LATE MESOZOIC DEPOSITS AND THEIR CHARACTERISTICS OF RIQINGWEI BASIN IN THE NEARSHORE AREA OF EASTERN SHANDONG

Late Mesozoic deep-water sediments occur widely in the area off Eastern Shandong Peninsula, which have received great attention from geologists recently. However, the research on Late Mesozoic and its sedimentary characteristics of the area has not been systematically conducted in details so far. In this paper, the five field typical profiles at the Lingshan Island, Laoshan, Taolin, Dingzi Bay and Zhougezhuang areas are selected for detailed case studies. The Late Mesozoic includes the Laiyang and Qingshan Groups. The Laiyang Group is characterized by gravity flow and siliceous clastic deposits, and the Qingshan Group is characterized by pyroclastic rocks. From the Laiyang Group to the Qingshan Group it is a transgression-regression cycle.