摘要
本文针对黔东南天柱-锦屏-黎平地区浅变质岩系中的金矿,进行了金矿成矿单元划分及其控矿因素的讨论。其中,前人已经进行了高级别金矿成矿单元及其控制因素的研究工作,而更低级别的成矿单元尚无系统划分。为此,本文通过野外调查及综合研究,首次进行了金矿带及矿田的划分,并对其控矿因素做了系统分析。所划分的金矿带属于Ⅳ级成矿带之下的成矿亚带,一般以加里东期北东向褶皱-断裂构造为主要控矿因素,以东西向深部断裂及隐伏岩体为次要控矿要素,但个别矿带以东西向构造与北东向背斜构造的交汇部位为主要控矿因素。所划分的金矿田多数受加里东期北东向复背斜及其次级(复)背斜的控制,部分受大型复背斜两翼逆断层的断夹块控制,还有部分还受东西向基底断裂、隐伏岩体的控制。
For the gold deposit in the metamorphic rock series of Tianzhu - Jinping - Liping area in south- east Guizhou, the metallogenic unit division and its ore -control factors are discussed. The metallogenic unit division and its ore - control factors of high - grade gold deposit has been studied, but the low - grade gold de- posit is still not divided. Therefore, by field investigation and comprehensible study, the division of all gold belt and ore field are divided the first time, the divided gold belt is a sub - metallogenic belt of class IV, NE fold - fracture structure of Caledonian usually is the main ore - control factor, EW deep fracture and concealed terrain is the secondary ore - control factor, but the main ore - control factor of some belt is the intersection zone of EW structure and NE anticline. Most of the divided gold field are controlled by NE anticlinorium and its secondary anticlinorium in Caledonian, some is Controlled by faulted block of both sides reverse fault of big anticlinorium, and some is controlled by EW fundamental fault and concealed terrain.
出处
《贵州地质》
2012年第4期241-248,共8页
Guizhou Geology
基金
贵州省2010年度公益性
基础性地质科研项目(项目序号5)"黔东南地区金矿成矿规律及找矿靶区研究(2010-2012)"
贵州省优秀科技教育人才省长专项资金项目(黔省专合字([2009]70号)"黔东南天锦黎地区剪切带构造与找金方向研究"
关键词
金矿
矿田
矿带
成矿单元
控矿因素
黔东南
gold deposit
ore field
ore belt
metallogenic unit
ore -control factor
southeast Guizhou
