川东地区二叠系结核状、条带状及团块状硅岩成因*
周新平, 何幼斌, 罗进雄, 徐怀民
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Zhou Xinping, He Youbin, Luo Jinxiong, Xu Huaimin
古地理学报 . 2012, (2): 143 -154 .  DOI: 10.7605/gdlxb.2012.02.001