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Bias in sediment chemical weathering intensity evaluation: A numerical simulation study
Earth-Science Reviews, 2023Xing Jian
exaly +2 more sources
Earth and Planetary Science Letters, 2023
Vast emissions of volcanogenic greenhouse gases resulted in rapid global warming during the latest Permian mass extinction (LPME, ∼252 Ma), the impact of which on continental chemical weathering conditions was complex. Here, we compile Chemical Index of Alteration (CIA) records from 25 terrestrial and 12 marine sections with a near-global ...
Xu, Guozhen +9 more
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Vast emissions of volcanogenic greenhouse gases resulted in rapid global warming during the latest Permian mass extinction (LPME, ∼252 Ma), the impact of which on continental chemical weathering conditions was complex. Here, we compile Chemical Index of Alteration (CIA) records from 25 terrestrial and 12 marine sections with a near-global ...
Xu, Guozhen +9 more
openaire +1 more source
CATENA, 2021
Abstract Continental weathering plays a crucial role in the evolution of the Earth’s surface by linking Earth's spheres, shaping landscapes and regulating chemical cycles and global climate. Regolith weathering studies in some cases ideally assume successive and progressive bottom-up physicochemical variation trends.
Haowei Mei +4 more
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Abstract Continental weathering plays a crucial role in the evolution of the Earth’s surface by linking Earth's spheres, shaping landscapes and regulating chemical cycles and global climate. Regolith weathering studies in some cases ideally assume successive and progressive bottom-up physicochemical variation trends.
Haowei Mei +4 more
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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 +7 more
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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 +7 more
openaire +2 more sources
Global quantitative model of chemical weathering intensity
2021Global quantitative estimation of intensity of recent processes of chemical weathering and connected with that newly formed secondary minerals is given. Shows that all clay and at least 50% of silica deposits of actual sedimentary rocks of Earth crust represent the hydrogenous product of interaction processes between natural waters and erupted mountain
V.P. Zverev, O.Y. Varvanina
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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 ...
A. V. Maslov, V. N. Podkovyrov
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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 ...
A. V. Maslov, V. N. Podkovyrov
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Intense chemical weathering in southwest Japan during the Pliocene warm period
Journal of Asian Earth Sciences, 2019Abstract Bulk chemical composition and mineral composition of the Pliocene sediments in southwest Japan reveal the effects of source rock compositions and grain sizes, as well as the relationship between sedimentary environments and the degree of chemical weathering in the Pliocene warm period.
Nozomi Hatano +3 more
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Mineralogical changes during intense chemical weathering of sedimentary rocks in Bangladesh
Journal of Asian Earth Sciences, 2002Abstract Bangladesh is situated in a subtropical to tropical climatic zone. A recently weathered crust has developed on sedimentary bedrock (sandstone, siltstone, shale and claystones) of Tertiary–Quaternary age. Weathered samples were collected from 16 sections totaling 68 samples and were analyzed mineralogically.
Md.R. Islam +3 more
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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
Meunier, A. +4 more
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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
Meunier, A. +4 more
openaire +1 more source