干旱区生态环境知识资源中心(Arid): 柴达木盆地鸭湖地区水上雅丹地貌成因研究

Arid

	柴达木盆地鸭湖地区水上雅丹地貌成因研究
其他题名	Research on the Genesis of Semi-submerged Yardang Landform in the Duck Lake Area of Qaidam Basin
	毛晓长 1; 刘祥 2; 董颖 3; 拜永山 4; 徐亚东 2; 宋博文 5
来源期刊	地质论评
ISSN	0371-5736
出版年	2018
卷号	64 期号:6 页码:1505-1518
中文摘要	本文通过对青海柴达木盆地鸭湖地区构成水上雅丹的地层序列和沉积相、地层形成时代、地层形成后演化为雅丹地貌的构造条件、气候条件和人为因素的研究,认为构成研究区水上雅丹的地层为中新世上油砂山组,所含介形虫组合指示其形成时代为中新世晚期;沉积相和孢粉组合分析揭示本区在中新世晚期为温暖干旱的气候下的古湖环境,接受湖相和湖泊三角洲前缘沉积;上新世在区域构造抬升和干旱化气候的双重作用下,古湖逐渐萎缩;更新世在极端干旱和强劲的季风环境中,被抬升到地表的上油沙山组上部地层在风蚀为主的外营力作用下形成雅丹;晚更新世末期全新世由于末次间冰期的到来,气候转向温暖湿润,湖水再次入侵。近年人类活动改变了湖泊分布格局,导致湖泊淹没了部分陆地上的雅丹,呈现为奇特的水上雅丹地貌景观。
英文摘要	Through the study of the stratigraphic sequence,sedimentary facies,formation age of the strata that make up Semi-submerged Yardang landform and the tectonic conditions,climate and human factors of the evolution of Yardang landform after the formation of stratigraphic in the Duck Lake area of Qaidam Basin in Qinghai Province,the formation of Semi-submerged Yardang landform in the study area is the Miocene Upper Youshashan Formation,and the ostracod assemblages indicate that the formation age is late Miocene. The analysis of sedimentary facies and sporo-pollen assemblages reveal that this area was warm and arid climate in late Miocene and it was covered by the ancient lake and accepted lacustrine facies and lacustrine delta front facies sedimentary. In the Pliocene,the ancient lake shrank and disappeared under the dual role of regional tectonic uplift and arid climate. Pleistocene in extreme drought and strong monsoon environments,the upper strata of the Upper Youshashan Formation was lifted up to the surface,formed Yardang landform under the action of wind erosion-dominated external forces. From late Pleistocene to early Holocene due to the arrival of the last interglacial,the climate turned warm and moist,and the lake invaded to form three lakes. In recent years,the distribution pattern of lakes has been changed under the action of human activities,which presents the landscape of today’s Duck Lake. Today,the lake area of Duck Lake drowns some Yardang and becomes a peculiar Semi-submerged Yardang landform landscape.
中文关键词	水上雅丹 ; 成因 ; 地貌演化 ; 上油砂山组 ; 柴达木盆地
英文关键词	semi-submerged Yardang genesis geomorphic evolution Upper Youshashan Formation Qaidam Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6364763
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237472
作者单位	1.中国地质调查局, 北京 100037, 中国; 2.中国地质大学(武汉)地球科学学院, 武汉, 湖北 430074, 中国; 3.中国地质环境监测院, 北京 100081, 中国; 4.青海省地质调查院, 西宁, 青海 810012, 中国; 5.中国地质大学(武汉)地质调查研究院, 武汉, 湖北 430074, 中国
推荐引用方式 GB/T 7714	毛晓长,刘祥,董颖,等. 柴达木盆地鸭湖地区水上雅丹地貌成因研究[J],2018,64(6):1505-1518.
APA	毛晓长,刘祥,董颖,拜永山,徐亚东,&宋博文.(2018).柴达木盆地鸭湖地区水上雅丹地貌成因研究.地质论评,64(6),1505-1518.
MLA	毛晓长,et al."柴达木盆地鸭湖地区水上雅丹地貌成因研究".地质论评 64.6(2018):1505-1518.