雅丹地貌形成年代研究方法简评与应用  

DATING METHODS FOR CHRONOLOGICAL STUDY OF YARDANG LANDFORMS:A REVIEW AND PERSPECTIVE IN APPLICATION

作　　者：牛清河[1,2,3] 屈建军[1,2,3] 柳本立[1,2,3] 王军战[1,2,3] 谢胜波[1,2,3] 王涛[2,3] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所敦煌戈壁荒漠研究站,兰州730000 [2]甘肃省风沙灾害防治工程技术研究中心,兰州730000 [3]中国科学院沙漠与沙漠化重点实验室,兰州730000

出　　处：《海洋地质与第四纪地质》2013年第4期201-208,共8页Marine Geology & Quaternary Geology

基　　金：国家自然科学基金项目(41201003;40930741);中国博士后基金项目(2012M521819)

摘　　要：雅丹地貌形成年代是确定其侵蚀速率和侵蚀量的重要依据,也是深入认识其形成发育过程及其与环境关系的前提。然而作为侵蚀性地貌类型,雅丹地貌的形成年代问题一直困扰着研究人员,成为雅丹地貌研究中的一大瓶颈问题。介绍和分析了已有的雅丹地貌形成年代研究方法,并简要评述其优缺点,然后,将部分方法应用到敦煌雅丹国家地质公园区的雅丹地貌形成年代的研究中,得出该区域雅丹地貌开始形成的年代不晚于10.87kaBP,不早于(39.15±3.88)kaBP,最后对雅丹地貌形成年代学研究需努力的方向做出展望。The age of the Yardang landform is the important parameter for determination of erosion rate and erosion quantity.It is also the premise for deeper understanding of the formation and evolution of the Yardang landform,and the relationship between the Yardang and environment.As a type of erosional landforms,the age of the Yardang landform always remains as a puzzle to researchers,and become a bottleneck in the study.In this article,the authors made a review of the methods for dating Yardang landform.Then,we made a testing of the methods by applying some of them to date the Yardang landform in the Dunhuang Yardang National Geo-park.Our results suggested that the Yardang landform was formed in a period not later than 10kaBP and not earlier than 39 kaBP.At last,we prospect the direction of the yardang formation chronology research.

关 键 词：雅丹地貌 形成年代 风蚀 敦煌雅丹国家地质公园 

分 类 号：P531[天文地球—古生物学与地层学]