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本文通过对鄂尔多斯盆地白垩系的野外考察 ,认为该地层为一特殊类型的陆相层序——沙漠层序。利用实地考察剖面 ,建立了该地层的层序地层框架 ,提出沙漠扩张体系域和沙漠收缩体系域的概念及体系域的构成单元 ,认定在垂向上具有三次完整的层序旋回 ,并在空间上描述了各沉积体系的配置方式及不同时期各成因单元的叠加型式 ,以鄂尔多斯盆地白垩系为对象对沙漠层序的发育演化特征作了综述。最后 ,对沙漠层序的控制因素作了粗浅探讨。本文对完善陆相盆地充填层序的研究具有较大的理论意义。
Based on the field investigation of the Cretaceous in the Ordos Basin, this paper considers the formation as a special type of terrestrial sequence - desert sequence. Based on the fieldwork profile, the sequence stratigraphic framework of this stratum is established. The concepts and domain units of the desert expansion system tract and desert shrinkage system tract are proposed. It is concluded that there are three complete sequence-swirling in the vertical and spatially Described the configuration of sedimentary systems and the superposition types of genetic units in different periods, and summarized the development and evolution of desert sequence in the Cretaceous of Ordos Basin. Finally, the controlling factors of the desert sequence were briefly discussed. This article has a great theoretical significance to improve the filling sequence of continental basins.