摘要
研究油气动态演变历史,需了解各次构造变动中被剥蚀地层量,本文试对各构造期活动特点分别采用沉积速率比值法、沉积速率趋势法、剥蚀速率法、区域地质法和占地温法等,分别恢复其厚度,为研究油气演化、运聚的动态发展及它们在时空间的匹配关系提供参数.
Abstract
For the studies on oil/gas evolution based on dynamic equilibrium principles and on its related geological topics,the author of this paper studies the restoration of the thickness of various denuded sequences in Sichuan Basin during the Caledonian,Dongwu,Indosinian and Xishan movements.respectively.The parameters applied in the study are derived from the ratio of depositional rate,the trend of depositional rate,denudation rate,regional geology,and paleotemperature.Therefore,it reveals the distributive regularity of the denuded sequences and reconstruct the depositional history of Sichuan Basin and the denudational history.However,it provides basis for the analysis on basin evolution,structure,trap,depositional sequence and generation,migration,and accumulation of oil/gas,as well as on timing and spacial coupling.
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