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Geochemical Characteristics and Environmental Implications of Surface Sediments from Different Types of Sand Dunes in the Dinggye Area, Southern Tibet
Geochemical characteristics of aeolian sand are beneficial for understanding sand dune formation and evolution. Few studies in the Dinggye area, Southern Tibet, have focused on the geochemical characteristics of aeolian sand. Thus, we present new geochemical data that provide insights into the geoch...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9517929/ https://www.ncbi.nlm.nih.gov/pubmed/36078344 http://dx.doi.org/10.3390/ijerph191710628 |
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author | Pan, Meihui Chen, Yougui Hao, Zewen Li, Chenlu Zhao, Huimin Wang, Jinyu Gong, Yifu |
author_facet | Pan, Meihui Chen, Yougui Hao, Zewen Li, Chenlu Zhao, Huimin Wang, Jinyu Gong, Yifu |
author_sort | Pan, Meihui |
collection | PubMed |
description | Geochemical characteristics of aeolian sand are beneficial for understanding sand dune formation and evolution. Few studies in the Dinggye area, Southern Tibet, have focused on the geochemical characteristics of aeolian sand. Thus, we present new geochemical data that provide insights into the geochemical characteristics and environmental implications of aeolian sands in the Dinggye area. The results show that mobile dunes, climbing sand sheets, and nebkhas show heterogeneity in elemental concentrations and UCC-normalized distribution; MgO, TiO(2), Ni, Pb, and Nb are higher in mobile dunes; SiO(2), CaO, K(2)O, Na(2)O, P(2)O(5), V, Cr, Co, Cu, Ba, and Ce are higher in climbing sand sheets; and Al(2)O(3), Fe(2)O(3), La, Zn, As, Sr, Y, Zr, Rb, and Ga are higher in nebkhas. Principal component analysis (PCA) and correlation analysis indicate that the main factor affecting elemental content is grain size sorting, followed by provenance, while chemical weathering and regional precipitation are less influential. The CIA and A-CN-K triangle indicate that the different dune types are at a lower chemical weathering stage, with plagioclase weathering and decomposition first. The combination of grain size characteristics, elemental ratios, multidimensional scale (MDS), PCA, and geomorphological conditions suggest that the flood plain and the lakeshore are the main sand sources of aeolian sands in the Dinggye area. |
format | Online Article Text |
id | pubmed-9517929 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-95179292022-09-29 Geochemical Characteristics and Environmental Implications of Surface Sediments from Different Types of Sand Dunes in the Dinggye Area, Southern Tibet Pan, Meihui Chen, Yougui Hao, Zewen Li, Chenlu Zhao, Huimin Wang, Jinyu Gong, Yifu Int J Environ Res Public Health Article Geochemical characteristics of aeolian sand are beneficial for understanding sand dune formation and evolution. Few studies in the Dinggye area, Southern Tibet, have focused on the geochemical characteristics of aeolian sand. Thus, we present new geochemical data that provide insights into the geochemical characteristics and environmental implications of aeolian sands in the Dinggye area. The results show that mobile dunes, climbing sand sheets, and nebkhas show heterogeneity in elemental concentrations and UCC-normalized distribution; MgO, TiO(2), Ni, Pb, and Nb are higher in mobile dunes; SiO(2), CaO, K(2)O, Na(2)O, P(2)O(5), V, Cr, Co, Cu, Ba, and Ce are higher in climbing sand sheets; and Al(2)O(3), Fe(2)O(3), La, Zn, As, Sr, Y, Zr, Rb, and Ga are higher in nebkhas. Principal component analysis (PCA) and correlation analysis indicate that the main factor affecting elemental content is grain size sorting, followed by provenance, while chemical weathering and regional precipitation are less influential. The CIA and A-CN-K triangle indicate that the different dune types are at a lower chemical weathering stage, with plagioclase weathering and decomposition first. The combination of grain size characteristics, elemental ratios, multidimensional scale (MDS), PCA, and geomorphological conditions suggest that the flood plain and the lakeshore are the main sand sources of aeolian sands in the Dinggye area. MDPI 2022-08-26 /pmc/articles/PMC9517929/ /pubmed/36078344 http://dx.doi.org/10.3390/ijerph191710628 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pan, Meihui Chen, Yougui Hao, Zewen Li, Chenlu Zhao, Huimin Wang, Jinyu Gong, Yifu Geochemical Characteristics and Environmental Implications of Surface Sediments from Different Types of Sand Dunes in the Dinggye Area, Southern Tibet |
title | Geochemical Characteristics and Environmental Implications of Surface Sediments from Different Types of Sand Dunes in the Dinggye Area, Southern Tibet |
title_full | Geochemical Characteristics and Environmental Implications of Surface Sediments from Different Types of Sand Dunes in the Dinggye Area, Southern Tibet |
title_fullStr | Geochemical Characteristics and Environmental Implications of Surface Sediments from Different Types of Sand Dunes in the Dinggye Area, Southern Tibet |
title_full_unstemmed | Geochemical Characteristics and Environmental Implications of Surface Sediments from Different Types of Sand Dunes in the Dinggye Area, Southern Tibet |
title_short | Geochemical Characteristics and Environmental Implications of Surface Sediments from Different Types of Sand Dunes in the Dinggye Area, Southern Tibet |
title_sort | geochemical characteristics and environmental implications of surface sediments from different types of sand dunes in the dinggye area, southern tibet |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9517929/ https://www.ncbi.nlm.nih.gov/pubmed/36078344 http://dx.doi.org/10.3390/ijerph191710628 |
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