松辽盆地构造演化及成盆动力学探讨  

AN APPROACH TO TECTONIC EVOLUTION AND DYNAMICS OF THE SONGLIAO BASIN

作　　者：胡望水[1] 吕炳全[2] 张文军[1] 毛治国[1] 冷军[3] 官大勇[1] 

机构地区：[1]长江大学地球科学学院,湖北荆州434023 [2]同济大学海洋地质与地球物理系,上海200092 [3]中国石油化工集团公司江汉油田分公司勘探开发研究院,湖北潜江434124

出　　处：《地质科学》2005年第1期16-31,共16页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家自然科学基金(批准号:49773198);中国石油天然气集团公司"九五"科技工程项目基金(编号:97020605);湖北省自然科学基金(编号:99J111)联合资助

摘　　要：松辽盆地晚侏罗世以来的构造演化经历了10个阶段:缓慢裂陷和快速坳陷—加速裂陷和快速坳陷—减速裂陷和慢速坳陷—慢速裂陷和快速坳陷—加速裂陷和加速坳陷—减速裂陷和减速坳陷—裂陷、坳陷终止和缓慢反转—快速反转和快速差异坳陷—慢速反转和慢速差异坳陷—反转停止和坳陷终止。构造发育演化的结果形成了“下断中坳上隆顶平”的盆地结构。“中坳”部分沉积的可容纳空间,54%来源于盆地基底的长期伸展坳陷;“上隆”部分沉积的可容纳空间,31%来源于盆地基底的受压坳陷。构造作用的转换起因于东部区域应力场的转变。In the Songliao Basin, the extensional depression occurred from Late Jurassic, experienced a long process of strong—weak—stronger—strongest—weak—stop evolution, with the stronger extension in phase of the Shahezi Formation (J 3sh) depositing, the strongest extension in period of the Quantou (K 1q) and Qingshankou (K 1qn) Formations depositing, and the extension stopped after the Nenjiang Formation (K 1n) depositing. With the rifting and extensional depression stopped, the inversion occurred, and the differentiated depression experienced a long course of weak—strong—weak—stop evolution, with the strongest compression in period of the Sifangtai (K 2s) and Mingshui (K 2m) Formations depositing. The post-inversion tectonic strata were depressed by the differentiated rising in Pleistocene and Holocene. The growth-structure trellis of the basin consisted of four styles: 1)normal growth fault and its extensional structural combination, 2)growth syncline, growth anticline and T 2 normal growth fault, 3)positive inversion structure and growth structure, and 4)post-inversion growth syncline. The Songliao Basin could be divided into six units: the Southwest Rise, the Southeast Rise, the Northeast Rise, the North Plunge, the West Slope and the Central Depression. Based on the distribution and deformation of the inversion structures in the Songliao Basin, four zones of inversion structures were recognized, namely, the Deshu-Changchunling, the Wangkui- Renminzhen, the Daqing-Gudian and the Lindian-Honggang inversion structures. The extent of the inversion structures decreased from the east to the west. The basin evolution experencied 10 phases: initial rifting—fast depression, accelerated rifting—fast depression, deceleration rifting—slow depression, slow rifting—fast depression, accelerated rifting—accelerated depression, deceleration rifting—deceleration depression, rifting-depression termination—slow inversion, fast inversion—fast difference depression, slow inversion—slow differenti

关 键 词：坳陷 构造演化 可容纳空间 松辽盆地 区域应力场 构造作用 基底 盆地结构 沉积 

分 类 号：P618[天文地球—矿床学] P542[天文地球—地质学]