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根据侏罗系砂岩碎屑的岩矿组成及主元素地球化学分析， 认为合肥盆地南部侏罗系物源主要来自大别造山带， 具有明显的陆壳岛弧混杂属性。主要物源类型经历了下—中侏罗统的 “再旋回造山带”类型向上侏罗统 “弧造山带”类型的复杂演变， 期间中侏罗世特别是相当于凤凰台组时期由于强烈的剥离作用， 大别造山带切割的 （ｄｉｓｓｅｃｔｅｄ） 岩浆弧物源已有所暴露。据古地理恢复， 推断侏罗纪合肥盆地南部沉积演化曾受控于挤压动力体制， 极可能与扬子板块进一步陆内俯冲作用有关
According to the lithofacies composition and main element geochemical analysis of the Jurassic sandstone detritus, the Jurassic source rocks in the southern Hefei Basin are mainly derived from the Dabie orogenic belt and have obvious mixed features of continental crust and island arc. The main types of provenance underwent the complex evolution of the “Jurassic” “Gyrocompass” type from the Lower-Middle Jurassic upward to the Jurassic “arc orogenic belt”. During the Middle Jurassic, especially during the period corresponding to the Phoenix platform, Peeled off, the Dachang orogenic disseminated magmatic arc source has been exposed. According to paleogeographic restoration, it is inferred that the sedimentary evolution in the southern Hefei Basin of the Jurassic was controlled by the extrusion dynamic regime and is probably related to the further intracontinental subduction of the Yangtze plate