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Geochemistry of sediments from Barkol Lake in the westerly influenced northeast Xinjiang dataset (since 9400 cal a BP)
CTR :91
Key words Barkol Lake,Geochemistry
Relevant data Though considerable studies concerning past climate changes in the Xinjiang, northwest China, have been performed, Holocene climate changes of this area are still poorly documented and understood. In this study, we emphasize the potential of geochemical elements in sediments for indicating the chemical weathering intensity (CWI) of Bakol Lake catchment during the Holocene. The results indicate that the CWI represented by ratios of (Ca + Mg + Na + K)/Al, Ca/Mg, Ca/Al, Mg/Al, Si/Al, Mn/Al and Ca/Al, has the potential to reflect past climatic conditions. Three weakened CWI periods, i.e., from 9400-7600 cal a BP, from 6000-5000 cal a BP and since 2000 cal a BP afterwards, and two strengthened CWI periods, i.e., from 7600-6000 cal a BP and from 5000-4000 cal a BP, are revealed. In combination of multi-proxy records including carbonate δ18O and δ13C, total carbonate content, as well as total organic carbon, we find the thermal conditions possibly played an important role in the CWI of lake catchment, with a warmer climate favoring stronger CWI and vice versa. In contrast, the moisture conditions appear less influence on the CWI. This new result is expected to be helpful for strengthening our understanding of the spatial and temporal patterns of Holocene climate changes in the westerly influenced region.
Data shows that
a. Description of Intellectual Property Rights When using a dataset, please refer to the following documents in the article: Wei Zhong, Zhanghong Pen, Jibin Xue, et al. Geochemistry of sediments from Barkol Lake in the westerly influenced northeast Xinjiang: Implications for catchment weathering intensity during the Holocene[J]. Journal of Asian Earth Sciences, 2012, 50: 7-13 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 - Lakes and oceans
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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