IEECAS OpenIR  > 古环境研究室
Geochemical composition of Tajikistan loess and its provenance implications
Li, Yue1,2,4; Song, Yougui1; Chen, Xiuling3; Li, Jinchan3; Mamadjanov, Yunus5; Aminov, Jamshed5
2016-03-15
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
Volume446Issue:2016Pages:186-194
SubtypeArticle
AbstractThe Tajikistan (TJ) loess has great significance for the study of Quaternary climate changes and dust source in Central Asia. In this paper, we investigate the geochemical composition and provenance of loess. Our results show that the major elements, in order from high to low average content, are SiO2 > Al2O3 > CaO > Fe2O3 > MgO > K2O > Na2O > TiO2 > P2O5 > MnO. Fe, Ti, P and Mn contents in loess are similar to those in the UCC, as is the case with Si, Al and Mg contents in paleosols. Ca is distinctly enriched in loess, and Si, Al and K are depleted. Na is depleted in both loess and paleosols, and P is depleted only in paleosols. In contrast to the UCC, paleosols show enrichments in all trace elements except for Ba, Sr and Zr, but in loess, some trace elements (e.g., Ba, Co, Ni and Zr) show depletion. The CIA value of TJ loess is lower than that of Kashmir loess, the latter being influenced by differences in the sorting and tectonic environment. There are no great changes about provenance during the formation of TJ loess, and the deposit areas have a shorter distance to the provenance. Geochemical data and atmospheric circulations demonstrate that the TJ loess was mainly transported by the near surface northerly or northwesterly winds, but there may be an additional and local source making a certain contribution to the formation of loess deposits in the south of Tianshan. (C) 2016 Elsevier B.V. All rights reserved.
KeywordTajikistan Loess Geochemical Elements Provenance
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.palaeo.2016.01.025
WOS KeywordCHEMICAL-WEATHERING HISTORY ; CENTRAL-ASIA ; CHINESE LOESS ; SOUTHERN TAJIKISTAN ; PALEOSOL SEQUENCE ; LAST GLACIATION ; HIMALAYA ; INDIA ; PLEISTOCENE ; EVOLUTION
Indexed BySCI
Language英语
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000371553000017
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5796
Collection古环境研究室
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, 97 Yanxiang Rd, Xian 710061, Peoples R China
2.Joint Ctr Global Change Studies, Beijing 100875, Peoples R China
3.Fujian Normal Univ, Sch Geog Sci, State Key Lab Breeding Base Humid Subtrop Mt Ecol, Fuzhou 350007, Peoples R China
4.Chinese Acad Sci, Res Ctr Ecol & Environm Ctr Asia, Urumqi 830011, Peoples R China
5.Acad Sci Tajikistan, Inst Geol Earthquake Engn & Seismol, Dushanbe 734063, Tajikistan
Recommended Citation
GB/T 7714
Li, Yue,Song, Yougui,Chen, Xiuling,et al. Geochemical composition of Tajikistan loess and its provenance implications[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2016,446(2016):186-194.
APA Li, Yue,Song, Yougui,Chen, Xiuling,Li, Jinchan,Mamadjanov, Yunus,&Aminov, Jamshed.(2016).Geochemical composition of Tajikistan loess and its provenance implications.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,446(2016),186-194.
MLA Li, Yue,et al."Geochemical composition of Tajikistan loess and its provenance implications".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 446.2016(2016):186-194.
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