Abstract:Caliche is the sediment which formed on surface of gravel in drought and semi-drought environment and reflecting environment and climate change. It contains mo re integral environment and climate information, can be used to analyze palaeo-climate and dating the forming age. In this paper, it is considered that the shades of caliche micro-lamination record the process of climate change through the discussion of sedimental mechanism of the caliche, and it can be compaired with other dating methods, such as bathy-oxygen-iso-tope curve, loess-palaeosol sequence, loess-grain curve, palaeo-magnetic curve and tectonic events etc., therefore its forming age can be determined.The age of the caliche represents the age of landform surface where the caliche locates on. By using this method the ages of the high-terraces in Heishanxia, Yellow River, are re-determined.
