【摘要】 胶南地区的变质杂岩主要由中、晚元古代的变质深成岩组成。按照同源岩浆演化理论，这些深成岩可划归四个超单元：①海阳所超单元，由基性岩－中性岩－酸性岩构成一个较完整的岩浆演化序列，为中元古代幔源深成岩类，形成于洋内裂谷环境，属非造山岩浆岩类；②荣成超单元，由二长花岗岩类构成，为晚元古代壳源S型花岗岩类，形成于碰撞造山阶段，属同造山岩浆岩类；③铁山超单元，由石英正长岩－正长花岗岩组成，为晚元古代幔源分异型（A型）花岗岩类，形成于陆内张裂环境；④月季山超单元，由二长岩－二长花岗岩组成，为晚元古代壳幔混合源（Ⅰ型）花岗岩类，形成于板块碰撞后期，亦属同造山花岗岩类。胶南地区前寒武纪地壳演化进程为：在早元古代陆缘海的基础上，中元古代该区地壳拉张形成裂谷，海阳所超单元沿裂谷侵位；晚元古代地壳由拉张环境转变为挤压环境，裂谷闭合发生板块碰撞造山作用，伴随产生大量同造山岩浆岩类。其中板块碰撞引起的部分融熔作用形成荣成超单元，板块碰撞造成的局部拉张环境使幔源分异的A型花岗岩类铁山超单元定位，稍后壳幔混合岩浆沿造山作用产生的推覆构造空腔定位形成月季山超单元。更多还原

【Abstract】 The metamorphic complexes in the Jiaonan area are mainly Meso-proterozoic and Neo -proterozoic metamorphosed intrusive rocks. According to the consanguineous magmatic evolution theory, these intrusive rocks can be divided into four superunits: ①Haiyangsuo superunit which consists of the Laohuangshan,Dazhangba and Xiaotun units and has formed a nearly complete magmatic evolutionary series from basic-intermediate-acid rocks; they are mainly the Meso-Proterozoic intrusive rocks of mantle source formed in the oceanic rift environment, belonging to the anorogenic magmatic rocks, while the Xiaotun superunit shows the characteristics of oceanic plagiogranite; ②Rongcheng superunit which consists of the Weihai, Baoshan, Yujiashan and Miaoshan units; they are all monzogranitic rocks, belonging to the Neo-proterozoic granites of crust source (S type),and have been formed in the plate collision stage, belonging to synorogenic magmatic rocks; ③Tieshan superunit which consists of Zhengjiamiao and Qianshigou units; they are quartz syenite-orthoclase granite, belonging to the Neo-proterozoic A type granites of mantle differentiation and have been formed in intracontinental tension environment; ④Yuejishan superunit which consists of Shihuiyao, Woluo, Xiaohexi and Houshigou units, they are monzonite-monzogranite, belonging to the Neo-proterozoic synorogenic granites (Ⅰ type) of crust-mantle mixed source,and has been formed in the late stage of plate collision. The Precambrian crust evolution history is as follows: on the basis of Palaeo proeterozoic pericontinental sea, a rift was formed here by crust extension in the Meso proterozoic, and the Haiyangsuo superunit was intruded along the rift; during Neo proterozoic,the crust changed from extensional environment to compressional environment.As the rift closed, plate collision orogenism occurred, which was accompanied by a large amount of synorogenic granites. The plate collision caused partial melting,which formed the Rongcheng superunit and the local extensional environment caused by plate collision resulted the emplacement of the mantle differential A type granites--the Tieshan superunit. Later, crust-mantle mixed magma was emplaced along the nappe cavity caused by orogeny and the yuejishan superunit was thus formed.更多还原