Rocks of the Yaolingh

排行榜 收藏 打印 发给朋友 举报 来源: 《地质学报》 发布者:cjk3d
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武当地块耀岭河群火山岩的时代归属:单锆石U-Pb年龄的制约

Forming Age of the Volcanic Rocks of the Yaolinghe Group from Wudang Block, Southern Qinling Mountain: Constraint from Grain-Zircon U-Pb Dating

一般认为武当地块耀岭河群火山岩成岩年龄是700~1000Ma,与全球Rodinia超大陆裂解作用有关.本文从武当地块不同地点的耀岭河群火山岩中获得13颗锆石进行U-Pb法年龄测定,结果显示其年龄值具有高度的一致性,时代为632±1Ma,属震旦纪底界年龄,滞后于全球Rodinia超大陆裂解作用.作者认为本文测定的这组年龄值代表了耀岭河群火山岩的成岩年龄.耀岭河群火山岩的成岩年龄精确厘定对研究耀岭河群火山岩的地质含义有一定参考价值,同时也可能对秦岭Rodinia超大陆裂解等大地构造观点产生影响.水利论文q4V"O-Ej

作 者: 蔡志勇 熊小林 罗洪 吴德宽 孙三才 饶帮良 王寿琼 CAI Zhiyong XIONG Xiaolin LUO Hong WU Dekuang SUN Sancai RAO Bangliang WANG Shouqiong  
作者单位:蔡志勇,CAI Zhiyong(中国科学院广州地球化学研究所,510640;中国科学院研究生院,北京,100039;鄂西北地质矿产调查所,湖北襄樊,441003)
m r0eN|)Y'Vf[0熊小林,XIONG Xiaolin(中国科学院广州地球化学研究所,510640)
*o0C(q E(u W7E0罗洪,吴德宽,孙三才,饶帮良,王寿琼,LUO Hong,WU Dekuang,SUN Sancai,RAO Bangliang,WANG Shouqiong(鄂西北地质矿产调查所,湖北襄樊,441003) 
刊 名:地质学报  ISTIC PKU
英文刊名:ACTA GEOLOGICA SINICA 
年,卷(期):2007 81(5) 
分类号:P5 
关键词:武当地块   耀岭河群   火山岩   单锆石U-Pb年龄   早震旦纪  
机标关键词:武当地块耀岭河群火山岩时代归属单锆石成岩年龄制约Wudang BlockYaolinghe Group超大陆裂解裂解作用年龄测定观点产生底界年龄大地构造震旦纪一致性滞后显示秦岭 
基金项目:国土资源部科研项目 
下一篇:柴达木盆地北缘塔塔楞环斑花岗岩的SHRIMP年龄 The SHRIMP Age of Tatalin Rapakivi Granite at the Nort
上一篇:新疆北部晚古生代的底侵作用——来自橄榄玄粗岩与埃达克岩的证据 Underplating During Late Paleozoic in North Xinj
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