Discovery and Significance of Malan Loess on the Piedmont Plain in Pinggu District, Beijing

doi:10.1111/1755-6724.12319

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质科学院矿产资源研究所

	Discovery and Significance of Malan Loess on the Piedmont Plain in Pinggu District, Beijing
	Lu Lui 1; Zhao YuanYi ; Wang XiaoLiang 2; Zhao XiTao 3; Yang ZhenJing 4; Wang ChengMin 4; Bi ZhiWei 4; Lu WenHui 5
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2014
卷号	88 期号:5 页码:1565-1578
关键词	eolian loess Malan loess formation environment Pinggu
ISSN号	1000-9515
DOI	10.1111/1755-6724.12319
英文摘要	The platforms on both sides of the Malangou River (a lateral ditch of the Qingshui River that is a tributary of the Yongding River) where Malan Village in Zhaitang Town of Mentougou District of Beijing is located are the place of China's typical section of the Quaternary Malan loess. During the investigation in the eastern suburbs of Beijing City, the authors not only clarified 5 grades of terraces on the Pinggu piedmont plain, but also found a clayey silt section mixed with a small amount of alluvial-diluvial gravel layers at a height of 15-25 m above the river level near a Fishpond in Xinli Village of Nandule Town. Results of the study of grain size of the section document that the loess mostly is silty soil (0.05-0.005 mm), and that the grain size probability cumulative curves of the section are dominated by single-peak, coarse-grained segment I and coarse-grained segment II types, reflecting that its depositional environment is similar to eolian phase. Identification results of heavy minerals from the section show that their contents account for 0.01%-0.11%, averaging 0.04%. There are 24 kinds of heavy minerals, most of which are stable heavy minerals, and the clay minerals mostly are illite, which is consistent with the Malan loess on the Loess Plateau. The chemical composition data reflect that the source area of the loess is relatively arid. The six grade classification of sporopollen in the section further shows the subdivision of the history of alternating warm and humid phases in this geological period. The thermoluminescence dating results range from 21.0 ka to 59.2 ka, convincingly demonstrating that the section indeed consists of Malan loess. The above studies provide a new basis for overall understanding of the distribution of the Malan loess at the northeast margin of the North China Plain and its environment change in the Late Pleistocene.
学科主题	第四纪地质
WOS关键词	CHINESE LOESS ; PLATEAU ; SEDIMENTS ; MARGIN ; HOLOCENE ; PALEOSOL ; RIVER
WOS研究方向	Geology
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000344450500023
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40392]
专题	中国地质科学院矿产资源研究所
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 2.Beijing Inst Geol, Beijing 100120, Peoples R China 3.Liaoning Inst Geol & Mineral Resources, Shenyang 110032, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 5.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Peoples R China 6.Gansu Prov Bur Geol & Mineral, Geol & Mineral Explorat Inst 3, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Lu Lui,Zhao YuanYi,Wang XiaoLiang,et al. Discovery and Significance of Malan Loess on the Piedmont Plain in Pinggu District, Beijing[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2014,88(5):1565-1578.
APA	Lu Lui.,Zhao YuanYi.,Wang XiaoLiang.,Zhao XiTao.,Yang ZhenJing.,...&Lu WenHui.(2014).Discovery and Significance of Malan Loess on the Piedmont Plain in Pinggu District, Beijing.ACTA GEOLOGICA SINICA-ENGLISH EDITION,88(5),1565-1578.
MLA	Lu Lui,et al."Discovery and Significance of Malan Loess on the Piedmont Plain in Pinggu District, Beijing".ACTA GEOLOGICA SINICA-ENGLISH EDITION 88.5(2014):1565-1578.