The paper put forward a new method of loess microstructure analysis to determine whether the loess seismic subsidence deformation to be strong or weak. In the dryer and colder climatic conditions of northwest of China, the loess microstructure formed in certain conditions changed by the special climate and desert surroundings. According to its chemical element ratio (such as Si/Al, Ca/Fe, K/Al, Ca/Mg) and seismic subsidence, we could divide them into four kinds of microstructures: strong shear deformation microstructure(I); strong compaction deformation microstructure(II); the medium seismic subsidence microstructure(III); the low seismic subsidence microstructure(IV). It could generally judgeand set deeply defense measures to seismic engineering.
Cite this paper
Wang, L. and Deng, J. (2013) The loess microstructure kinds and its seismic subsidence. Natural Science, 5, 792-795. doi: 10.4236/ns.2013.57095.
 Liu, D.S. (1985) Loess and environment. Beijing Science Press, Beijing, 1-207.
 Ding Z.L., Sun, J.M. and Rutter, N.W. (1999) Changes in sand of loess deposits along a North-South transect of the Chinese Loess Plateau and the implication for desert variation. Quaternary Research, 52, 56-62.
 Thomas, S., Imon, A.J. and Lu, H.Y. (2006) Sedimentation and diagenesis of Chinese loess implications for the preservation of continuous, high resolution climate re cords. Geology, 34, 849-852. doi:10.1130/G22472.1
 Wang, L.M. (2003) Loess dynamics. Earthquake Press, Beijing, 12-82.
 Deng, J., Wang, L.M. and Zhang, Z.Z. (2010) The loess microstructure characteristics and forming environment of late Quaternary Period in the Loess Plateau of China. Environmental Earth Sciences, 59, 1807-1817.
 Gao, G.-M. (1980) The loess miorostrtlcturets classification and its collapsible characteristics. Science of China, 12, 1203-1208.
 Deng, J., Wang, L.-M. and Zhang Z.Z. (2007) Micro structure characteristics and seismic subsidence of loess. Chinese Journal of Gentechnical Engineering, 27, 542-548.
 Wang, L.-M., Deng, J. and Huang Y. (2007) Quantitative analysis of microstructure of loess seismic subsidence. Chinese Journal of Rock Mechanics and Engineering, 26, 3025-3033.