南岭燕山期构造-岩浆热事件与锡田锡钨成矿

燕山期发生的与岩石圈减薄和构造转折有关的壳幔相互作用,引起了地球深部能量和物质向浅部的大规模传输,造成了南岭中生代构造-岩浆热事件,从而为成矿作用提供了必需的热、流体、挥发组分和成矿元素,形成了巨量金属堆积的独特地质背景。处于南岭多金属成矿带中段北缘的锡田锡钨成矿区即是在此热事件作用下,形成了云英岩型、似伟晶岩壳型、夕卡岩型、构造蚀变岩型、石英脉型锡、钨多金属矿床。

THE RELATIONSHIP BETWEEN YANSHANIAN TECTONIC-MAGMATIC THERMAL EVENT AND TIN,TUNGSTEN MINERALIZATION AT XITIAN,NANLING AREA

During Yanshanian Period occurred lithospheric thinning and tectonic variation that led to crust-mantle interaction and transfer of energy and material at depth of the earth to the shallow resulting in the Mesozoic tectonic - magmatic-thermal event in Nanling metallogenic belt,. The event provided heat, fluid, volatile components and ore-forming elements and a unique geological background with huge voluminous metal accumulation. Under the background greisen, pegmatitic shell, skarn, altered cataclastic rock and quartz vein types of Sn-W polymetallic deposits are formed in Xitian Sn-W ore district at the north margin of the middle of Nanling polymetallic metallogenic belt