CAJ | 학술논문

通过对石炭纪地层单元的岩石特征、沉积特征和层序结构分析，认为宁夏贺兰山地区石炭纪地层发育良好，层序连续，其岩石地层序列自下而上可划分为土坡组和太原组；岩石组合以陆源碎屑岩、泥质岩和碳酸盐岩沉积为主；贺兰山地区石炭系沉积相演化序列总体呈后退型浅水三角洲沉积层序；在晚石炭世到早二叠世。三角洲体系的沉积构成样式发生了明显变化，反映出早期受波浪作用较强、中期潮汐作用明显、晚期河流作用迅速增强的沉积演化规律．
통과대석탄기지층단원적암석특정、침적특정화층서결구분석，인위저하하란산지구석탄기지층발육량호，층서련속，기암석지층서렬자하이상가화분위토파조화태원조；암석조합이륙원쇄설암、니질암화탄산염암침적위주；하란산지구석탄계침적상연화서렬총체정후퇴형천수삼각주침적층서；재만석탄세도조이첩세。삼각주체계적침적구성양식발생료명현변화，반영출조기수파랑작용교강、중기조석작용명현、만기하류작용신속증강적침적연화규률．
Analysis of characteristics of the rocks of Carboniferous strata unit, the structure of sedimentary features and sequence shows that Carboniferous strata developed well and sequence continuously in Helan Mountains area, and litbostratigraphic sequences from bottom to up can be divided into the Tupo Fm and the Taiyuan Fm. The rock association mainly consists of terrigenous clastic rock, argillaceous rock and carbonate rock sedimentary. As to the rock characteristics, stratigraphic sequence, facies and environment evolution characteristics, Helan Mountains area of carboniferous sedimentary evolution of the sequence is a retreat-type shallow water delta sedimentary sequence in the genera]. In the late carboniferous to the early Permian, constituent style of deposition has changed significantly in the delta system, it shows a rule that there is strong wave action in early stage, tidal effects become obvious in middle stage, and fluvial sedimentary evolution increases rapidly in late stage.