本文论述了近代黄河三角洲沉积物的数量特征、粒度特征及共分布、结构与构造特征,认为:1.各期亚三角洲的淤积厚度、速率和陆地淤积率都与亚三角洲的建造历时及废止方式有关,淤积厚度有共最大限度;2.沉积颗粒均细于0.25mm级,粉砂粘土占优势,无推移质段。Mz(φ)值与δ_f成正比,与Kg成反比;3.沉积构造与沉积水动力及颗粒大小有关,沉积物的分布与结构反映了三角洲建造的基本特征。

This article studies the quantity,grain size,and distribution characteristics of the deltaic sedimentary,also sedimentary structure and construction of the delta.The following conclusions are obtained.(1) In every subdeltaic construction,the thickness,velocity and land sedimentary ration are in relation to their living time and abandoned pattern.There is a maximum in every subdeltaic sedimentary.(2) The coarsest grained-grad is 0.25mm,and principal composition is salt sand and clay.There is nonrolling components of sedimentary.(3) The sedimentary structures are in relation to the hydrodynamics and grain size of sediments.The distribution and construction of the deltaic sedimentary is a reflection of the characters of the deltaic development.