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DOI | 10.1016/j.jop.2023.01.002 |
Grain-size and compositional variability of Yarlung Tsangpo sand (Xigaze transect, south Tibet): Implications for sediment mixing by fluvial and aeolian processes | |
Lai, Wen; Liang, Wen-Dong; Hu, Xiu-Mian; Garzanti, Eduardo; Lu, Hua-Yu; Dong, Xiao-Long | |
发表日期 | 2023 |
ISSN | 2095-3836 |
EISSN | 2524-4507 |
起始页码 | 195 |
结束页码 | 210 |
卷号 | 12期号:2 |
英文摘要 | Studying the grain-size dependent compositional variability in modern river sediments provides a key to decipher the information stored in the sedimentary archive and reconstruct the evolution of the Earth's surface in the past. Bedload sand along the Xigaze cross section of the Yarlung Tsangpo (upper Brahmaputra River) ranges in mean grain size from 0.72 0 to 3.21 0, is moderately to poorly sorted and slightly platykurtic to moderately leptokurtic with sub-angular to sub-spherical grains. Litho-feldspatho-quartzose to feldspatholitho-quartzose sand (Q 43%-65%; F 13%-44%; L 11%-28%) contains 3.4%-14.4% heavy minerals including amphibole (64%-89%), epidote (4%-11%), chloritoid (0-10%), and clinopyroxene (2%-6%). The marked textural and compositional variability observed across the Xigaze transect of the Yarlung Tsangpo mainstem is controlled by both fluvial and aeolian processes, including repeated reworking by westerly and glacial winds, as well as by local contributions from northern and southern tributaries draining the Lhasa Block and the Himalayan Belt, respectively. The modern sedimentary case here will shed new light on interpreting paleogeography and provenance. |
关键词 | Modern fl uvial sedimentsSand petrographyHeavy mineralsFluvialaeolian interactionsEndmember grain -size modelingLhasa BlockHimalayan Belt |
英文关键词 | FORE-ARC BASIN; ZIRCON U-PB; ZANGBO SUTURE ZONE; LHASA TERRANE; FORMATION MECHANISM; RIVER-BASIN; PROVENANCE; EVOLUTION; SUBDUCTION; PETROGENESIS |
WOS研究方向 | Geosciences, Multidisciplinary ; Paleontology |
WOS记录号 | WOS:000988588200001 |
来源期刊 | JOURNAL OF PALAEOGEOGRAPHY-ENGLISH
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/283535 |
作者单位 | Nanjing University; Chengdu University of Technology; Nanjing University; University of Milano-Bicocca |
推荐引用方式 GB/T 7714 | Lai, Wen,Liang, Wen-Dong,Hu, Xiu-Mian,et al. Grain-size and compositional variability of Yarlung Tsangpo sand (Xigaze transect, south Tibet): Implications for sediment mixing by fluvial and aeolian processes[J],2023,12(2). |
APA | Lai, Wen,Liang, Wen-Dong,Hu, Xiu-Mian,Garzanti, Eduardo,Lu, Hua-Yu,&Dong, Xiao-Long.(2023).Grain-size and compositional variability of Yarlung Tsangpo sand (Xigaze transect, south Tibet): Implications for sediment mixing by fluvial and aeolian processes.JOURNAL OF PALAEOGEOGRAPHY-ENGLISH,12(2). |
MLA | Lai, Wen,et al."Grain-size and compositional variability of Yarlung Tsangpo sand (Xigaze transect, south Tibet): Implications for sediment mixing by fluvial and aeolian processes".JOURNAL OF PALAEOGEOGRAPHY-ENGLISH 12.2(2023). |
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