甘肃东部的泾河流域是华北黄土高原的一部分,因其在陇山(六盘山)以东,常被单独称为陇东黄土高原。这里黄土沉积厚达百米,又有保存良好的塬面地形,其黄土地层的划分一直为研究者所注目。近年来,在陇东北部黄土塬梁下部的淡肉红色黄土中,陆续发现一些属于早更新世的哺乳动物化石地点(图1)。 The Jinghe River basin in the east of Gansu is a part of the Loess Plateau in North China. It is often referred to as the Longdong Loess Plateau alone because it is east of Longshan (Liupan Mountain). Here loess sediment thickness of up to 100 meters, there are well-preserved plateau topography, the division of loess strata has been the researchers attention. In recent years, a number of mammalian fossil sites belonging to the early Pleistocene have been found successively in light-eaten red loess under the loess plateau in northern Longdong (Figure 1).