鄂尔多斯盆地中下侏罗统延安组成岩作用研究  

ON DIAGENESIS OF THE YAN'AN FORMATION OF THE LOWER-MIDDLE JURASSIC SERIES IN ORDOS BASIN

作　　者：雷建喜[1] 徐受民 徐安顺 

机构地区：[1]中国地质大学地质系 [2]大庆油田

出　　处：《地球科学（中国地质大学学报）》1991年第6期661-669,共9页Earth Science-Journal of China University of Geosciences

摘　　要：本文结合对鄂尔多斯盆地进行的成因地层分析,运用沉积地球化学和热力学理论探讨了延安组砂岩的成岩作用特征及其作用机理,并将其自上而下划分为三个成岩作用带。研究表明,由于沉积盆地未曾发生强烈坳陷,成岩作用并未进入后生成岩作用阶段,仅仅进入晚期成岩作用阶段。最大成岩温度低于150℃。Based on the genetic stratigraphic analysis of the Ordos basin, by use of sedimentary geochemical and thermodynamical analyses, this paper deals with the diagenesis of sandstones in the Yan'an Formation which can be divided into three diagenesis belts from bottom to top. It shows that the basin has not been to the epigenesis stage but only to the late diagenesis stage. The maximal temperature of the diagenesis was below 150℃.

关 键 词：成岩作用 早件罗世 延安组 砂岩 

分 类 号：P588.212.3[天文地球—岩石学]