Method of identifying Milankovitch cycle quantitatively

The invention relates to a method of identifying Milankovitch cycle quantitatively. The method comprises the following steps of (1) selecting Gamma ray as a proxy indicator of Milankovitch cycle identification; (2) pre-processing Gamma data; (3) identifying theoretical orbital cycle value so as to acquire a theoretical cycle set M; and (4) identifying Milankovitch cycle in stratum, the specific process comprises following steps of first, organizing Gamma data in a target stratum; second, performing spectrum analysis on Gamma data in a selected stratum; and third, matching so as to obtain Milankovitch cycle and cycle thickness corresponding to the Milankovitch cycle. 本发明涉及种定量识别米兰科维奇周期的方法，包括以下步骤：1)选择自然伽马曲线作为米兰科维奇周期识别的替代性指标；2)对自然伽马数据进行预处理；3)对理论轨道周期值进行识别，获得理论周期集合M；4)对地层中的米兰科维奇周期进行识别，具体过程如下：①对目标地层中的自然伽马数据进行整理；②对选定地层的自然伽马数据进行频谱分析；③实施匹配，从而获得米兰科维奇周期，以及米兰科维奇周期对应的旋回厚度。