摘要
地层层序是古海平面变化的信息记录载体 ,有效容纳空间 (C(t) )是地层层序的堆积场所 ,是海平面变化 (L(t) )、构造沉降 (Y(t) )和地质时间 (t)的函数 .通过对上扬子地台西缘二叠—三叠系层序地层学研究 ,在总结前人海平面变化曲线研究方法的基础上 ,建立了海平面变化曲线的数学模型 (数学地质模型和数学函数模型 ) ,即首先创立海平面变化曲线的数学地质模型 :C(t) =L(t) +Y(t) ,进而提出了海平面变化曲线的数学函数模型 .运用该模型定量编制了上扬子地台西缘二叠—三叠纪海平面变化曲线 .
The stratigraphical sequences are considered as a medium to record sea_level changes. The effective accommodation space ( C(t) ), an accumulation strata for stratigraphic sequences, is a function of sea_level changes ( L(t) ), tectonic subsidence ( Y(t) ) and geological time ( t ). The research into the Permian-Triassic sequence stratigraphy in the western margin of the Upper Yangtze block, and the summary of previous research methods for the sea_level change curves both have been employed to establish the mathematical model of sea_level change curves, including mathematical geological model and mathematical function model. Firstly, the mathematical geological model of sea_level change curves: C(t) = L(t) + Y(t) is established, then the mathematical function model is proposed. The mathematical model has been used to compile quantitatively the Permian-Triassic seal_level change curves on the western margin of the Upper Yangtze block.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
2000年第2期117-121,共5页
Earth Science-Journal of China University of Geosciences
基金
四川省跨世纪杰出青年学术带头人培养基金
关键词
海平面变化曲线
构造沉降
数学模型
地质历史
sea_level change curve
tectonic subsidence
effective accommodation space
mathematical model.
