南岭钨锡多金属矿床成矿系列与构造岩浆侵位接触构造动力成矿专属
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国家自然科学基金项目(40572061)资助。


Ore-forming specialty of the tectono-magmatic zone in Nanling region and its emplacement dynamics for metallogenic series of W-Sn polymetallic deposits
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    摘要:

    提要:南岭构造岩浆带属南华大花岗岩省的主体。它是受地球纬向和经向构造在陆内交切形成的陆壳根入地幔及滨西古太平洋洋壳消减的异曲同工效应构建的多源大规模构造岩浆岩带。多源构造岩浆的形成、岩浆侵入表壳的岩浆构造动力及其侵位于围岩形成的侵入接触构造体系与一定构造岩浆、一定成矿系列的成岩成矿属性密切相关。笔者为从构造岩浆成岩及岩浆侵位构造动力形成的侵位接触构造体系普适性模式,提出强动力形成的正-近接触带构造样式可形成香花岭矿床式-柿竹园矿床式-芙蓉矿床式-黄沙坪矿床式的湘南成矿亚系列;弱主动力形成的正-近接触带构造样式可形成大吉山矿床式-西华山矿床式的赣南成矿亚系列;中强主动力形成的近-远接触构造带倒卧背斜构造样式可形成拉么矿床式-大厂矿床式的桂西北成矿亚系列。最后还提出侵入接触构造体系形成的不同构造样式仅是有利控矿场地的准备,尚需进一步研究侵位岩体的热效应与金属元素淀积的化学动力作用方能更深化认识成矿的强度和有效性。

    Abstract:

    Abstract: The Nanling tectono-magmatic zone constitutes the primary body of the great South China granite province. As a multiple-source large-sized tectono-magmatic zone in the great granite province,it was probably formed by the same result achieved from the mantle-rooted continental crust in the intra-continent and the ocean crust of Izanagi (Ancient Pacific Ocean) subducted along the continental margin. The formation of multiple tectono-magma and the tectono-dynamic effects of the emplacement as well as their contact structural systems are closely related to the specialty of a certain tectonic magma and an established metallogenic series. Based on the universal model for the tectonic dynamic effect of magmatic emplacement, this paper puts forward the opinion that the Xiangnan sub-metallogenic series of Xianghualing-Shizhuyuan- Furong-Huangshaping mineral deposits might have been formed on the structural pattern of the ortho-proximal contact zone by strong initiative dynamic effect, the Gannan sub-metallogenic series of Dajishan-Xihuashan mineral deposits might have resulted from the structural pattern of the ortho-proximal contact zone by weak initiative dynamic effect, and the Guixibei sub-metallogenic series of Lamo-Dachang mineral deposits were likely formed on the structural pattern of reversed lying anticline structural pattern on the proximal-distant contact zone by fairly strong initiative dynamic effect. It is pointed out that the magmatic emplacement contact system is only a prerequisite for ore-forming space, and that only through detailed studies of the cooling rate and heating effect of magmatic bodies and geochemical kinetic effects of ore-forming metals can the metallogenic intensity and availability be deeply understood.

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裴荣富 王永磊 王浩琳. 南岭钨锡多金属矿床成矿系列与构造岩浆侵位接触构造动力成矿专属[J]. 中国地质, 2009, 36(3): 483-489.
PEI Rong-fu, WANG Yong-lei, WANG Hao-lin. Ore-forming specialty of the tectono-magmatic zone in Nanling region and its emplacement dynamics for metallogenic series of W-Sn polymetallic deposits[J]. Geology in China, 2009, 36(3): 483-489(in Chinese with English abstract).

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  • 在线发布日期: 2013-03-18
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