地理学报 ›› 1987, Vol. 42 ›› Issue (1): 1-15.doi: 10.11821/xb198701001

• 论文 •    下一篇

杭嘉湖平原全新世沉积环境的演变

严钦尚, 黄山   

  1. 华东师范大学地理系
  • 出版日期:1987-01-15 发布日期:1987-01-15

EVOLUTION OF HOLOCENE SEDIMENTARY ENVIRONMENT IN THE HANGZHOU-JIAXING-HUZHOU PLAIN

Yan Qinshang, Huang Shan   

  1. Department of Geography, East China Normal University
  • Online:1987-01-15 Published:1987-01-15

摘要: 通过分析钻孔资料了解,杭嘉湖平原全新世沉积之下,有两层硬土层。上层硬土层的顶板为本区全新世沉积的下限。晚更新世末,本区为缓起伏的丘陵、台地。南缘为古钱江谷地;西侧(湖州至杭州之间)为古钱江的一条支谷,呈南北向。在这个基础上,全新世早、中期海侵时南缘成为海湾,西侧为河口湾。海侵最盛期时,全区除小块区域外,多属潮坪或潟湖。全新世晚期,西侧的河口湾淤浅阻塞,全区被淤积为淡水湖沼平原。

关键词: 杭嘉湖平原, 全新世沉积, 环境演变

Abstract: This paper tackles this problem based upon a variety of sedimentological evidence, such as paleomicrofauna, pollen and spores, sediment grain size, sedimentary structure, heavy mineral content and 14C radio-carbon dates. These data were mainly, in conjunction with nearly 200 subsurface drilling cores available in this area, collected from seven newly drilled cores at Gou-ting, Gaoqiao and Shuanlin etc.

Key words: Hangzhou-Jiaxin-Huzhou Plain, Holocenesedimentary, Environment evolution