| 河北白洋淀全新统沉积特征与地层划分 |
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| 关键词:Baiyang Dian Holocene sedimentary characteristics stratigraphic division grain size bivalve |
| 基金项目:中国地质调查局地质调查项目(编号: 1212011120142; 12120113005600) |
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| Sedimentary Characteristics and Stratigraphic Division of Holocene Series in Baiyang Dian, Hebei Provence |
| Through a comprehensive study of the lithology, stratigraphic sequence, grain sizes, and microfossil assemblages of sediments from Laohetou section in Baiyang Dian, Hebei Province, the authors reconstructed the Holocene environmental evolution in Baiyang Dian. During the early Holocene, the climate conditions became cold and wet. Limnological conditions changed significantly after middle Holocene, and then lake retreated at the late stage of the Holocene. Based on the analysis of sedimentary features, environmental evolution and AMS14C dating data of Laohetou section in Baiyang Dian, the authors detected significant variation in sediments of Laohetou section related to sedimentary facies and climate change. Holocene Series in Baiyang Dian can be divided into three stages. Early Holocene (11000–8500 a) was alluvial and limnological facies of yellow silty clay, silty sand; Middle Holocene (8500–3200 a) was a climate optimum for the development of limnological facies of black clay and clayey silt; Late Holocene (3200 a~) was characterized by the development of alluvial, swamp facies. Middle Holocene contains black clay deposits in Baiyang Dian and provides a basis for the Holocene division and regional correlation in North China. |
| WANG Yong,MIN Long-rui,DONG Jin,YAO Pei-yi,CHI Zhen-qing.2015.Sedimentary Characteristics and Stratigraphic Division of Holocene Series in Baiyang Dian, Hebei Provence[J].Acta Geoscientica Sinica,36(5):575-582. |
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