摘要
The north Sulu ultra-high pressure(UHP) metamorphic belt which is located at the eastern Muping-Jimo fault in eastern Shandong Peninsula is mainly characterized by Neoproterozoic bimodal igneous rocks.And its assemblages include a large number of granitic gneiss and a small amount of ultra basic/basic metamorphic rocks and metasedimentary rocks.The previous research of geochemical,zircon U-Pb,Lu-Hf isotope data revealed the geologic succession of the north Sulu UHP terrane.The Neoarchean-Paleoproterozoic ancient crust was remained and its initial crust evolution might start from Neoarchean or even earlier,then it undergone a series of magma-volcano-metamorphic events during 1.8-2.2 Ga.The bimodal magmatism,which caused by the rifting of the Rodinia Supercontinent at mid-Neoproterozoic(0.7-0.8 Ga) reworked the ancient and juvenile crust.As the same to the Sulu-Dabie orogen terrane,some characteristics of the Precambrian basement of the north Sulu UHP terrane are corresponding to Yangtze Block,and its northwestern boundary to the North China Block may be located along the Wulian-Yantai fault.