Abstract
In order to restore the geological deposition process of the Shanxi Formation of the Upper Paleozoic in Dongpu depression, the Shanxi Formation of Mao 4 well was taken as the research object. In this paper, the method of frequency spectrum analysis and one-dimensional continuous wavelet transform is used to process the natural gamma logging curve which is closely related to the climate transform. The scale values identified through the high-frequency cycle thickness value and time-frequency chromatogram model extreme value analysis in the spectrum analysis are consistent with the ratio of the 3 elements of the earth orbit.
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