| 萨拉乌苏组的沉积环境及地层划分问题 |
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| 引用本文： | 袁宝印.萨拉乌苏组的沉积环境及地层划分问题[J].地质科学,1978,13(3):220-234. |
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| 作者姓名： | 袁宝印 |
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| 摘 要： | 鄂尔多斯高原东南部,萨拉乌苏河两岸广泛出露巨厚的第四纪河湖相沉积,自其中发现丰富的哺乳动物化石以来,便成为华北晚更新世标准地层之一,命名为萨拉乌苏组。但以前多偏重于化石和石器的研究,并将这套巨厚的河湖相沉积笼统地划为晚更新世。这种情况已远远不能满足当前生产和科研发展的要求,迫切需要从沉积物特征、沉积环境、古气候等不同角度对该地层做进一步的详细划分。作者曾有机会参加萨拉乌苏河流域第四纪地质调查及古脊椎动物化石的发掘工作。
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SEDIMENTARY ENVIRONMENT AND STRATIGRAPHICAL SUBDIVISION OF SJARA OSSO-GOL FORMATION |
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| Yuan Baoyin.SEDIMENTARY ENVIRONMENT AND STRATIGRAPHICAL SUBDIVISION OF SJARA OSSO-GOL FORMATION[J].Chinese Journal of Geology,1978,13(3):220-234. |
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| Authors: | Yuan Baoyin |
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| Abstract: | A suite of specimens from the Quaternary of the Dagouv/an area along the Sjara Osso-Gol river has been analyzed for sporo-pollen content, water soluble salt and gra-nulometric composition. Basing upon the laboratory data and the studies of faunas and palaeoliths found from this region, this paper proposes to divide the past Sjara Osso-Gol formation into three parts.1. The Lower Sjara Osso-Gol formation consisting mainly of lacustrine deposit formed under mild climatic condition, middle Late Pleistocene in age.2. The Upper Sjara Osso-Gol formation comprising mainly alluvial deposit accumulated under dry-cold climatic condition, upper Late Pleistocene in age.3. The Dagouwan formation - made up mainly of lake-swamp deposit laid down in warm humid climatic environment, Early Holocene in age.Judging from the age of these units the lower and upper Sjara Osso-Gol may be considered as being synchronous with the Malan loess but they are of different facies. |
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