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首页> 外文期刊>International Journal of Earth Sciences >Eventual solution to the problems of gold ore trends localization in the Carlin province (Nevada, USA)
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Eventual solution to the problems of gold ore trends localization in the Carlin province (Nevada, USA)

机译:最终解决卡林省金矿趋势本土化问题(Nevada,USA)

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摘要

Multi-year research on Carlin-type noble-metal mineralization has allowed the determination of deposit distribution trends, as well as the identification of several stratigraphic, geological-structural, and physicochemical conditions for the formation of the deposits. However, empirical conclusions do not fully encompass the results of modern geophysical and seismotomographic investigations. The involvement of the latter in the determination of the formation and distribution characteristics of known trends enables us to acknowledge that the Carlin world-class gold-ore province (Nevada, USA) is situated in the rear zone of the marginal-continental volcanic-plutonic belt with late Mesozoic-Cenozoic magmatism manifestations and linear belts of endogenous deposits of different formational and mineral types, which are diffusely scattered across the area of accretionary orogens. The formation of late Mesozoic-Cenozoic ore-magmatic systems in the province is predetermined by retinues of underslab and overslab asthenospheres that have been positioned as two layers beneath the continental lithosphere. The lower asthenosphere located in the mantle transition zone under the subducted Farallon plate contacted the higher asthenosphere by the upwelling of toroidal and poloidal fluid-energetic flows. Known trends of Carlin-type Au deposits were controlled by two permeable structures of deep-level geodynamics: the sublatitudinal structure of the Mendocino transform-type fault zone (Getchell and Jerritt Canyon trends), which bounds the Farallon plate in the north, and the paleo-spreading center of the East Pacific Rise of a NNW strike (Battle Mountain Eureka, Carlin, and Alligator Ridge trends).
机译:Carlin型贵金属矿化的多年研究允许确定存款分配趋势,以及鉴定沉积地层的几个地层,地质结构和物理化学条件。然而,实证结论并没有完全包含现代地球物理和地震分析调查的结果。后者的参与在确定已知趋势的形成和分配特征方面使我们承认Carlin世界一流的金矿石(内华达州,美国)位于边缘大陆火山 - 勘探物的后区具有晚期中生代 - 新生代岩浆岩浆表现形式和内源性沉积物的线性皮带,其不同的矿物质类型,其散射在膨胀型葡萄球菌面积上。通过在大陆岩石圈下方的两层定位为两层的欠下和过劳的哮喘的重温,全省中生成的中生代宫岩石岩石系统的形成是预先确定的。位于底层法拉蒙板下方的披风过渡区的较低的哮喘圈通过环形和面聚流体充电流量的升值接触了较高的哮喘圈。 Carlin型Au沉积物的已知趋势由深层地球动力学的两个可渗透结构控制:蒙古诺变换型断层区(GetChell和Jerritt Canyon趋势)的副讲解结构,它将北方的法拉利板界定在一起,以及东太平洋地区的古蔓延中心击败了NNW罢工(战斗山Eureka,Carlin和Carlin和鳄鱼岭趋势)。

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