燕辽地区位于华北地台北缘东段,是我国著名的中生代火山热液型铀、金、多金属矿床成矿区。此区大陆壳历经了太古代克拉通、元古代裂陷地槽、古生代优地槽和中生代大陆伸展裂陷火山盆地等四个演化期。伴随大陆壳演化过程,发生了一次铀、二次金、三次多金属成矿元素的预富集作用。铀、金、多金属矿床的成矿作用受统一的晚中生代大陆裂 Yanliao area is located in the eastern section of the northern margin of North China platform, is the famous Mesozoic volcanic hydrothermal uranium, gold and polymetallic deposits in China. The continental crust in this area has undergone four evolutionary stages, that is, the Archean cratonic, the Proterozoic rifted troughs, the Paleozoic dikes and the Mesozoic extensional rifting volcanic basins. With the evolution of the continental crust, a pre-enrichment of uranium, secondary gold and tertiary metallogenic elements took place. The metallogenesis of uranium, gold and polymetallic deposits is controlled by a unified late Mesozoic continental rift