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湘南中泥盆世棋梓桥期为一碳酸盐台地,早期为开阔海台地,晚期转为局限—半局限海台地。可细分为潮下浅水、潮坪、泻湖、生物礁(滩)等几个亚相。铅锌矿主要赋存在潮坪—泻湖白云岩相中。棋梓桥组下段的岩石含铅锌较高,含铅一般40—l00ppM,最高达741ppM。铅同位素模式年龄为560、380、152百万年。δs~34‰变化较宽,平均值偏离零值线较远,反映成矿物质主要来自沉积地层。成矿机理可分为两个阶段:一是沉积—成岩期铅锌初步聚积阶段;二是成岩后改造叠加成矿阶段。该类铅锌矿是属于受一定地层、沉积相控制、成矿物质多来源、成矿作用多阶段的层控矿床。
The Middle Devonian in southern Hunan Qizhi period of a carbonate platform, the early open sea platform, late to the limited - semi-limited sea platform. Can be subdivided into tidal shallow water, tidal flat, lagoons, bio reef (beach) and several subphases. Lead-zinc deposits mainly occur in tidal flat - lagoon dolomite facies. The lower part of the Qizziqiao Formation contains higher levels of lead and zinc, with a typical lead content of 40-l00ppM and a maximum of 741ppM. Lead isotope patterns are 560, 380, 152 million years old. δs ~ 34 ‰ wide changes, the average deviation from the zero line farther, reflecting the main metallogenic material from the sedimentary strata. The ore-forming mechanism can be divided into two stages: one is the initial accumulation stage of lead and zinc in the sedimentary-diagenetic stage; the other is the post-diagenesis transformation and superimposed mineralization stage. This type of lead-zinc mine belongs to stratabound ore deposit controlled by certain strata and sedimentary facies, multiple sources of ore-forming materials and multi-stage mineralization.