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系统的地层地球化学资料表明,湘中大乘山区寒武系中统和泥盆系中统棋梓桥组是成矿元素和伴生元素含量较高的层位。在此基础上,除了利用成矿模拟实验证实了在成矿过程中,该区成矿元素有从这些地层中活化迁移出来的可能性外,文中还应用了微量元素,稳定同位素和构造地球化学等方法。找到了成矿元素在这些地层中曾发生过向赋矿部位运移富集的一些直接证据。据此,可以初步认为这两套地层是该区层控铅-锌矿床的主要矿源层。
The systematic geochemical data show that the Cambrian Central Plains and the Devonian Zixi Qizhibiao Formation in the Mahayana Mountains of Central Hunan Province are the strata with higher metallogenic elements and associated elements. On this basis, besides using mineralization simulation experiments, it is confirmed that the ore-forming elements in this area have the possibility of migration from these strata during mineralization process. In addition, the trace elements, stable isotopes and tectono-geochemistry Other methods. Some direct evidence that ore-forming elements have migrated and enriched to the ore-hosting sites in these strata has been found. Accordingly, it can be preliminarily considered that the two sets of strata are the main source beds for stratabound lead-zinc deposits in this area.