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贵州南部微细粒浸染型金矿位于扬子板块西南缘。其主要赋矿层位是二叠系—三叠系。容矿岩石为粘土岩、粉砂岩和不纯的碳酸盐岩。金矿床 (点 )主要分布在半局限台地相与台地边缘浅滩相鲕粒灰岩的过渡带、孤立台地边缘和盆地相浊积岩。控矿构造为背斜轴部及其倾伏端等构造应力集中的地段、层间及层内断裂或岩溶不整合面 ,以及与背斜相伴生、共生的断裂构造。成矿热液是沉积、成岩期中封闭的同生水 (热卤水 )或石油水。沉积作用阶段 ,为初始矿源岩形成 ;成岩作用阶段 ,像汞、锑、砷、金等活泼或较活泼的元素在压实作用和温度升高条件下 ,随岩石的水体一起排出而形成流体 ;构造作用阶段 ,形成背斜、断裂等容矿空间 ,改变了压力平衡条件 ,促使成矿流体运移圈闭 ;表生风化剥蚀作用阶段 ,圈闭构造受到风化剥蚀而导致含矿流体发生物理、化学变化 ,或其逸出地表 ,使矿质沉淀、聚集而成矿。
The fine-grained disseminated gold mine in southern Guizhou is located in the southwestern margin of the Yangtze plate. The main ore deposit is Permian - Triassic. The ore-hosting rocks are clay rock, siltstone and impure carbonate rock. The gold deposits (spots) are mainly distributed in the transition zone between the semi-confined platform facies and the marginal shoal facies oolitic limestone on the platform margin, the isolated platform margin and the basin-phase turbidite. The ore-controlling structures are sections of structural stress concentration such as anticlinal axes and dip ends, interlaminar and intra-layer faults or karst unconformities, and fault structures associated with anticlines and symbioses. Mineralization hydrothermal fluids are sedimentary, diagenetic closed seawater (hot brine) or petroleum water. During the diagenesis stage, active or active elements such as mercury, antimony, arsenic, gold, etc. are expelled together with the rock water under the conditions of compaction and temperature increase to form a fluid. During the epoch weathering and denudation, the trap structure was subjected to weathering and denudation, which led to the occurrence of ore-bearing fluids, which led to the occurrence of ore- Chemical changes, or its escape from the surface, the mineral precipitation, aggregation and mineralization.