CAJ | 학술논문

借助高精度层序地层学、构造地层学、精细沉积体系分析和构造-古地貌恢复的理论和技术手段,对长岭凹陷坳陷期盆地发育特征和沉积过程开展了整体性系统研究.研究认为,坳陷时期长岭凹陷呈现多环坡折带控制下的隆洼格局,坡折带的存在不仅分割了空间上的地理单元,而且控制了空间上的相带分异,从而造成主要目的层段古地貌形态与沉积体系空间展布具有密切的耦合关系.以此为基础,在研究区划分出4个有利勘探区带:隆起带———平原岩相域,斜坡带———前缘近端岩相域,深坳带———前缘近端岩相域,深坳带———前缘远端岩相域,为深入勘探指明了方向.
차조고정도층서지층학、구조지층학、정세침적체계분석화구조-고지모회복적이론화기술수단,대장령요함요함기분지발육특정화침적과정개전료정체성계통연구.연구인위,요함시기장령요함정현다배파절대공제하적륭와격국,파절대적존재불부분할료공간상적지리단원,이차공제료공간상적상대분이,종이조성주요목적층단고지모형태여침적체계공간전포구유밀절적우합관계.이차위기출,재연구구화분출4개유리감탐구대:륭기대———평원암상역,사파대———전연근단암상역,심요대———전연근단암상역,심요대———전연원단암상역,위심입감탐지명료방향.
By means of high-resolution sequence stratigraphy, tectonic stratigraphy, fine sedimentary system analysis and tectonic-palaeogeomorphology recovery, the formation feature and process of the Changling Sag dur-ing depressive stage were studied systematically. It was concluded that during the depressive stage, the sag was both uplifted and depressive controlled by multiple circles of slope-break belts. The slope-break belts not only di-vided geographic units, but also controlled the changes of sedimentary facies, resulting in the close coupling rela-tionship between palaeogeomorphology and sedimentary system distribution. Furthermore, 4 favorable exploration regions in the study area were proposed, including the plain lithofacies of uplift belt, the proximal delta front of slope belt, the proximal delta front of deep depression, and the far delta front of deep depression.