泌阳断陷双河—赵凹地区核三上段陆相层序形成过程的计算机模拟

综合考虑陆源碎屑物供给、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。实际可容空间变化往往由多因素复合作用所致 ,尤其湖平面变化与基底构造沉降的叠合。在综合分析研究区实际地质资料的基础上 ,建立了下第三系核三上段沉积时期湖平面变化及基底构造沉降曲线理论模型 ,并求取了其可容空间变化速率曲线。据此 ,采用自行研制的定量层序地层模拟系统 ,模拟了泌阳断陷双河—赵凹地区下第三系核三上段沉积时期可容空间变化过程与陆相层序响应特征。

COMPUTER SIMULATION ON FORMING PROCEDURE OF CONTINENTAL SEQUENCE IN THE UPPER MEMBER OF Eh~(3-2), SHUANGHE-ZHAOWA,BIYANG FAULT SUBSIDENCE

Synthetically considering plenty of geological factors such as recharge of land-source fragmental material,sedimentation of chemically formed carbonate rock,sedimentary erosion and resedimentation, gravity flow deposit,structural elevator,horizontal displacement and so on,a math-physical equation which is comprehensive to simulate every type of basin was set up.In general, actual accommodation change is caused by multiple factors,especially by the congruence of denivellation and basement tectonics subsidence.Based on the synthetical analysis of the actual geological data in researching area,the theoretical curve model of denivellation and basement tectonics subsidence during the sedimentary period of the upper part of upper member of the Hetaoyuan Fm. in Shuanghe-Zhaoao of Biyang fault subsidence has been established,and the rate curve of accommodation change has also been acquired.According to above all and using the simulation system of quantitative sequence stratigraphy designed by this paper,the responsed characteristics of lake facies quence with the procedure of accommodation change has been simulated.