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原型盆地剥蚀量计算的传统方法较多 ,但因方法的前提条件和数据的取得均受到了较多限制 ,所以难以真实反映地层缺失的原因。波动分析则是根据由已知到未知的原理 ,由残余地层地质时间剖面沉积速度直方图建立波动方程 ,寻找不同时期的地层沉积周期波 ,判断沉积缺失的原因及缺失量。使用波动分析法 ,首先要尽可能均匀选择研究区 ,在原始资料统计分析的基础上 ,将岩性厚度剖面转化为岩性时间剖面 ,最后绘制沉积速率曲线 ,恢复地层剥蚀量。三水盆地华涌组应用此方法分析的结果为渐新世晚期及新第三纪有过沉积 ,只是沉积后又被剥蚀殆尽 ,致使现今无地层记录。现今所见的三水盆地边界 ,实际上是在 39Ma以后不同时期形成的。
There are many traditional methods for calculating erosion amount in prototype basins, but the prerequisites and data acquisition of the methods have been more limited, so it is difficult to truly reflect the reason of formation loss. Fluctuation analysis is based on the known to unknown principle, the residual stratum geological time profile sedimentation velocity histogram to establish wave equation, looking for different periods of sedimentary periodic waves, to determine the causes of sediment loss and missing. Using wave analysis method, the research area should be selected as uniformly as possible. Based on the statistical analysis of the original data, the lithology thickness profile is transformed into the lithological time profile. Finally, the sedimentation rate curve is plotted to recover the denudation of the formation. The results of this method analyzed by Huayong Formation in Sanshui Basin have been deposited in late Oligocene and Neogene, except that they were denuded after deposition and resulted in no record of formation. The boundary of the Sanshui Basin now seen is actually formed in different periods after 39Ma.