鲁东前寒武纪岩石地层清理意见

SUGGESTIONS ON THE STRATIGRAPHIC DIVISION AND CORRELATION ON THE PRECAMBRIAN ROCKS IN THE EASTERN SHANDONG REGION

摘要:

厘定后的鲁东前寒武纪地层分区以王台－五莲为界，分为胶北地层小区和胶南地层小区。胶北地层小区层（岩）序为：晚太古代胶东岩群、早元古代荆山群、粉子山群、芝罘群，震旦纪蓬莱群。胶南地层小区层（岩）序为：晚太古代大山沟岩组，早元古代胶南岩群，震旦系朋河石组。对原胶南群作了重新厘定：原甄家沟组因其岩石属变形变质的二长花岗岩而被废弃；大山沟组绝大部分为变形变质二长花岗岩体，而仅将原划大山沟组一段的部分斜长角闪岩和黑云变粒岩厘定为大山沟岩组，隶属晚大古代；原划邱官庄组底部变质含砾砂岩新建为朋河石组；邱官在岩组和于象岭岩组合称为新义的胶南岩群，荆山群与粉子山群和胶南宕群可能属同时异相沉积变质产物。五莲群与粉子山群为同物异名因而废弃。

Abstract:

The eastern Shandong Precambrian stratigraphic region has been divided into theJiaobei stratigraphic subregion and the Jiaonan stratigraphic subregion; they are boundedby the wang-tai-wulian line. The stratigraphic sequence of the Jiaobei subregion in-cludes the upper Archaean Jiaodong group,the lower Proterozoic Jingshan, Fenzishanand Zhifu groups and the Sinian Penglai group.The stratigraphic sequence of the Jiaonansubregion includes the upper Archaean Dashangou lithologic formation,the lower Pro-terozoi...