地质与勘探2013，Vol.49Issue(1)：28-38,11.
黑龙江伊春地区早中生代花岗岩成矿作用及成矿能力差异性探讨
Metallogenesis and Metallogenic Differences of the Early Mesozoic Granites in the Yichun Area, Heilongjiang Province
摘要
Abstract
The late Triassic to early Jurassic granites are widely distributed in the Yiehun area, Heilongjiang Province, which are dominated by por-phyaceous monzonitic granite, monzonitic granite porphyry, syenogranite, alkali-feldspar granite and alkali granite. And the discovered iron-plolymetallic deposits and gold deposits related to these rocks are mainly of porphyry, skarn, skarn-hydrothermal, magmatic hydrothermal and epithermal hydrothermal types. The major rock-forming and ore-forming ages are late Triassic to early Jurassic (U-Pb zircon LA-ICPMS age of 191 ~ 225Ma) , and the ore-forming age is slightly later than the metallogenic epoch. This paper studies the major rock types, geologic ages, tectono-magmatic evolution, genetic types of the early Mesozoic granites and mineralization characteristics of different continental-collision stages. We divide the metallogenic series into two metallogenic subseries; the Mo-Pb-Zn-Fe-W-Au(Ag) metallogenic subseries of porphyaceous monzonitic granite-monzonitic granite porphyry of continental collisional-postcollisional structural transposition and the Fe-Mo-Pb-Zn-NbTa metallogenic subseries of syenogranite-alkali-feldspar granite-alkali granite of poslcolli-sional collapse episode. These two metallogenic subseries differ in metallogenic features, i. e. , ore-forming elements, mineralization intensity and types. And these differences are related with granite source areas, the degree of crust-mantle mixture, mixture ratio, granite emplacement depth and metallogenic tectonic background.关键词
早中生代花岗岩/矿床成矿系列/成矿作用/成矿能力差异性/伊春地区Key words
early Mesozoic granites/metallogenic series/metallogenesis/metallogenic difference/Yichun area分类
天文与地球科学引用本文复制引用
李仰春,韩振哲,吴淦国,张达..黑龙江伊春地区早中生代花岗岩成矿作用及成矿能力差异性探讨[J].地质与勘探,2013,49(1):28-38,11.基金项目
中国地质调查局基础地质调查项目(200313000035). （200313000035）
