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吉林克拉通广泛出露的粗粒黑云长英片麻岩是以英云闪长岩为主的TTG深成侵入体 ,原始岩浆来自幔源物质的部分熔融作用 ,同源岩浆不同演化阶段形成多种岩石类型 (Gnbd、GnblⅠ、GnblⅡ ) ,后经变质构成统一古陆。古陆隆升 ,边缘滑脱和裂解并接受元古宙地层沉积。层间滑动和韧性剪切达上地幔 ,使部分太古宙黑云长英片麻岩被卷进地层 ,幔源物质加入成矿。这使人们打破原层控金矿的认识 ,将整个古陆边缘金矿床统归于构造 -成矿系统 ,依构造动力学特征的不同划分为三类 :离散型陆缘构造 -成矿系统 ,以中型金矿和Fe、Al、P、B为主 ;会聚型陆缘构造 -成矿系统 ,以金矿化和Ni、Cr为主 ;走滑型陆缘构造 -成矿系统 ,以大型金矿和Cu、Pb、Zn为主 ,该系统有助于全面认识构造特征和矿床分布规律 ,为区域成矿预测和勘查提供科学依据。
The extensively exposed coarse-grained black gneiss gneisses in Jilin craton are deep-trenched intrusions of TTG predominantly composed of partial melting of mantle-derived materials and formation of homogeneous magma at different stages of evolution A variety of rock types (Gnbd, Gnbl Ⅰ, Gnbl Ⅱ), after the metamorphic form a unified ancient land. Paleo uplift, marginal ostracism and cracking and acceptance of Proterozoic sediments. The interlaminar slip and ductile shear reach the mantle so that part of the Archean capitan gneiss gneiss is rolled into the formation and the mantle source material is added to the ore. This led people to break down the understanding of the gold deposits in the original strata. The entire margin of the continental margin was classified as a tectono-metallogenic system and classified into three types according to the tectonic dynamics: the discrete continental structure-metallogenic system, Medium-sized gold mines and Fe, Al, P and B dominated; convergent continental margin-metallogenic systems dominated by gold mineralization and mainly Ni and Cr; strike-slip continental marginal structure-metallogenic systems with large gold mines And Cu, Pb and Zn. The system is helpful to fully understand the tectonic characteristics and the distribution of ore deposits, and provide a scientific basis for regional ore-forming prediction and prospecting.