| 摘要: |
| 祁连山西段地处青藏高原西北缘,自更新世以来的环境变迁是青藏高原隆升过程的环境响应。笔者根据对CaCO3、古地磁、孢粉等资料的分析,初步划分了12个寒冷期和12个温暖期,并根据气候变迁的研究,认为青藏高原隆升至少有三次加速时期。 |
| 关键词: 第四纪 环境变迁 祁连山西段 甘肃 |
| DOI： |
| 附件 |
| 投稿时间：2002-09-12 |
| 基金项目: |
|
| Quaternary environmental changes in western Qilian Mountains, Gansu |
| LI Qi-lin, WANG Xiao-wei |
| (Gansu Bureau of Geology and Mineral Resources, Lanzhou 730050, Gansu, China) |
| Abstract: |
| The western segment of the Qilian Mountains is situated on the northwestern margin of the Qinghai-Xizang Plateau. The environmental changes since the Pleistocene represent the environmental responses to the uplift of the Plateau. In the light of CaCO3 contents, paleomagnetic and sporopollen data, twelve climatic stages of cold and warm have been established, respectively for the study area. In addition, at least three phases of the accelerated uplifting of the Plateau are recognized:the early Early Pleistocene, early Middle Pleistocene-late Early Pleistocene and Late Pleistocene-Holocene. |
| Key words: Quaternary environmental change western Qilian Mountains Gansu |
