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Geochemical and magnetic characteristics of fine-grained surface sediments in the arid China (along the southern border of Mongolia) dataset
CTR :76
Key words arid China,Geochemical and magnetic characteristics
Relevant data We investigated the geochemical and magnetic characteristics of fine-grained surface sediments (fractions <63 μm) of 182 samples collected at 20 sites in potential dust source areas of arid China (along the southern border of Mongolia). We found coefficients of variation ranging from 2.8 to 35.2% for the four magnetic parameters (χlf, ARM, SIRM, and the S-ratio) in these samples, and this variation may have great significance for interpreting the magnetic characteristics of aeolian deposits far from their source regions. In addition, the results also show that chemical weathering in the potential dust source areas did not play a major role in pedogenesis and evolution of the characteristics of the fine-grained surface sediments because there were variations of only 5% in the values of the chemical index of alteration, which is usually considered to indicate the intensity of chemical weathering, versus variations of 14% in the Rb/Sr ratio. In addition, there was no significant positive correlation between the magnetic susceptibility and the Rb/Sr ratio, which shows that in the source areas, weathering caused little magnetic enhancement in the fine-grained surface sediments. Therefore, in addition to pedogenesis effects on the windblown sediments deposited far from their source regions, the geochemical and magnetic characteristics of fine-grained surface sediments in source areas exhibited complicated patterns.
Data shows that
a. Description of Intellectual Property Rights When using a dataset, please refer to the following documents in the article: Fangming Zeng, Meiyan Liang, Shuzhen Peng, et al. Sr-Nd-Pb Isotopic Compositions of the Neogene Eolian Deposits in the Xining Basin and Implications for Their Dust Sources[J]. Journal of Earth Science, 2015, 26(5): 669-676 b. The data labels refer to the following specifications: In order to respect intellectual property rights and protect the rights and interests of data contributors and service providers, data users are requested to mark the data sources in the research results (including project evaluation reports, acceptance reports, academic papers and graduation thesis) based on this data, and the references cited in the [Citation Reference], and submit the publicly available results to the "National Earth System Science Data Sharing Platform" Data sources refer to the following specifications: Chinese Expression: 国家科技基础条件平台-国家地球系统科学数据共享平台-东亚古环境科学数据库; English Expression: East Asian Paleoenvironmental Science Database, National Earth System Science Data Sharing Infrastructure, National Science & Technology Infrastructure of China Acknowledgments refer to the following specifications: Acknowledgments in Chinese: 感谢国家科技基础条件平台-国家地球系统科学数据共享平台-东亚古环境科学数据库提供数据支撑。 Acknowledgments in English: Acknowledgement for the data support from " National Earth System Science Data Sharing Infrastructure, National Science & Technology Infrastructure of China, East Asian Paleoenvironmental Science Database. " Iegal liability: The platform owns intellectual property rights protected by the law, including copyrights for all the data products or services and relevant information published by the platform itself or contributed by some data contributors. No unit or individual may copy, modify, transcribing, spread or sell any part of the above data products, services, information or materials in any way or reason without the written permission of this platform. Where the infringement of copyright and other intellectual property rights of the platform, the platform will be held accountable according to law, hereby solemnly declare! c. Contacts Name: Data processing group Email: eapsd@ieecas.cn Tel: 029-62336213
Data collection format Excel
Data classification Geological record - Terrestrial environmental records
Data source
East Asian Paleoenvironmental Science Database
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Full name: 
ZhaoHL Email: zhaohl@ieecas.cn
Unit: IEECAS Phone: 029-62336213
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