| 黄河中游全新世黄土 |
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| 引用本文： | 郑洪汉.黄河中游全新世黄土[J].地球化学,1984(3):237-246. |
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| 作者姓名： | 郑洪汉 |
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| 摘 要： | Holocene loess in the Middle Huanghe Valley can be subdivided into 3 formations which are composed commonly of upper loess and lower dark loessial soil (a kind of paleosol) : the Xifeng Formation of Late Holocene, the Longxi Formation of Middle Holocene and the Luochuan Formation of Early Holocene. The layers of dark loessial soil at similar stratigraphic levels in different localities show such a change in age that samples from south are older than those from north, indicating a northward shift of the climate, belt during pedogenesis.
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| 关 键 词： | 全新世 黄土 黄河 黑垆土 |
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