1. Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China Institute of Technology, Nanchang 330013, China 2. College of Earth Sciences, East China Institute of Technology, Fuzhou 344000, China 3. Jiangxi Province Key Lab for Digital Land, East China Institute of Technology, Fuzhou 344000, China
Abstract：Rock spectrum research is the base of the remote sensing geology. It’s of great significance of exploring the relations between rock spectrum and other rock natures. In the present study, 36 fine crushed lava samples each measuring 5 cm×5 cm×5 cm were tested for its spectrums by SVC HR-768 portable spectrometer. But before measuring each sample, white boards should be calibrated and after measuring the curves of spectrum of each sample should make a 5 nm smooth resample so that meteoric water and noise caused by external environment can be eliminated. After such smooth resample, at the spectrum scope of 1 112~1 322 nm, taking band value as horizontal axis and reflectivity as vertical axis, linear equations of rock samples can be obtained. Taking the slopes as the horizontal axis and volume magnetic susceptibility as vertical axis, y=-0.256 3ln(x)+0.913 7 was thus obtained and its equation correlation coefficient is up to 0.78. The result shows that volume magnetic susceptibility is mainly caused by Fe2+, and that the amount of Fe2+ can be almost measured in the spectrum scope of 1 112~1 322 nm that has a good correlation with volume magnetic susceptibility.
[1] ZHAO Ying-shi(赵英时). The Principal and Method of Analysis of Remote Sensing Application(遥感应用分析原理与方法). Beijing: Science Press(北京：科学出版社), 2002. [2] SU Yi-ming, LI Xiang-qian, ZHU Ye-fei(苏一鸣，李向前，朱叶飞). Jiangsu Geology(地质学刊), 2009, 33(1): 84. [3] HAN Ling, BU Xiao-cui(韩 玲，卜晓翠). Remote Sensing Technology and Application(遥感技术与应用), 2007, 22(6): 696. [4] YAO Fo-jun, ZHANG Yu-jun, YANG Jian-min, et al(姚佛军，张玉君，杨间民，等). Mineral Deposits(矿床地质), 2012, 31(4): 881. [5] BAO An-ming, WU Zhong-ying(包安明，吴中莹). Arid Land Geography(干旱区地理), 1993, 16(3): 64. [6] LI Jun-hua, WU Wei, HE Yan, et al(李军华，吴 炜，何 艳，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2013, 33(1): 85. [7] GUAN Zhi-ning(管志宁). Magnetic Field and Magnetic Exploration(地磁场与磁力勘探). Beijing: Geological Publishing Press(北京: 地质出版社), 2009. [8] DENG Ru-ru, HE Ying-qing, QIN Yan(邓孺孺，何颖清，秦 雁，等). Journal of Remote Sensing(遥感学报), 2012, 16(1): 192. [9] WAN Yu-qing, ZHANG Feng-yu, YAN Yong-zhong(万余庆，张凤雨，闫永忠). Geo-Information Science(地球信息科学), 2001, 3: 54. [10] ZHANG Wan-liang(张万良). Geology in China(中国地质), 2005, 32(4): 548. [11] ZHOU Xiao-hua, WANG Zhu-ning(周肖华，王祝宁). Uranium Geology(铀矿地质), 2012, 28(2): 72. [12] LIU Jian-ming, CHEN Jian-ping(刘建明，陈建平). Advance in Earth Sciences(地球科学进展), 1995, 10(2): 205.
