Results 1 to 10 of about 5,239 (169)

Chemical Weathering Intensity as a Reliable Indicator for Southwest Summer Monsoon Reconstruction: Evidence From Clay Minerals of Qionghai Lake Sediments Since the Last Glacial Maximum [PDF]

Geochemistry, Geophysics, Geosystems, 2023
Studying the evolution history of the southwest summer monsoon (SSM) throughout geological time, particularly during its strongest period in the Holocene, can improve our understanding of its variation and driving mechanisms, and even help predict future
Xiaoli Yu, Gen Wang, Ting Zhang, Xueyun Ma, Xiaomei Zhang, Lun Li, Zelong Li, Zengguang Guo, Zhifu Wei, Yongli Wang, Shixin Zhou   +10 more
doaj   +2 more sources

The Hydrochemistry Characteristics and Chemical Weathering Intensity of an Anthropogenically Involved Catchment, South China [PDF]

Water
The hydrochemical characteristics of watersheds are influenced by many factors, with chemical weathering and human activities exerting the most substantial influence. Performing a quantitative evaluation of the factors contributing to the chemical weathering of rocks is of significant scientific importance. This research zeroes in on the Qingtang River
Fan Liu, Song Wang, Jia Wang, Fang Guo, Yuruo Shi, Ping’an Sun   +5 more
openalex   +2 more sources

The weathering intensity scale (WIS): An alternative approach of the Chemical Index of Alteration (CIA) [PDF]

American Journal of Science, 2013
The chemical index of alteration (CIA) is a tool to calculate the weathering intensity (Nesbitt and Young, 1982). It has been largely used to reconstitute the past climates on Earth at different epochs and to determine the sediment source rocks from shale and graywacke stratigraphical series. However, because it induces some uncertainties, we propose a
Alain Meunier, Laurent Caner, F. Hubert, A. El Albani, D. Pret   +4 more
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Quantifying chemical weathering intensity and trace element release from two contrasting basalt profiles, Deccan Traps, India [PDF]

Chemical Geology, 2013
Weathering profiles developed on basalt substrate contain information relevant to climate, atmospheric composition and evolution, nutrient release into the hydrosphere, and understanding Martian regolith. In this study, the chemical compositions of two profiles developed on Deccan Trap basalt are examined. One is sub-Recent and has only progressed to a
Michael G. Babechuk, Mike Widdowson, Balz S. Kamber   +2 more
openalex   +4 more sources

Reconstructing Chemical Weathering Intensity in the Mekong River Basin Since the Last Glacial Maximum [PDF]

Paleoceanography and Paleoclimatology, 2019
AbstractHigh‐resolution clay mineralogy and major element geochemistry of Core SO18383‐3 collected off the Mekong River mouth in the southern South China Sea have been investigated, aiming to reconstruct sediment provenance and chemical weathering intensity since the last glaciation.
Thanakorn Jiwarungrueangkul, Zhifei Liu, Karl Stattegger, Pham Nhu Sang   +3 more
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K isotopes trace temporal silicate weathering intensity [PDF]

Nature Communications
Silicate weathering alters the biogeochemical compositions of the lithosphere, hydrosphere, and atmosphere, and thereby regulates both nutrient cycling and habitable temperatures on Earth, but tracing silicate weathering effectively remains a challenge ...
Long-Fei Gou, He Sun, Hai-Ou Gu, Philip A. E. Pogge von Strandmann, Wenshuai Li, David J. Wilson, Jun Xiao, Zhi-Qi Zhao, Albert Galy, Zhangdong Jin   +9 more
doaj   +2 more sources

Chemical weathering intensity and terrigenous flux in South China during the last 90,000 years – evidence from magnetic signals in marine sediments

Frontiers in Earth Science, 2016
The level of chemical weathering is strongly affected by climate. We presented magnetic properties associated with element ratios from the northern part of the South China Sea to denote links between chemical weathering intensity and monsoon changes in ...
Xiaoqiang eYang, Xuechao ePeng, Xiaoke eQiang, Niu eLi, Qixian eZhou, Wang eYuejun   +5 more
doaj   +2 more sources

A Holocene Lacustrine Record of Variations in Chemical Weathering Intensity in the Mu Us Desert, China

Science of The Total Environment, 2023
The Mu Us Desert is an ideal location to study environmental changes during the Late Quaternary, because of its unique characteristics. The Abaoyan (ABY) profile, a typical aeolian-lacustrine profile located at the eastern edge of the desert, was investigated in this study.
Yijing Li, Xiaokang LIU, Jingli Pang, Zhiyong Ding, Xiaoxiao Yue, Xingdi Yang, Yixue Zhao, Zhibao Dong   +7 more
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Intensity of Chemical Weathering in Late Precambrian: New Data on the Riphean Stratotype (Southern Ural)

Стратиграфия, 2023
The values of Ni/Co, La/Sc, and Th/Cr (indicators of the composition of rock complexes eroded in paleowatersheds) and the values of CIA, Rb/Al, K/Al and K/Rb (indicators of the intensity of chemical weathering on land), typical for fine-grained clastic rocks of the Riphean of the Southern Urals were compared to the data given in the publication “Long ...
А. В. Маслов, V. N. Podkovyrov, А. Б. Котов   +2 more
openalex   +3 more sources

Soil Weathering and Nutrient Dynamics in Response to Land-Use Change Following Forest Conversion to Tea Plantations [PDF]

Plants
Forests’ conversion to tea plantations is a land use transition type with high economic value in China. How this conversion affects soil weathering and nutrient characteristics remains unclear.
Nan Li, Binbin Shen, Abdelkader Bassiony, Yang Liu, Jianwu Li, Li Ruan   +5 more
doaj   +2 more sources