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扬子西缘龙门山地区泥盆系可识别出一个二级、三个准二级、十八个三级沉积旋回和三十余种高频旋回，低级（高频）旋回往往以不同形式叠加构成高一级沉积旋回。高频旋回具有复杂的相序结构样式，大致可概括为非对称向上变浅、加深和对称型三种。整个泥盆纪沉积旋回的旋回演化作用早期为异旋回作用，中期为自旋回与异旋回作用交替，晚期则转变成自旋回作用为主。
The Devonian in the Longmenshan area, on the western margin of the Yangtze, can identify one second-level, three quasi-second-level and eighteen third-level sedimentary cycles and more than thirty high-frequency cycles. The low-level high-frequency cycles are often superimposed in different forms High level sedimentary cycle. High-frequency cycle has a complex phase sequence structure style can be broadly summarized as shallow asymmetrical up, deepen and symmetrical three. The whole Devonian sedimentary cycle of the evolution of cyclonic gyrase is the role of allogeneic gyrus at the early stage of the cycle for the spin back and allogeneic alternating role in the late turn into spin-based.