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锆石SHRIMP详细研究表明,招掖金矿带内花岗岩类侵入体形成于中生代2个不同的时期:玲珑型和滦家河型花岗岩形成于160～150Ma(晚诛罗世);郭家岭型花岗闪长岩形成于130～126Ma(早白垩世).3种类型岩体中均含有前寒武纪(>650Ma)和早中生代(200～250Ma)2个时代的继承锆石.前者表明这些花岗岩类为壳源成因,同时还指示该区下伏有3.4Ga(中太古代)的硅铝壳存在;后者的大量出现反映该区受该时期1次重要的构造事件——华北、华南地块碰撞事件的影响.SHRIMP结果还指示本区金矿化发生在126～120Ma之间.
Zircon SHRIMP detailed study shows that the granite intrusions in the Zhaoyuan gold belt were formed in two different Mesozoic periods: exquisite and Luanjiahe granites formed at 160-150 Ma (Late Zhuozuo); Guojialing granite The diorites formed during 130 ~ 126 Ma (Early Cretaceous), and all three types of rocks contain inherited zircons from the Precambrian (> 650 Ma) and Early Mesozoic (200 ~ 250 Ma) ages, indicating that these granites It is also indicated that 3.4Ga (Meso-Archean) Si-Al exists under this area, while the latter shows that the area was affected by one important tectonic event in that period - North China and South China The impact of the block collision event. The SHRIMP result also indicated that gold mineralization in this area occurred between 126 and 120 Ma.