| 西秦岭泥盆纪古生物分区及古地理演变初探 |
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| 引用本文： | 李永军.西秦岭泥盆纪古生物分区及古地理演变初探[J].地球科学与环境学报,1988(3). |
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| 作者姓名： | 李永军 |
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| 作者单位： | 甘肃省地矿局第一地质队 |
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| 摘 要： | 依据西秦岭地区泥盆纪古生物及沉积相资料,本文将这一地区泥盆系划分为北秦岭生物区、华南生物区两个古生物区系,提出了北秦岭区沉积发展史以“D_m”事件为标志经历了两个重要阶段和古地理演变的四个期次,并认为大草滩群属华北大陆边缘沉积。
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| 关 键 词： | 西秦岭 泥盆纪 古生物分区 “D_m”事件 古地理演变 |
PRIMARY EXPLORATION ON THE PALAEOBIOLOGICAL DIVISON AND PALAEOGEOGRAPHIC EVOLUTION DURING THE DEVONIAN PERIOD IN THE WEST QINLING |
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| Li Yongjun.PRIMARY EXPLORATION ON THE PALAEOBIOLOGICAL DIVISON AND PALAEOGEOGRAPHIC EVOLUTION DURING THE DEVONIAN PERIOD IN THE WEST QINLING[J].Journal of Earth Sciences and Environment,1988(3). |
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| Authors: | Li Yongjun |
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| Institution: | The First Geological Team of Gansu Bureau of Geology and Mineral Resources |
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| Abstract: | According to the data on palaeobiology and sedimetary context during the Devonian period in the west Qinling region,this paper divided the Devonian System of this region into two palaeobiology region systems:the biological region of the North Qinling and the biological region of the South China. It suggested that the sediment development history of the North Qinling underwent two major stages and four Palaeogeography evolvement periods with the event "Dm" as a mark. The writer regards the Dacaotan Group as the sediments on the border of the North China's continent. |
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| Keywords: | West Qinling Devonian Palaeobiological division event "Dm" Palaeogcographical evolvement |
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