地质学报2012，Vol.86Issue(4)：619-625,7.
安徽潜山县双河大理岩锆石U-Pb年龄及其地质意义
Zircon U-Pb Ages of Marble from Shuanghe Qianshan County and Their Geological Significance
摘要
Abstract
Lithochemical compositions) trace elements and rare earth elements of the marble in Shuanghe were analyzed in this study. The positions of metamorphic zircons and metamorphic complex zircon were determined using CL zircon image. The dating results are listed as follows: 1) The older core "inherited zircon" in the metamorphic complex zircon were measured at 32 points with ages ranging from 2357 Ma to 342 Ma, 15 of which belong to Proterozoic era with ages range from 2357 Ma to 572 Ma, 17 to the Paleozoic from 524 Ma to 342 Ma. 2) 8 points had been tested in the metamorphic zircons, and ages of 5 points fall with the scope of 249 Ma to 234 Ma corresponding to the UHP metamorphic time. The ages of 228～221 Ma represent retrograde time. Existence of a number of magmatic detrital zircons, I. E. Inherite zircons, indicates that protolith of the Shuanghe marble rock is likely the argillaceous limestone with an age of later than the Paleozoic Era.关键词
锆石U-Pb年龄/大理岩/双河/潜山县/安徽省Key words
zircon U-Pb ages/ marble/ Shuanghe/ Qianshan County/ Anhui Province引用本文复制引用
夏斌,袁亚娟,张玉泉,王敏,夏连泽,李贺,汪方跃,张红,吴维平..安徽潜山县双河大理岩锆石U-Pb年龄及其地质意义[J].地质学报,2012,86(4):619-625,7.基金项目
本文为国家重点基础研究发展计划“973”项目(编号2009CB219401)和中国科学院知识创新项目(编号0734021)联合资助的成果. （编号2009CB219401）
