Near Infrared Spectrum Analysis and Meaning of the Soil in 512 Earthquake Surface Rupture Zone in Pingtong, Sichuan
YI Ze-bang1,2, CAO Jian-jin1,2*, LUO Song-ying1,2，WANG Zheng-yang1,2, LIAO Yi-peng1,2
1. School of Earth Science, Sun Yat-sen University, Guangzhou 510275, China 2. Key Lab of Geological Process and Mineral Resources Expedition of Guangdong Province, Guangzhou 510275, China
Abstract：Through modern near infrared spectrum, the authors analyzed the yellow soil from the rupture zone located in Pingtong town，Pingwu, Sichuan province. By rapid identification of the characteristic of peak absorption of mineral particles, the result shows that the soil samples mainly composed of calcite, dolomite, muscovite, sericite, illite, smectite, talc, tremolite, actinolite, chlorite, etc. And the mineral compositions of the soil is basically the same with the yellow soil in Sichuan region. By analyzing and comparing it was revealed that part of mineral compositions of the soil are in accordance with the characteristics of the rock mineral compositions below the rupture zone, indicating that part of the minerals of the soil’s evolution is closely related to the rock compositions in this area; and the compositions of the clay mineral in the rupture zone is similar to the Ma Lan loess in the north of China, so it is presumed that the clay minerals in these two kinds of soil have the same genetic type. The characteristic of the mineral composition of the soil is in accordance with evolution characteristics of the rocks which is bellow the rupture zone, also it was demonstrated that the results of soil minerals near-infrared analysis can effectively analyze the mineral particles in the soil and indicate the pedogenic environment. Therefore, the result shows the feasibility of adopting modern near-nfrared spectrum for rapid analysis of mineral particles of the soil and research of geology. Meanwhile, the results can be the foundation of this region’s soil mineral analysis, and also provide new ideas and methods for the future research of soil minerals and the earthquake rupture zone.
易泽邦1,2，曹建劲1,2*，罗松英1,2，王正阳1,2，廖宜鹏1,2 . 四川平通512地震地表破裂带土壤近红外光谱分析及意义 [J]. 光谱学与光谱分析, 2014, 34(08): 2076-2080.
YI Ze-bang1,2, CAO Jian-jin1,2*, LUO Song-ying1,2，WANG Zheng-yang1,2, LIAO Yi-peng1,2 . Near Infrared Spectrum Analysis and Meaning of the Soil in 512 Earthquake Surface Rupture Zone in Pingtong, Sichuan. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(08): 2076-2080.
