Li-Wei Kuo, NCU National Central University of Taiwan, Jhongli, Taiwan, Vladimir Luzin, Australian Nuclear Science & Technology Organisation, Bragg Institute, Lucas Heights, Australia, Ping-Chuan Chen, National Taiwan University, Department of Geosciences, Taipei, Taiwan, En-Chao Yeh, National Taiwan Normal Univ., Taipei, Taiwan, Ya-Ju Hsu, Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan, Kou-Fong Ma, National Central University, Earth Sciences, Taoyuan city, Taiwan and Sheng-Rong Song, Natl Taiwan Univ, Taipei, Taiwan