中文摘要：

基于野外观察、断层滑动矢量分析和古构造应力场反演，研究了胶北隆起区两条主要断裂带（招远-平度断裂带和牟平-即墨断裂带北段）的活动历史及古构造应力状态，结合火成岩^40Ar-^39Ar、SHRIMP和LAICPMS锆石U-Pb测年结果，确定了该区晚中生代主要构造-热事件和构造应力体制的转换时限。结果表明，晚侏罗世一早白垩世时期胶北隆起区经历了从地壳挤压为主到引张伸展为主的运动学转变历史。晚侏罗世构造幕式挤压导致地壳增厚和玲珑型花岗岩体侵位，岩浆活动年龄指示了两期构造-热事件：早期集中在160～150Ma，晚期在147-142Ma。胶北隆起区NNE向断裂带发生低角度逆冲和左旋走滑活动，挤压应力方向为NW-SE。早白垩世中晚期，伸展构造应力体制占据主导地位，引张应力方向为NW—SE至NWW—SEE。这期伸展作用不仅导致了胶莱断陷盆地的形成，同时诱发了I-A型花岗岩侵位（年龄集中在135～106Ma）和中酸性火山喷发。在早白垩世莱阳群下部地层中发现的玄武质火山岩夹层，进行了角闪石^40Ar-^39Ar和SHRIMP锆石U—Pb测年，结果指示研究区早白垩世伸展构造应力体制起始于130Ma。最后讨论了晚中生代从挤压到伸展构造应力体制转变的区域动力学背景。

英文摘要：

Late Mesozoic kinematics history of the two major fault zones （the Zhaoyuan-Pingdu and the Muping- Jimo ones）in the Jiaobei uplift has been studied based on field observations,fault kinematics analysis and paleostress inversion, ombined with ^40Ar-^39Ar, SHRIMP and LA-ICPMS zircon U-Pb isotopic dating of volcanic and granitic rocks from this area, timing of main tectono-magmatic events and transformation of the tectonic stress regimes have been determined. The results show that the Jiaobei uplift experienced the transformation of tectonic stress regime from Late Jurassic compression to Early Cretaceous extension. Late Jurassic NW-SE compression resulted in thickening of the crust and emplacement of crustal-derived S-type granites;their intrusive ages indicate two tectonic-thermal events：one occurring in 160- 150 Ma, and the other in 147-142 Ma. The Jiaobei uplift is characterized by an NNE fault zone with low-angle reverse thrusting and left-lateral strike-slip faulting . During the Early Cretaceous, tectonic stress regime was dominated by an NW-SE to NWW-SEE extension. This extension not only caused the formation of the Jiaolai basin, but also triggered eruption of I-A type granite in 135 - 106 Ma and intermediate to acid volcanic rocks. ^40Ar-^39Ar analysis for hornblend and SHRIMP U-Pb dating for zircon collected from the intercalated basaltic volcanic rock, which was found in the lower Lianyang Formation of Early Cretaceous, indicate that the Early Cretaceous tectonic stress extension initiated at ca. 130 Ma. At the last, the study discusses the regional geodynamic settings in which tectonic regime transformed from compression to extension during the Middle to Late Mesozoic.