江西红层及其地貌景观的发育特征研究.PDFVIP

第4卷 第11期 2009 年 11 月 中国科技论文在线 Sciencepaper Online 819 江西红层及其地貌景观的发育特征研究 杨庆坤 1，郭福生 1，姜勇彪 1，黄强太 2 （1.东华理工大学，江西抚州 344000；2.中国科学院广州地球化学研究所，广州 510640） 摘 要：江西省境内红层分布时代以侏罗纪—第三纪最多，占 80%左右。绝大部分为陆相沉积，仅在瑞昌、湖口、武 宁和都昌一带出露有海相沉积。省内盆地多为红盆，岩性以砂砾岩为主，其次为砾岩和砂岩，胶结物以钙质和铁质为 主。盆地边缘粒度较粗，向盆地中心粒度变细。通过调查研究，现已发现的省内 200 余处丹霞地貌景观主要分布在省 内的 15 个红盆中，在外部动力作用下，形成南方亚热带气候典型的丹霞地貌特征。 关键词：红层；红盆；丹霞地貌；成景地层 中图分类号：P531 文献标识码：A 文章编号：1673－7180(2009)11－0819－5 Research on red beds and landform sceneries in Jiangxi province Yang Qingkun1，Guo Fusheng1，Jiang Yongbiao1，Huang Qangtai2 (1. East China Institute of Technology, Fuzhou, Jiangxi 344000, China; 2. Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640, China) Abstract: Most of the red beds in Jiangxi province are Jurassic - Tertiary red layers, accounting for about 80%. Among them, most are continental deposits, with marine deposits exposed only in Ruichang, Hukou, Duchang and Wuning. Basins in Jiangxi province mostly are red basins dominated by sandy conglomerate, and some conglomerate and sandstone with calcareous and ferruginous cementation. Coarse granularity at the edge of the basin gradually becomes finer at the center. Through investigation and study, more than 200 Danxia landform sceneries in the province are mainly distributed in 15 red basins. Typical Danxia landform features under the southern subtropical climate are formed due to the action of external power. Key words: red beds; red basi