【摘要】 以测井、录井、岩心和地震资料为基础,应用构造学、沉积学基本原理,系统地探讨了研究区内早白垩世嫩江组沉积相类型、沉积特征,深入研究了嫩江组各段沉积相平面分布及盆地沉积演化规律。研究表明,嫩江组物源来自北部的长春岭-肇州水系和西南的通榆-保康水系,主要发育三角洲前缘、前三角洲、浅湖和半深湖-深湖4种主要沉积亚相类型,嫩一段到嫩五段表现为从深湖-半深湖到浅湖再到三角洲前缘沉积的过程,表现出湖盆急剧下降(嫩一段、嫩二段)到缓慢抬升(嫩三段至五段)的过程。更多还原

【Abstract】 Based on the well logging,mud logging,rock core and seismic data,involved in the application for basic principles and methods of the tectonics,sediment,the types and characteristics of sedimentary facies about the early Cretaceous Nenjiang Formation in the area are explored in a more systematic way and the plane distribution of several part of sedimentary facies along with sedimentary evolvement rules of the basin for Nenjiang Formation are studied deeply. Studies shows that Nenjiang formation provenance stems from river systems of Changchunling-Zhaozhou in the north and Tongyu-Baokang in the southwest,the delta front,former delta,shallow lake and semi-deep lake-deep lake for the four major sedimentary subfacies types are mainly developed,which indicates that the sedimentary processes are from deep lake-semi-deep lake to shallow lake,than to delta front from En1 to En5,It presents the process that the lake basin tenders to sharp decline En1 to En2 to slowly uplift as a whole En3 to En5.更多还原