中国地质Issue(1)：169-179,11.
黑龙江省跃进山铜金矿床花岗斑岩锆石U-Pb定年及地质意义
The dating of ore-bearing granite porphyry in the Yuejinshan skarn Cu-Au deposit, Heilongjiang Province, and its tectonic significance
摘要
Abstract
The Yuejinshan Cu-Au deposit, located in southeast Heilongjiang Province, is a typical deposit which occurs in the north of Mishan-Dunhua Deep fracture of the Wandashan metallogenic belt. The authors carried out LA-ICP-MS zircon U-Pb dating of main and trace elements in the granite porphyry, and discussed the chronology of the rock mass and the tectonic setting. The results indicate that the ore-related Yuejinshan granite porphyry has a concordia LA-ICP-MS zircon U-Pb age of (109.17 ± 0.91) Ma, which is basically in good consistency with the weighted average age. The Yuejinshan granite porphyry has a geochemical affinity with subduction magmas, characterized by peraluminous nature, enrichment of LILIs (Rb, Ba, La, Nd and Hf), and depletion of <br> HFSE (Nb, Sr, P and Ti). The geochronologic and geochemical characteristics of the Yuejinshan granite porphyry, combined with tectonic evolution of the Wandashan metallogenic belt, suggest that the deposit was formed in a island arc or active continental margin setting and that its formation was probably related to the subduction of the Paleo-Pacific Ocean during the Mesozoic.关键词
黑龙江省/跃进山铜金矿/花岗斑岩/LA-ICP-MS锆石U-Pb年龄/构造意义Key words
Heilongjiang Province/Yuejinshan Cu-Au deposit/granite porphyry/LA-ICP-MS zircon U-Pb dating/tectonic significance分类
天文与地球科学引用本文复制引用
韦延兰,杨言辰,刘娜,韩世炯,王庆双..黑龙江省跃进山铜金矿床花岗斑岩锆石U-Pb定年及地质意义[J].中国地质,2015,(1):169-179,11.基金项目
中国地质调查局地质调查项目（1212011120342，12120113098300）资助。 （）
