川南兴文地区上二叠统龙潭组下部稀土元素富集特征
何洋飘1,2, 梁斌1,2,*, 郝雪峰2, 唐屹2, 付小方2, 彭宇2

REE enrichment characteristics in the lower part of Upper Permian Longtan Formation in Xingwen area of Southern Sichuan Province
HE Yangpiao1,2, LIANG Bin1,2, HAO Xuefeng2, TANG Yi2, FU Xiaofang2, PENG Yu2
研究区典型岩(矿)石XRD图像