祁连山东南缘基于RGMAP的数字化地貌研究

顾延生; 张旺生; 朱云海; 樊光明; 高山

Volume 28 Issue 4

Jul. 2003

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Article Navigation > Earth Science > 2003 > 28(4): 395-400

GU Yan-sheng, ZHANG Wang-sheng, ZHU Yun-hai, FAN Guang-ming, GAO Shan, 2003. Preliminary Digital Geomorphologic Research on Southeastern Margin of Qilian Mountains Based on RGMAP. Earth Science, 28(4): 395-400.

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Preliminary Digital Geomorphologic Research on Southeastern Margin of Qilian Mountains Based on RGMAP

1.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
School of Humanity, Wuhan University, Wuhan 430072, China

Received Date: 2003-04-18
Publish Date: 2003-07-25

Abstract

Abstract

The typical stratified landforms in the southeastern margin of the Qilian Mountains have been recognized and studied in detail on the basis of digital elevation model, field survey and tectonic- geomorphologic section as well as the indoor study with the support of the operation system of regional digital geological survey and field mapping (RGMAP). There are two stages of planation surfaces (P_I3 000 m, P_II4 000 m), eleven stages of pediments (Pe_1-11) and seven terraces (T₀-T₆) of the Huangshui River. Five terraces are developed in the Yellow River from the Yanguoxia to Bapanxia. Before the Yellow River mainstream passed through the Yanguoxia about 0.15 Ma, the Huangshui River used to be its upper reach. Combined with field survey and analyses indoors, every stages of stratified landforms (planation surfaces, pediments and terraces) are recognized, showing detailed features of distribution, sedimentary and formation ages and relation with neo-tectonic movements. This demonstrates that development of typical stratified landforms resulted from phased uplift of the Qinghai-Xizang plateau in Late Cenozoic.
- digital elevation model,
- typical stratified landform,
- planation surface,
- pediment,
- terrace

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References(13)

References

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