| A STUDY ON THE PLEISTOCENE STRATA AND THEIR DEPOSITIONAL ENVIRONMENT ON THE SONGLIAO PLAIN OF NORTHEAST CHINA |
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| 引用本文： | 裘善文,夏玉梅,汪佩芳,李凤华. A STUDY ON THE PLEISTOCENE STRATA AND THEIR DEPOSITIONAL ENVIRONMENT ON THE SONGLIAO PLAIN OF NORTHEAST CHINA[J]. 中国科学B辑(英文版), 1989, 0(8) |
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| 作者姓名： | 裘善文 夏玉梅 汪佩芳 李凤华 |
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| 作者单位： | Changchun Institute of Geography，Academia Sinica，Changchun Institute of Geography，Academia Sinica，Changchun Institute of Geography，Academia Sinica，Changchun Institute of Geography，Academia Sinica |
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| 基金项目： | the National Natural Science Foundation of China. |
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| 摘 要： | This paper deals with the Pleistocene strata and their depositional environment on theSongliao Plain of Northeast China by applying determinative and analytic techniques of spore-pollen, magnetic stratigraphy, clay minerals, isotopic dating, sedimentary facies, etc. Resultsshow that the underlying sand gravel layer below 75-80 m in depth in the central plain belongsto the alluvial-lacustrine deposits with a time range of 2.48-1.87 Ma, known as the lowerlimit of the Quaternary. As to the massive clay layer, its lower part, 40-30 m thick, belongsto the middle late period of the early Pleistocene, ranging from 2.01-0.73 Ma, while its upperpart, 25-21 m thick, belongs to the middle Pleistocene, ranging from 0.73-20 Ma, with amean sedimentation rate of 3-4 mm/1000a under the big lake, long-range gentle and steadydepositional environment.
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A STUDY ON THE PLEISTOCENE STRATA AND THEIR DEPOSITIONAL ENVIRONMENT ON THE SONGLIAO PLAIN OF NORTHEAST CHINA |
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| QIU SHAN-WEN,XIA YU-MEI,WANG PEI-FANG,LI FENG-HUA Changchun Institute of Geography,Academia Sinica. A STUDY ON THE PLEISTOCENE STRATA AND THEIR DEPOSITIONAL ENVIRONMENT ON THE SONGLIAO PLAIN OF NORTHEAST CHINA[J]. Science in China(Chemistry), 1989, 0(8) |
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| Authors: | QIU SHAN-WEN XIA YU-MEI WANG PEI-FANG LI FENG-HUA Changchun Institute of Geography Academia Sinica |
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| Abstract: | This paper deals with the Pleistocene strata and their depositional environment on theSongliao Plain of Northeast China by applying determinative and analytic techniques of spore-pollen, magnetic stratigraphy, clay minerals, isotopic dating, sedimentary facies, etc. Resultsshow that the underlying sand gravel layer below 75-80 m in depth in the central plain belongsto the alluvial-lacustrine deposits with a time range of 2.48-1.87 Ma, known as the lowerlimit of the Quaternary. As to the massive clay layer, its lower part, 40-30 m thick, belongsto the middle late period of the early Pleistocene, ranging from 2.01-0.73 Ma, while its upperpart, 25-21 m thick, belongs to the middle Pleistocene, ranging from 0.73-20 Ma, with amean sedimentation rate of 3-4 mm/1000a under the big lake, long-range gentle and steadydepositional environment. |
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| Keywords: | Songliao Plain Pleistocene strata depositional environment |
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