豫西济源——义马盆地早中生代湖泊沉积体系的演化  

THE EVOLUTION OF THE EARLY MESOZOIC LACUSTRINE DEPOSITIONAL SYSTEM IN THE JIYUAN-YIMA BASIN OF WEST HENAN

作　　者：曾玉凤[1,2] 廉有轩[1,2] 

机构地区：[1]焦作工学院 [2]郑州煤田职工地质学院

出　　处：《河南地质》1998年第3期191-195,共5页Henan Geology

摘　　要：豫西济源—义马盆地早中生代地层谭庄组中上段（Ｔ３）和鞍腰组（Ｊ１）是典型的湖泊体系沉积。谭庄组沉积期湖泊相对较浅，受气候控制。由于受季风环流的影响，推测晚三叠世晚期的季节性更强。在三叠纪末—早侏罗世，发生了走滑构造作用。鞍腰组沉积期为走滑引张体制下的湖泊，水体较深，反映了构造沉降的开始。在随后的走滑挤压阶段，该湖泊为三角洲和河流相碎屑沉积物充填。The middle-upper parts of the Tanzhuang Formation(T 3)and the Anyao Formation(J 1)in the Jiyuan-Yima basin of the western Henan Province are the Early Mesozoic typical sediments of lacustrine system.The lake in the sedimentary epoch of the Tanzhuang Formation was relatively shallow and controlled by the climate.Owing to the influence of monsoon circulation,the seasonal change of the late Late Triassic may be more strong by inference.When in age from the last Triassic to Early Jurassic,the strike slip tectonic processes occurred in the study area.The lake in the depositional epoch of the Anyao Formation under strike slip extentional system had the deeper water masses and showed the beginning of tectonic subsidence.In the after strike slip compressional stage,this lake was filled up with the clastic sediments of deltic and fluvial facies.

关 键 词：早中生代 地层 湖泊演化 沉积体系 盆地 

分 类 号：P534.5[天文地球—古生物学与地层学] P512.3[天文地球—地质学]