Characteristics of Regional Tectonic Movement of Dunhuang Yardang Area in Late Pleistocene

doi:10.7522/j.issn.1000-694X.2017.00044

Journal of Desert Research ›› 2018, Vol. 38 ›› Issue (4): 739-746.DOI: 10.7522/j.issn.1000-694X.2017.00044

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Characteristics of Regional Tectonic Movement of Dunhuang Yardang Area in Late Pleistocene

Wang Yanjie¹, Wu Fadong², Zhang Tingting³, Chu Hao²

1. School of Tourism, Hebei University of Economics and Business, Shijiazhuang 050061, China;
2. School of Earth Science and Resources, China University of Geosciences, Beijing 100083, China;
3. Qinghai Bureau of Environmentally Geological Survey, Xining 810007, China

Received:2017-05-04 Revised:2017-06-16 Online:2018-07-20 Published:2018-11-06

Abstract

Abstract: River terraces and active faults are excellent evidence for regional tectonic movement. In this paper, river terraces and active faults in Dunhuang Yardang area were studied. By fault gouge dating and comparison with regional neotectonic movements, characteristics and mechanism of tectonic movement in Late Pleistocene were detailed. The study area was affected evidently by regional neotectonic movement since Late Pleistocene, especially by the Arkin Faults and Beishan Faults. Combining field investigation and dating, the paper arrived at conclusions as follows:there has been three stages of intermittent tectonic uplift since 100 kyr BP, the first stage happened at about 100 kyr BP, with the lowest fierceness; the second stage happened at about 70 kyr BP, which was the fiercest; and the third stage happened at about 40 kyr BP.

Key words: neotectonic movement, Yardang landform, tectonic characteristics, Late Pleistocene

CLC Number:

P531

Wang Yanjie, Wu Fadong, Zhang Tingting, Chu Hao. Characteristics of Regional Tectonic Movement of Dunhuang Yardang Area in Late Pleistocene[J]. Journal of Desert Research, 2018, 38(4): 739-746.

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Characteristics of Regional Tectonic Movement of Dunhuang Yardang Area in Late Pleistocene

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