冀北承德地区晚侏罗世盆地充填记录及其构造含义  

Late Jurassic basin-fill record of Chengde area in northern Hebei and its tectonic implication

作　　者：刘健[1] 赵越[1] 叶浩[1] 

机构地区：[1]中国地质科学院地质力学研究所,北京100081

出　　处：《中国地质》2013年第1期140-151,共12页Geology in China

基　　金：国家重点基础研究973项目(2006CB403501);国家深部探测专项项目(SinoProbe-08-01-03)联合资助

摘　　要：冀北承德盆地由晚侏罗世早期髫髻山组和晚侏罗世中期至早白垩世早期土城子组地层组成。盆地充填的土城子组沉积学特征显示盆地北区沉积过程受控于北部的丰宁—隆化断裂带的构造活动,盆地南区受南缘承德县断裂和吉余庆断裂的构造作用控制。土城子期承德盆地快速充填过程是该时期区域较强烈的一次板内变形幕的反映。这一陆内变形幕起始于土城子组,结束于土城子组沉积期末,并使承德盆地形成了一个不对称向斜褶皱。早白垩世张家口组底部火山岩下的不整合(135±1 Ma)制约了这一时代上限。Chengde basin in Hebei Province is composed of volcanic rocks of early Late Jurassic Tiaojishan Formation and coarse clastic rocks of middle Late Jurassic-early Early Cretaceous Tuchengzi Formation. Based on a sedimentological study of basin-fiU of the Tuchengzi Formation, the authors have reached some conclusions. The northern and southern areas of the Chengde basin were controlled by the Fengning-Longhua thrust faults and Chengde Xian-Jiyuqing thrust faults, respectively. The rapid basin filling process of Chengde basin was the response to the strong intraplate deformation in this period. The intracontinental deformation episode started at the deposition of Tuchengzi Formation and was completed at the end of the deposition. The tectonic deformation process caused Chengde basin to form an asymmetric syncline fold. The age upper limit is tom,trained bv the unconformity beneath volcanic rocks of the Zhangiiakou Formation with the a^e of 135？1Ma.

关 键 词：承德盆地 髫髻山组 土城子组 盆地充填 构造作用 

分 类 号：P534.52[天文地球—古生物学与地层学]