准南煤田侏罗系地层层序界面识别及意义

本文在收集研究以往地质勘查资料的基础上,运用层序地层和现代沉积学理论,研究了准南煤田侏罗系地层层序界面特征,总结出了层序地层界面识别标志有:露头标志、钻探岩芯、测井物理曲线、沉积物的颜色、沉积相的突变及地层不整合面所揭示的层序界面特征,以上标志可帮助我们恢复古地理,建立层序地层格架,研究沉积环境和沉积展布,为煤层及伴生资源的勘查研究提供依据。

Distinguishing Interfaces of Sequences of Jurassic Strata in Coalfield in South Dzungarian Basin and its Significance

On the basis of analysis and collecting previous geological exploration data, applying theories of sequence stratigraphy and mordern sendimentology, features of interfaces of sequences of Jurasic strata in coalfield in South Dzungarian Basin are analysed in this thesis and the sequence subdivision marks are summarized as following： marks of outcrops, cores of drilling, curves of geophysical log, colours of sediments, sudden changes of sedimentary pattern and features of interfaces of sequence revealed by incontinuous sequence strata. The marks mentioned above can help us to restore paleogeography, to establish frame of sequence strata, to research sedimentary environments and its distribution, ultimately to provide evidences for exploration research for coalseams and other coexisting resources.