胶东地块在古生代的浮沉

胶东—京畿地块在古生代并非“铁板一块”。中泥盆一早石炭世,裂解再生临津江—烟南冒地槽带;中、晚石炭世,郯庐海湾仲入成“诸城海湾”,并可能有二叠纪沼泽盆地。中生代运动使胶东地块复杂化。

UPLIFT AND SUBSIDENCE OF JIAODONG MASSIF IN PALAEOZOIC

After Caledonian orogeny, Jiaodong massif underwent from stability to activity history. During the period of middle-Devonian to early-Carboniferous, north and northeast China uplifted to form the land, in the north part of the massif, the breaking-up took place reforming the Rimjin-gang miogcosyncline zone. When the miogeosyncline zone migrated from cast in PRK to west in PRC forming "Yan (Yantai) nan miogeosyncline zone" and "Pcnglai Group" (Yannan Group) was scdimented in a specific area-Qixia area. Finally, this area was confined and then was folded and uplifted. After then, Zhucheng-Jiaoxian area in the central part of the massif was subsided to form "zhucheng gulf" in north China during the middle-later Carboniferous period and probably to form marsh coal-forming basin during the Permian period where the blind coalfield may occur. Indo-Sinian movement made Carboniferious and Permian strate folded, accompanied by intrusion of Linglong granitic batholith. During the Yanshan movement, faulting and magmatism was strongly devcloppcd, causing to form Jiaolai fault-depression and making the massif more complicated.