本文選題：巖漿作用 + 成礦作用��； 參考：《礦物巖石地球化學(xué)通報(bào)》2017年04期

【摘要】：課題擬重點(diǎn)開(kāi)展華北北緣及其鄰區(qū)燕山期巖漿-成礦作用的時(shí)空分布規(guī)律、成巖-成礦性質(zhì)及形成背景研究。通過(guò)對(duì)比不同時(shí)空背景下巖漿-成礦作用的類型,查找典型構(gòu)造帶上巖漿的巖石化學(xué)及同位素組成的時(shí)空演變規(guī)律,明確古鄂霍茨克洋和太平洋俯沖體系對(duì)區(qū)內(nèi)巖漿作用的制約,限定古洋殼向華北地塊俯沖、轉(zhuǎn)換的時(shí)限。分析巖漿-金屬成礦作用區(qū)巖漿產(chǎn)生的物理化學(xué)條件、運(yùn)移演化過(guò)程、源區(qū)性質(zhì)及記錄的殼幔相互作用,并在剖析典型資源礦產(chǎn)聚集區(qū)燕山期成礦類型及成礦機(jī)理基礎(chǔ)上,探討巖漿性質(zhì)、成巖過(guò)程與成礦類型、成礦作用的關(guān)系,建立巖漿-成礦作用與古洋殼俯沖疊合的內(nèi)在聯(lián)系,構(gòu)建成巖-成礦作用與塊體俯沖拼合的動(dòng)力學(xué)過(guò)程。同時(shí),將深源巖石包體示蹤和地球物理資料有機(jī)結(jié)合,開(kāi)展不同地區(qū)深部巖石圈組成、結(jié)構(gòu),以及深部過(guò)程與淺部響應(yīng)的綜合研究。
[Abstract]:This paper focuses on the temporal and spatial distribution, diagenetic and metallogenic properties and background of the Yanshanian magmatic metallogeny in the northern margin of North China and its adjacent areas. By comparing the types of magmatic metallogeny in different space-time backgrounds, the authors find out the space-time evolution law of petrochemistry and isotopic composition of magma in typical tectonic belt. The constraints of Paleo-Okhotsk and Pacific subduction systems on magmatism in the region are defined, and the time limit for the subduction and transformation of the paleo-oceanic crust to the North China block is defined. The physical and chemical conditions, migration and evolution process, source property and recorded crust-mantle interaction of magma in the magma metallogenic zone are analyzed. On the basis of analyzing the metallogenic types and metallogenic mechanism of Yanshanian epoch in the typical resource and mineral accumulation area, The relationship between magmatic property, diagenetic process and metallogenic type, metallogeny is discussed, the internal relation between magma and mineralization and paleoceanic crust subduction is established, and the dynamic process of diagenesis and mineralization is constructed. At the same time, a comprehensive study on the composition, structure, deep process and shallow response of the deep lithosphere in different regions is carried out by combining the deep source rock inclusion tracer and geophysical data.
【作者單位】： 中國(guó)地質(zhì)大學(xué)地球科學(xué)學(xué)院地質(zhì)過(guò)程與礦產(chǎn)資源國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院廣州地球化學(xué)研究所礦物學(xué)與成礦學(xué)地球化學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院廣州地球化學(xué)研究所同位素地球化學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;吉林大學(xué)地球科學(xué)學(xué)院;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃“燕山期重大地質(zhì)事件的深部過(guò)程與資源效應(yīng)”子課題(2016YFC0600403)資助
【分類號(hào)】：P588.11;P612

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本文編號(hào)：2007498