北京西山地区岩溶发育史及岩溶环境变迁  

THE HISTORY OF KARST DEVELOPMENT AND THE EVOLUTION OF KARST ENVIRONMENT AROUND THE WESTERN HILLS OF BEIFING

作　　者：翁金桃[1] 章程[1] 蒋忠诚[1] 谢运球[1] 郑治芗[1] 

机构地区：[1]地质矿产部岩溶地质研究所,北京市地质研究所

出　　处：《中国岩溶》1995年第1期41-48,共8页Carsologica Sinica

基　　金：地矿部定向科研基金项目

摘　　要：根据地壳运动所遗留的地貌形态，本区可划分为古生代和新生代二个岩溶发育期。由于本区新构造运动的特点决定了岩溶发育既具有阶段性又具有继承性。据此，新生代岩溶发育期又可划分为三个亚期：早第三纪岩溶发育亚期、晚第三纪岩溶发育亚期、第四纪岩溶发育亚期。本文根据不同时期形成的岩溶形态组合特征、洞穴化学沉积物和碎屑沉积物及具有代表性的洞外沉积物的性状、所含化石、孢粉组合、粘土矿物和重矿物组合及其化学成分和扫描电镜分析、稳定同位素和古地磁测定以及大量的测年资料，综合研究了本区晚第三纪以来的岩溶形成环境及其历史变迁。According to the landforms、 left over by crustal movement,the history of karst deveiop-ment in this area can be divided into two stages:one is the Paleozoic karst developmentstage,another is the Cenozoic karst development stage。The characteristics of neotectonismlead to staged and inherited karst development,accordingly the Cenozoic karst developmentstage can be divided into three substages:the Early Tertiary karst development substage,theLate Tertiary karst development substage and the Quaternary karst development substage.This paper makes a synthetical study on the karst environment and its historical evolu-tion since the Late Tertiary in this area, based on the karst feature complex that formed invarious epoches,the properties of karst formation,fossils,sporopollen statistics,clay mineralassemblages and their chemical composition, placer mineral assemblages and their SEM anal-ysis,stable isotope,paleogeomagnetism ,as well as a vast amount of dating data etc.

关 键 词：北京 岩溶发育史 古环境 西山地区 岩溶环境 

分 类 号：P931.5[天文地球—自然地理学]