贺兰拗拉谷北段奥陶系等深流沉积  

Ordovician Contourite of the North Part of Helan Aulacogen

作　　者：丁海军[1] 孟祥化[1] 葛铭[1] 薛怀宇[1] 

机构地区：[1]中国地质大学沉积盆地研究所,北京100083

出　　处：《地球科学与环境学报》2009年第1期58-64,共7页Journal of Earth Sciences and Environment

基　　金：国家自然科学基金项目(40172043)

摘　　要：采用野外观察描述和室内分析相结合的方法,以桌子山剖面奥陶系沉积相研究为基础,识别出了典型的碳酸盐等深流沉积。首次采用Fischer图解法,求取了碳酸盐等深流沉积其可容空间变化曲线。参照野外的样品化学分析数据,得出深水等深岩的生烃能力较好,故对等深岩的研究具有潜在的矿产意义。在未来研究上,应运用地震波识别、遥感等现代科技调查手段,进行多学科综合研究,尽快建立一套完善的识别标志,以促使其逐渐成为沉积学中一个更为完善的研究领域。Representative carbonate contourite is discovered based on field outcrop descriptions and laboratory analysis based on detailed study of Zhuozishan section.This paper gets the portion of the carbonate contourite with hypothetical Fischer diagram showing changes in accommodation space as a function of cycle number.Using the chemical data of field samples,it is found that the carbonate contourite in deep sea may yield hydrocarbon effectively.It is significant to find potential mineral from contourite study.In the future,we should synthesize multidisciplinary approaches such as identification of seismic wave and remote sensing etc.and establish some effective discriminating indicators so as to advance the research ulteriorly and make it a more perfect research field in the marine sedimentology.

关 键 词：等深流沉积 Fischer图解 沉积相 层序 

分 类 号：P512.2[天文地球—地质学]