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胶东招掖玲珑花岗岩锆石ＳＨＲＩＭＰＵ－Ｐｂ年龄结果表明，玲珑花岗岩形成于中生代燕山期（岩浆锆石年龄为１５０～１６０Ｍａ之间），岩体中产有大量的中生代印支期继承锆石（２００～２５０Ｍａ）及少数前寒武纪继承锆石。大量印支期锆石的存在说明玲珑花岗岩是壳源成因的，其源岩主要是中酸性岩石，推测可能是印支期华北华南两地块碰撞形成的造山花岗岩，这否定了长期以来人们普遍接受的玲珑花岗岩主是胶东群变质岩重熔或交代－重熔的认识。
The results of SHRIMPU-Pb dating show that the extinct granites were formed in the Mesozoic Yanshanian period (the ages of magmatic zircons are between 150 and 160 Ma). There are a large number of Mesozoic Indosinian inherited zircons (200 ~ 250Ma) and a handful of Precambrian inheritance of zircon. The existence of a large number of Indosinian zircons indicates that Linglong granite is the origin of the crust, and the source rocks are mainly acidic rocks, suggesting that they may be orogenic granites collided by the two South China blocks in North China during the Indosinian. This negates the long history of widespread occurrence The accepted exquisite granite master is Jiaodong Group metamorphic rocks remelting or replacement - remelting understanding.