Tectonic ActivitySea Level Change and Sedimentary Response of Paleozoic Basins in South Qingling Mountains

Key words: 
• South Qingling Mountains /
• sedimentary basin /
• tectonic activity /
• sea level change /
• sequence stratigraphy

Abstract: Located in the passive margin of the north of Yangtze Platform, Zheng An and Xun Yang basins in South Qingling Mountains have developed a series of Early PaleozoicMesozoic carbonate rocks containing some fine clastic rocks, which are characteristic of stable deposition, clear lithological facies, stratigraphical sequence and tracts as well as sensitive reflection to sea level change, so this area is an ideal place to study sea level change and its depositional response. On the basis of stratigraphical features and lateral change, 10 sequences have been divided as well as some depositional boundary and tracts. The evolution of sedimentary basins has close relationship with tectonic regime, regional tectonic activity, and tectonics controlled sea level change. Through the analysis on regional sequence framework and stratigraphy, we can furthermore study the history of regional tectonic activity and restore the details of sea level change to establish the lithological and chronological stratigraphical framework which is helpful for elucidating the accurate sensitive change of sea level change and describing the paleoclimate,plaeogeography and paleoenvironment as well as predicting depositional mineral resources. 