Arid
DOI10.1016/j.jseaes.2016.06.006
Heavy-mineral analysis and provenance of Yellow River sediments around the China Loess Plateau
Pan, Baotian1; Pang, Hongli1; Gao, Hongshan1; Garzanti, Eduardo2; Zou, Yu1; Liu, Xiaopeng1; Li, Fuqiang1; Jia, Yunxia1
通讯作者Pang, Hongli
来源期刊JOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
EISSN1878-5786
出版年2016
卷号127页码:1-11
英文摘要

In its upper-middle reaches the Yellow River has high sand contents after traversing through large areas of desert and the China Loess Plateau. Understanding riverbed sediment composition in the channel is critical for the interpretation of the potential provenance, aeolian sand transport and the linkage between the Loess Plateau and the Yellow River. To address these issues, we collected 52 samples from the modern riverbed, proximal deserts, and major tributaries and used analyses of grain size, grain morphology, and heavy-mineral compositions, to establish the spatial distribution and characteristics of source regions and riverbed sediments. The heavy-mineral assemblages demonstrate significant variations for the different sections of the Yellow River. The riverbed samples from the upper reach are dominated by opaque minerals (limonite and magnetite), amphibole and epidote, with minor zircon, tourmaline and rutile. Riverbed sediments from the middle reach are garnet-rich, reflecting the widespread distribution of Mesozoic sandstones. This variability closely reflects the source regions. Our data show that seasonal tributaries (the "Ten Great Gullies") carrying detritus from the Ordos Plateau may account for the localized high garnet concentrations in the Inner Mongolia section of the upper reach. Scanning electron microscope (SEM) imaging of quartz grains show that the river sediments are characterized by composite microtextures acquired in both fluvial and eolian environments of the Hedong, Ulan Buh and Kubuq Deserts. The mineralogical composition in the upper reach (Lanzhou-Yinchuan) is similar to that of sediments in the Loess Plateau and Northeast Tibet Plateau (Western Lanzhou). However, the composition differs markedly from that in the Inner Mongolia section of the upper and middle reaches. This variation indicates that in the upper reach the Northeast Tibet Plateau contributes significant volumes of sediment to the Yellow River and Loess Plateau, but compositions change across the Inner Mongolia section of the upper and middle reaches owing to local sediment supply from arid desert areas and seasonal tributaries. (C) 2016 Elsevier Ltd. All rights reserved.


英文关键词Heavy minerals Quartz grain morphology Provenance Yellow River (Huang He)
类型Article
语种英语
国家Peoples R China ; Italy
收录类别SCI-E
WOS记录号WOS:000381323400001
WOS关键词SCANNING-ELECTRON-MICROSCOPY ; SURFACE TEXTURAL ANALYSIS ; ENVIRONMENTAL INTERPRETATION ; SUSPENDED SEDIMENT ; DETRITAL MINERALS ; CLIMATE-CHANGE ; QUARTZ GRAINS ; SAND ; REACH ; DEPOSITION
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/194233
作者单位1.Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China;
2.Univ Milano Bicocca, Dept Earth & Environm Sci, I-20126 Milan, Italy
推荐引用方式
GB/T 7714
Pan, Baotian,Pang, Hongli,Gao, Hongshan,et al. Heavy-mineral analysis and provenance of Yellow River sediments around the China Loess Plateau[J],2016,127:1-11.
APA Pan, Baotian.,Pang, Hongli.,Gao, Hongshan.,Garzanti, Eduardo.,Zou, Yu.,...&Jia, Yunxia.(2016).Heavy-mineral analysis and provenance of Yellow River sediments around the China Loess Plateau.JOURNAL OF ASIAN EARTH SCIENCES,127,1-11.
MLA Pan, Baotian,et al."Heavy-mineral analysis and provenance of Yellow River sediments around the China Loess Plateau".JOURNAL OF ASIAN EARTH SCIENCES 127(2016):1-11.
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