| 泥河湾盆地第四纪古湖最终消亡过程研究 |
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| 引用本文：吉云平,王贵玲.2017.泥河湾盆地第四纪古湖最终消亡过程研究[J].地球学报,38(s1):38-42. |
| DOI：10.3975/cagsb.2017.s1.11 |
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| 基金项目:国家自然科学基金项目(编号: 40901001); 中国地质调查局地质调查项目(编号: 1212011120147) |
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| 中文摘要:泥河湾盆地位于河北省西北部和山西省东北部, 行政区划隶属河北省张家口市阳原县和山西省大同市大同县及天镇县。盆地西至阳原县东井集乡, 东至石匣以东的桑干河峡谷, 北界为熊耳山, 南界为六棱山和凤凰山; 盆地东西长约80 km, 南北宽约15~20 km, 大致位于北纬39°55′—40°25′, 东经113°50′—114°50′, 面积达4 500 km2, 与阳原盆地的范围大致相同。盆地边缘是洪积扇和洪积平原, 中部是湖积冲积平原, 桑干河自西南向东北流经整个盆地。 |
| 中文关键词:泥河湾盆地 中—晚更新世 古气候 古环境 古湖演化 消亡模式 |
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| Final Disappearing Process of Ancient Lake during Quaternary in Nihewan Basin |
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| Abstract:Nihewan Basin located in the northwestern of Hebei Province and northeastern of Shanxi Province. The administrative division of Nihewan Basin belongs to Yangyuan County Zhangjiakou Hebei Province and Datong County - Tianzhen County Datong City Shanxi Province. The extent of the basin is west to Dongjingji rural area Yangyuan County, east to the Sanggan river valley-east of Shixia, north to Bear mountain, south to the Liuleng mountain and Phoenix mountain. Nihewan Basin is about 80 km long from east to west and 15 ~ 20 km wide from north to south, which generally located N39°55′–40°25′ and E113°50′–114°50′, with an area of 4 500 km2. The scope of Nihewan Basin was roughly the same scope of Yangyuan Basin. Pluvial fan and diluvial plain were developed along the basin edge and lacustrine and alluvial plain covered the central part of the basin. The Sanggan River flowed through the basin from southwest to northeast. |
| keywords:Nihewan Basin Middle–Late Pleistocene Palaeoclimate palaeoenvironment ancient lake revolution extinction pattern |
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