Abstract:The contemporaneous deformed structures have been founded in the Graptolite shale Member of the Wufeng Formation which is characterized by black carbonaceous shale in the Late Ordovician from the southern edge of upper Yangtze Sea, which is composed of small sized folds and graded faults and is overlaid and underlain normal sedimentary black shale. From the temporal distribution, the contemporaneous deformed structures began in Dicellograptus complexus of later Katian Stage, and ended in Paraorthograptus pacificus, the ending of the Katian Stage. From spatial distribution of deformed structures which close to Yunnan—Guizhou—Guangxi ancient continent on the side of the upper Yangtze sea basin (Gulin—Tongzi—Songtao) characterized by small sized folds; seaward side (Qijiang—Xiushan) gradually transited to the graded fault, and accompanied with several small sized folds, but the contemporaneous deformed structures were not found in Changning area, southern Sichuan. The contemporaneous deformed structures located seaward side of Yunnan—Guizhou—Guangxi ancient continent is more strengthen than landward, and the deformed intensity gradually increased from landward to seaward, and the deformed intensity is gradually increased from west to east. It is shows that west side of Yangtze Sea may be relatively flat topography of ancient seabed along the Yunnan—Guizhou—Guangxi ancient continent, and the east has a steep slope. Flame dikes formed earthquake events which layered distribution within the contemporaneous deformed structures only at Xiushan area, Southeast Chongqing. In addition, a bentonite layer is separately on and under the deformed structures and between deformed structures and black shales at Tongzi area, Thus, volcanic eruptions may be the main factors. Sliding plastic mudstone in a steep slope formed contemporaneous deformed structures at the background of multi cruatal shake caused by volcano events. Caledonian movement was intense activity during the Late Ordovician, and leading to a steep submarine topography in the east than west, it may be related to Yangtze block and Cathaysia block collision during the late Ordovician.