西北地质
西北地質
서북지질
NORTHWESTERN GEOLOGY
2014年
3期
62-69
,共8页
王伟%刘继顺%何美香%刘文毅
王偉%劉繼順%何美香%劉文毅
왕위%류계순%하미향%류문의
金矿%拆离-变质核杂岩构造%构造控矿%豫西
金礦%拆離-變質覈雜巖構造%構造控礦%豫西
금광%탁리-변질핵잡암구조%구조공광%예서
gold deposit%detachment-metamorphic core complexes%structural ore-control%western Henan
豫西地区是国家重点金多金属成矿区带,成矿地质条件优越,区内金及多金属矿类型多样。通过对研究区地质特征及成矿地质条件的分析,得出区内金及多金属矿矿床形成受多重因素控制,包括地层、构造以及岩浆岩因素,并且在这些因素中,构造控矿占主导。在此基础上,将研究区内金矿矿床类型分为构造蚀变岩型金矿床、构造破碎带型金矿床、斑岩型金矿床以及爆破角砾岩筒型金矿床4种类型,并对每一种类型选取1个典型的矿床进行具体讲述。依据对研究区成矿地质特征以及5种构造控矿类型的叙述,论述了拆离-变质核杂岩构造对金矿成矿的构造控矿作用和构造控矿规律,并根据该区金矿矿床成矿规律,提出选取找矿靶区的8项依据,最后优选出7处找矿有利靶区。
豫西地區是國傢重點金多金屬成礦區帶,成礦地質條件優越,區內金及多金屬礦類型多樣。通過對研究區地質特徵及成礦地質條件的分析,得齣區內金及多金屬礦礦床形成受多重因素控製,包括地層、構造以及巖漿巖因素,併且在這些因素中,構造控礦佔主導。在此基礎上,將研究區內金礦礦床類型分為構造蝕變巖型金礦床、構造破碎帶型金礦床、斑巖型金礦床以及爆破角礫巖筒型金礦床4種類型,併對每一種類型選取1箇典型的礦床進行具體講述。依據對研究區成礦地質特徵以及5種構造控礦類型的敘述,論述瞭拆離-變質覈雜巖構造對金礦成礦的構造控礦作用和構造控礦規律,併根據該區金礦礦床成礦規律,提齣選取找礦靶區的8項依據,最後優選齣7處找礦有利靶區。
예서지구시국가중점금다금속성광구대,성광지질조건우월,구내금급다금속광류형다양。통과대연구구지질특정급성광지질조건적분석,득출구내금급다금속광광상형성수다중인소공제,포괄지층、구조이급암장암인소,병차재저사인소중,구조공광점주도。재차기출상,장연구구내금광광상류형분위구조식변암형금광상、구조파쇄대형금광상、반암형금광상이급폭파각력암통형금광상4충류형,병대매일충류형선취1개전형적광상진행구체강술。의거대연구구성광지질특정이급5충구조공광류형적서술,논술료탁리-변질핵잡암구조대금광성광적구조공광작용화구조공광규률,병근거해구금광광상성광규률,제출선취조광파구적8항의거,최후우선출7처조광유리파구。
The west of Henan province is an important gold polymetallic mineralization belt of China.The region has favorable ore-forming geological conditions and various types of gold polymetallic deposit. According to the analysis of geological characteristics and ore-forming geological conditions in this area,gold polymetallic deposits in the west of Henan province are controlled by multiple factors,mainly including strata,structures and magmatic rocks,among which structures are the dominant factors.On this basis,gold deposits inside researching area can be divided into altered fracture zone type,altered rock zone type,porphyry type,explosion breccia type.A typical ore deposit is selected from each type for analysis.According to the geologic characteristics of the gold deposits and five types of structural ore-control,this paper discussed the influence of detachment-metamorphic core complexes on structural ore-control and metallogenic regularity of the gold deposit mineralization. According to the mineralization regulations of gold deposits in researching area, eight indicators are proposed to select prospecting targets.Then,seven favorable prospecting targets are optimally selected.