花岗岩的成岩和成矿物质来源一直是地质学争论的问题。我们的研究表明,南岭地区中生代花岗岩的成岩成矿物质,可能主要来自卷入熔融(重熔)的原地地层或岩石。图1a中的岩体均为燕山早期黑云母花岗岩,其“侵入”的最新地层为上侏罗统。区内的前白垩纪基底地层大体可分为前古生界、下古生界、上古生界和中生界四个地层区。从图1a可见,产于下古生界地层区的花岗岩有较高的K2O含量,其Kn The granite diagenesis and ore-forming material sources have always been a matter of debate in geology. Our study shows that the diagenetic and ore-forming materials of the Mesozoic granites in the Nanling area may come mainly from the in situ stratum or rock involved in melting (remelting). The rock mass in Fig. 1a is all of the early Yanshan biotite granites, and the latest “intrusion” strata are Upper Jurassic. The former Cretaceous basement strata in the area can be roughly divided into four pre-Paleozoic, Lower Paleozoic, Upper Paleozoic and Mesozoic strata. As can be seen from Figure 1a, the granites produced in the Lower Paleozoic stratigraphic zone have higher K2O content,