【作者】 汪劲草；

【导师】 彭恩生； 孙振家；

【作者基本信息】 中南大学 ， 矿产普查与勘探， 2001， 博士

【摘要】 本文根据当代成矿构造发展的要求，基于构造体系、构造解析等思想与方法，作者提出了成矿构造系列这一新概念，并将其定义为：一定时空域中、同一构造体制下或某一特殊地质作用过程中形成的相互联系的一套成矿构造的总和。按照上述定义，将成矿构造系列划分为十大类型（家族），它们分别是：挤压成矿构造系列、伸展成矿构造系列、走滑成矿构造系列、岩浆成矿构造系列、沉积成矿构造系列、岩溶成矿构造系列、水压成矿构造系列、正（滑）—走（滑）成矿构造系列、挤（压）—走（滑）成矿构造系列及撞击成矿构造系列。每一类型都具有一定的层次，依研究程度的不同可以划分到亚系列和（或）子系列。成矿构造系列结构的建立是成矿构造预测的重要环节。为了便于识别以流体动力作用为主形成的成矿构造，本文又提出了流体动力角砾岩一词，认为它包括爆发角砾岩系列、流化角砾岩系列及水压角砾岩系列，并讨论了岩石的分类与鉴别。为了便于对构造动力与流体动力双重控制的成矿构造进行分类研究，本文又探讨了流变不均一性对水力压裂作用控制的新机制，提出了变形分解作用、水力压裂作用及裂开—愈合作用三位一体的脉型和水压角砾岩型成矿构造形成的构造成因模型。应用上述理论及模型，作者在一些危机矿山的成矿构造研究中取得了非常显著的效果。如：论证了青海锡铁山铅锌矿床的成矿构造属韧性域伸展成矿构造系列，脉状铅锌矿体受控于加里东期变质核杂岩的褶叠层中的大理岩构造透镜体；阐述了湘西沃溪金锑钨矿床的成矿构造属脆—韧性域伸展成矿构造系列，层状金锑钨矿体受控于低角度下滑型顺层脆—韧性剪切带；提出陕西双王金矿的成矿构造属水压成矿构造系列，含金水压角砾岩体是深源富碱含金流体在泥盆系一套热水沉积的富钠质岩系中发生水力压裂作用形成的；认为玲拢—焦家金矿田控制石英脉型和蚀变岩型的成矿构造分属左族走滑—正滑成矿构造系列和正滑—左旋走滑成矿构造系列，两类金矿体的雁列型式、倾向与倾角以及侧伏向与侧伏角皆受上述不同构造体制下的动力学条件制约；厘定湖南江永县银铅锌矿的成矿构造分属岩溶成矿构造系列与岩浆成矿构造系列；发现湖南新化县金矿的成矿构造分属走滑成矿构造系列与伸展成矿构造系列。上述成矿构造系列理论应用的成果已部分得到生产勘探和物探结果的有力支持。更多还原

【Abstract】 Based on the demands of the development of modem metallotectonics, the thoughts and methods of tectonic system and structural analysis, etc., the author has present the new concept of metallotectonic series which is defined as a set of metallotectonicses interrelated together under the same tectonic regine or some particular geologic events in a certain spacetime domain. According to the definition above, metallotectonic series may be divided into ten main types (familes), which are compressional metallotectonic series, extensional metallotectonic series, strike-slip metallotectonic series, magmatic metallotectonic series, sedimentational metallotectonic series, karstic metallotectonic series, hydrofractunng metallotectonic series, normal-strike slip metallotectonic series and compressional-strike slip metallotectonic series respectively. Each type can be divided into sub-series or son-series with the difference of study level.Setting up the texture of metallotectonic series is a very important process for the metallotectonic prognesis. In order to faciliate indentifying metallotectonicses formed mainly by fluid dynamics, the contents of the fluid dynamic breccia, including explosive breccia series, rheonorphic breccia series and hydrofracturing breccia series, are brought forward and their classification and identification are discussed in this paper. In order to make the classification of the metaflotectonicses controlled by both teotonic dynamics and fluid dynamics, this paper discusses how rheid inhomogeneity controlls hydrofracturing, and presents an kind of new mechanism for the formation of vein-type metallotectonics and hydrofracturing breccia-type metallotectonic by deformation partitioning, hydrofractunng and rupture-healing. Through the application of the theories and models mentioned above, some good effects have been attained on the study of the metallotectonicses in some criss mines as follows.i)The metallotectonicses of Xitieshan Pb-Zn deposit in Qinghai Province have been demonstrated to belong to extensional metallotectonic series in ductile domain, and the Pb-Zn ore veins are controlled by the marble tectonic lens in the folding layers of metamorphic core complexes formed in Caledonian.ii)The metallotectonicses of Woxi Au-Sb-W deposit in western Hunan Province have been discovered to belong to extensional metallotectonic series in brittle-ductile domain, andthe bedded Au-Sb-W ore-veins are controlled by a bedded brittle-ductile shear zone with lowangle and down-slip.iii)The metallotectonicses of Shuangwang gold deposit in Shanxi Province have been suggested to belong to hydrofracturing metallotectonic series, and the formation of the goldbearing hydrofracturing breccia bodies are caused by hydrofractunng of the deep-seated fluids with gold-bearing and rich-alkali in the rich sodium rocks of Devonian formed in hot-water sedimentation.iv)The metallotectonicses, which controll quartz-vein type and alteration-rock type in Linglong-Jiaojia gold field, have been recongnized to belong to left-lateral strike梞orrnal slip metallotectonic series and normal ?left-lateral strike slip metallotectonic series respectively, and their en echelon type, dip and dip-angle, pitch and pitch-angle are confined by the condiction of dynamics under the different tectonic regime.v)The metallotectonicses of Jiangyong Ag-Pb-Zn deposit in Hunan Province have been identified to belong to karstic metallotectonic series and magmatic metallotectonic series respectively.vi)The metallotectonicses of Xinhua gold deposit in Hunan Province have been found to belong to strike-slip metallotectonic series and extensional metallotectonic series respectively.The above progresses obtained through the application of the theory of metallotectonic series have been supported partly by the results of production exploration and geophysical prospection.更多还原