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研究三角洲的第四纪沉积过程,是认识三角洲发育历史的一个重要方面,沉积速率则是沉积过程的综合反映。本文分析珠江三角洲各个发育阶段、各个沉积区的沉积速率及其变化和差异,为予测三角洲的发展趋势和淤积速度提供必要的参数。一、沉积速率的求算求算沉积速率,首先必须知道沉积层的厚度,并测定其沉积年代。我们根据1,226个钻孔和204个电测深点的资料,编制了珠江三角洲第四系厚度图,计算出珠江三角洲第
Studying the Quaternary sedimentary process of the delta is an important aspect of understanding the development history of the delta. Sedimentation rate is a comprehensive reflection of sedimentation process. This paper analyzes the sedimentation rate and its variations and differences in various developmental stages and sedimentary areas in the Pearl River Delta and provides necessary parameters for predicting the development trend and deposition rate of the delta. First, the deposition rate calculation Calculate the deposition rate, we must first know the thickness of the sedimentary layer, and determine the deposition time. Based on the data of 1,226 boreholes and 204 electrical sounding points, we compiled the thickness maps of the Quaternary in the Pearl River Delta and calculated the thickness of the Pearl River Delta