荣成超单元的基本特征

笔者于１９８８－１９９２年参加１：２０万海阳、潮里、文登和威海四幅的区调工作。成果表明：广泛分布于胶东东部，即玉林店—午极、威海及荣成以南一带前人划归胶东群地层的一套片麻岩，实为变质变形花岗质侵入岩。由早到晚可划分为大时家、腾家、威海、御驾山和邱家五个单元，归并为荣成超单元。这一进展使得该区地质图面貌发生了重大改观。

BASIC FEATURES OF RONG CHENG SUPERUNIT

A regional geological survey(scale 1:200000) has been carried out in eastern Jiaodongpeninsula during 1988 to 1 990. The results indicate that the widespread gneisses originall ascribedto the Jiaodong Group are in fact metamorphosed and deformed intrusive rocks which are nowdivided into five units from early to late,i.e. the Dashijia,Tengjia, Weihai , Yujiashan and Qioujiaunits,and are grouped together as the Yongcheng superunit,It is suggested that the superunitformed by remelting of the Jingshan Group , J...