湖平面变化及物源供给对陆相层序影响机理的计算机模拟

综合考虑陆源碎物供给、内源碳酸盐岩沉积、沉积物侵蚀与再沉积、重力流沉积以及构造升降和水平位移等诸多地质因素，建立了一个能够模拟各型盆地的综合数学物理方程式。采用自行研制的定量层序地层模拟系统，以断陷湖盆陡坡带（泌阳断陷双河－－赵凹地区）为例，在假定基底构造沉降为匀速沉降作用、物源供给为中等匀速陆源碎屑物注入、湖平面变化为正弦曲线的条件下，模拟了湖平面变化对陆相层序发育的影响机理；在假定湖平面呈正弦

Computer Simulation on Influencing Mechanism of Lacustrine Level Change and Sedimentary Source Recharge in Terrigenous Sequence

Synthetically considering plenty of geological factors, such as recharge of landsource fragmental material, sedimentation of chemically formed carbonatite, sediment erosion and resdimentation, gravity flow, structural adjustment, horizontal displacement and so on, a math-physical equation which is comprehensive to simulate every type of basin was set up. Using the simulation system of quantitative sequence stratigraphy designed by this paper, and taking the steep slope zone of faultdepressed lacustrine basin(e.g.Shuanghe-Zhaoao area of Biyang fault-depression) as a example, influencing mechanism of lacustrine level change on terrigenous sequence has been simulated based on the hyphthetical condition that structural subsidence of basement appears uniform velocity, and recharge of land-source fragmental material is in middle and uniform velocity, and lacustrine level change presents a sinusoidal curve. And the responsed charateristics of terrigenous sequence with the condition that sedimentary source recharge is uniform, but in high, middle and low velocity, has respectively been simulated based on the hypothetical condition that lacustrine level change presents a sinusoidal curve, and structural subsidence of basement appears uniform velocity.