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digenesis n.【生物學】(有性生殖和無性生殖的)世代交替。

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Under the guidance of the theories of sedimentation , paleontology , stratigraphy , reservoir geology and digenesis , synthetically applying the methods of the conjunction of spot - line - surface , macro - microscopic and field - indoor , there is a comprehensive study for the upper permian series in stratum , rock , sedimentary facies and diagenesis , especial for the type and characteristics of sedimentary facies , in the paper . based on the above , the vertical evolutionary model of the sedimentary environment is explained by the study of the elevation profile and transverse profile and the regional geological characteristics 本文主要是以沉積學、古生物學、地層學、儲層地質學等相關理論為指導,運用點線面、野外與室內、宏觀與微觀相結合的方法,并借助普通顯微鏡、陰極發光顯微鏡等手段對川西地區北部上二疊統的地層、巖石、沉積相以及成巖作用進行了研究,尤其是對沉積相的類型及特征作了詳細的劃分與闡述。