鄂尔多斯盆地西南缘上奥陶统平凉组砂岩微量元素特征及构造背景: 以陇县段家峡剖面为例*
刘朱睿鸷1,2, 何幼斌2, 李华2, 黄伟2

Geochemical characteristics of trace elements and tectonic setting of sandstones from the Upper Ordovician Pingliang Formation, southwestern margin of Ordos Basin: A case study of the Duanjiaxia profile, Longxian County
Liuzhu Rui-Zhi1,2, He You-Bin2, Li Hua2, Huang Wei2
陕西陇县段家峡剖面上奥陶统平凉组砂岩源岩特征判别图解 a—La/Yb-REE图解(据 Allègre,1978 );b—La/Th-Hf图解(据 Floyed and Leveridge,1987 );c—Co/Th-La/Sc图解(据 Gu et al ., 2002 )