关键词: 华北平原, 晚更新世, 岩石地层, 生物地层, 气候地层, 地层层系

Abstract:

      Though many studies on the stratigraphy since the Late Pleistocene have been done in the North China Plain, the samples were very sparsity (usually 1 sample/2 m) for the reason of history,so the stratigraphic borderline is not fine and there are many questions on it. In this paper, the very dense sampling has been done in the boreholes of HG1 and HN1 in the North China Plain (1 sample/0.20 m in borehole HG1,1 sample/0.07 m in borehole HN1),¹⁴C dating of 17 samples had been determined in borehole HN1, the foraminifera of borehole HG1 had been identified in detail,and the foraminifera of borehole HN1 had also been studied in high resolution. Based on this information, the lithostratigraphy, biostratigraphy and climatic stratigraphy since Late Pleistocene in the North China Plain had been further studied, the age borderline between Holocene and Pleistocene of the North China Plain had been determined. At the same time, the standard Quaternary stratigraphic system of the North China Plain had been established on the basis of previous study.

Key words: the North China Plain, Late Pleistocene, lithostratigraphy, biostratigraphy, climatic stratigraphy, stratigraphic system