摘要
沉积盆地的沉降过程受沉积物载荷的控制,但热也起着相当重要的作用。本文系用一种热弹性分层模型,考虑载荷及温度的共同影响,并计入了二者之间的弱耦合作用,讨论盆地的沉降过程。用这种热弹性分层模型模拟计算了密执根(Michigan)盆地在古生代的沉降曲线。密执根盆地是北美大陆上一近圆形的大盆地,具巨厚层沉积物,构造作用简单,属于稳定的克拉通内部盆地。计算结果与实际资料能较好地吻合,并且指出了有关热事件是升温或者降温的性质。
The process of subsidence is controlled by loading of sediment in sedimentary basin, while heating also plays important role. In this paper, the layered-thermo-elastic model is adopted to discuss the subsidence in basin, considering the co-operation of load and temperature and their weak coupling. The subsidence curves of Michigan Basin during Paleozoic era were modeled by using the layered thermo-elastic model in the paper. Michigan basin,a stable craton basin is a huge round basin in North American Continent where the sediment is rather thick,however the structure is very simple. The computed results were coincided with the measured data,and showed that the temperature in the related heat events were devated or depressed.
出处
《应用基础与工程科学学报》
EI
CSCD
1994年第Z1期213-221,共9页
Journal of Basic Science and Engineering
基金
国家自然科学基金
关键词
密执根盆地
热弹性
沉降曲线
Michigan Basin,thermo-elastic,subsidence curve