毛德宝. 国外有关沉积岩中金矿床的成因模式[J]. 地质与资源, 1993, 2(3): 233-241. DOI: 10.13686/j.cnki.dzyzy.1993.03.008
    引用本文: 毛德宝. 国外有关沉积岩中金矿床的成因模式[J]. 地质与资源, 1993, 2(3): 233-241. DOI: 10.13686/j.cnki.dzyzy.1993.03.008
    Mao Debao. RECENT STUDIES ON GENETIC MODEL OF SEDIMENTARY ROCK-HOSTED GOLD DEPOSITS ABROAD[J]. Geology and Resources, 1993, 2(3): 233-241. DOI: 10.13686/j.cnki.dzyzy.1993.03.008
    Citation: Mao Debao. RECENT STUDIES ON GENETIC MODEL OF SEDIMENTARY ROCK-HOSTED GOLD DEPOSITS ABROAD[J]. Geology and Resources, 1993, 2(3): 233-241. DOI: 10.13686/j.cnki.dzyzy.1993.03.008

    国外有关沉积岩中金矿床的成因模式

    RECENT STUDIES ON GENETIC MODEL OF SEDIMENTARY ROCK-HOSTED GOLD DEPOSITS ABROAD

    • 摘要: 本文确认国外沉积岩中金矿床成因模式包括a.成矿物质来源:主要有同生喷气沉积作用,即海底热泉或海底热液环流作用,赋矿围岩沉积岩、沉积变质岩(主要为黑色板岩);上-下地壳;岩浆热液。b.控矿条件:断裂控矿(主要为冲断层的上盘);温-压条件,即变质作用退化阶段温-压梯度减小滞后情况下。c.矿质迁移沉淀:含矿流体多以氯和硫氢络合物形式搬运;成矿流体沉淀主要受控于温度、压力、pH、Eh、水/岩交换作用等。d.矿床形成的大地构造环境主要为:早古生代、晚中生代被动大陆边缘的大陆架和浅海域;聚敛性板块边缘部位;大陆拉张构造或裂谷体系。

       

      Abstract: The following contents of genetic model of sedimentary rock-hosted gold deposition recognized abroad are concerned in this paper; 1) source of ore-forming materials; mainly from syngenetic exhalation, sedimentary rocks, sedimentometamorphic rocks, upper-lower crust and magmatic thermal solution; 2) controlling conditions; faults (mainly the upper block of thrust), temperature-pressure range; 3) movement and deposition of ore-forming materials:moving mostly as Cl-and HS- complex compound and their precipitation mainly controlled by temperature, pressure, pH and Eh values and waterlrock exchange; 4) tectonic settings:early paleoxoic and late Mesoxoic continental shelf and shallow sea on passive margin. convergent plate margin. continentad extensional structures or rifz svstems.

       

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