| 对华北山地低山麓面形成时代之新认识 |
| |
| 引用本文： | 吴忱.对华北山地低山麓面形成时代之新认识[J].地理与地理信息科学,2004,20(2):105-108. |
| |
| 作者姓名： | 吴忱 |
| |
| 作者单位： | 河北省地理科学研究所,河北,石家庄,050011 |
| |
| 基金项目： | 国家自然科学基金资助项目(49371008),河北省自然科学基金资助项目(494197) |
| |
| 摘 要： | 华北山地太行山东麓和燕山南麓的低山麓面比较发育。前人研究成果中,均把其与地文期中的"××期侵蚀"对比,形成于晚上新世。但不少研究资料表明,它向山地内部延伸,逐渐以喇叭口状收缩与河流谷地内的第三级阶地面相连。低山麓面和阶地面上的组成物质是红色砂、粘土砾石和红色土。古生物化石和测年数据表明其形成于中更新世。因此,它与地文期中的"××期侵蚀"是不同时期的面,二者不能对比。
|
| 关 键 词： | 华北山地 低山麓面 第三级阶地面 形成时代 |
| 文章编号： | 1672-0504(2004)02-0105-04 |
| 修稿时间： | 2003年9月27日 |
Discussion on Formation Times of the Low Piedmont Surface in the Mountain Land of North China |
| |
| WU Chen.Discussion on Formation Times of the Low Piedmont Surface in the Mountain Land of North China[J].Geography and Geo-Information Science,2004,20(2):105-108. |
| |
| Authors: | WU Chen |
| |
| Abstract: | It is development of the low piedmont surface in East Taihang Mountain and South Yan Mountain which belong to the mountain land of North China. In the former studies,it is always been compared with the erosion of some period in Physiographic Time,as a result,it is formed in the late Pliocene.But some studies show that it extends into the mountain land,shrinks to the shape of trumpet to link up with the third terrace in the river valley.The low piedmont surface and the terrace are composed with red sand,clay gravel and red soil.The biological fossil and age measurement data also indicate that the low piedmont surface is formed in Epipleistocene.So,it is formed in the different period with the erosion of some period in Physiographic Time. |
| |
| Keywords: | the mountain land of North China the low piedmont surface the third terrace in the river valley formation times |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
