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泌阳断陷下第三系核三上段可划分为三个陆相层序（S4、S5和S6）．每一层序自下而上发育TST、HST和RST三个体系域。对泌阳断陷下第三水核三上段S5层岸各体系域中几类岩石地球化学标型参数的研究发现，在S5层序形成时期，由于在一个旋回性变迁的古气候（古湿度和古温度）驱动下，湖平面发生了一次完整的旋回性变化；湖泊水体的物理化学条件（古盐度、古酸碱度、古氧化还原电位等）及物源性质亦随之发生一次旋回性变化：相应地，沉积岩中岩石类型、矿物成分（主要指粘土矿物和胶结物）、化学成分（包括常量元素和微量元素及水溶性离子等）以及碳、氧同位素等皆发生了一次旋回性变化。
The third upper member of the Tertiary core in the Biyang fault depression can be divided into three continental sequences (S4, S5 and S6). Each sequence of TST, HST and RST developed from bottom to top. It is found that during the formation of S5 sequence, the paleoclimate (Paleo-Humidity And palaeo-temperature), a complete cyclonic change took place in the lake plane. The physicochemical conditions (ancient salinity, paleoclimatic and paleodic redox potential) and source properties of lake water also changed cyclically : Correspondingly, the rock type, mineral composition (mainly clay minerals and cements), chemical composition (including major and trace elements and water-soluble ions), and carbon and oxygen isotopes in sedimentary rocks all undergo a cyclical change.