Results 21 to 30 of about 15,843 (258)

The Structural Characteristics and Chemical Composition of Serpentine Jade Weathering Rinds: Implications for the Formation Process

Crystals, 2023
Weathering rind retains the greatest extent of the mineralogical and chemical composition information of the original mineral. Recently, we found some brownish-yellow or khaki serpentine jade weathering rinds with a thickness of 0.2–0.6 cm in Ji’an.
Shanna Xue, Mingyue He, Mei Yang, Shaokun Wu   +3 more
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Modelling of slope processes on karst

Acta Carsologica, 2011
The present paper is concerned with the modelling of the karst slope processes. A simple straightforward one dimensional physical model is introduced in order to assess basic behaviour of the slope development.
Uroš Stepišnik, Gregor Kosec
doaj   +1 more source

Characteristics of interactions between black shale and water [PDF]

E3S Web of Conferences, 2019
Some geological engineering problems are caused by weathering of black shale within dispersed sulfide minerals (mainly pyrite), in which some weathering products such as acid water and expansive sulfates play an important role.
Liao Xin, Wang Kangji, Wu Xiyong, Ling Sixiang, Guo Deping, Xi Yingwei   +5 more
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Luminescence Sensitivity of Quartz From Rocks Under in situ Chemical Weathering Conditions

Frontiers in Earth Science, 2022
In provenance investigation of Quaternary sediments, quartz luminescence sensitivity (QLS) has been employed as a technique. The weathering and influence on the earliest signs of luminescence sensitivity of sedimentary quartz require more consideration ...
Zheng Cao, Yingying Jiang, Jiandong Xu, Jiandong Xu, Juxing Zhao, Cheng Zhao   +5 more
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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

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
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Molecular-Composition Analysis of Glass Chemical Composition Based on Time-Series and Clustering Methods

Molecules, 2023
The weathering of ancient glass relics has long been a concerned. Therefore, a systematic and more comprehensive mathematical model with which to correctly judge the category of ancient glass products whose chemical composition changes due to weathering ...
Ying Zou
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Elemental data for Gonghai Lake sediments show significant effects of human activities on weathering processes after 1550 CE

Frontiers in Earth Science, 2023
The international Anthropocene Working Group has recognized the mid-20th centrury (ca. 1950 CE) as the onset of the Anthropocene, but human activities in China altered the land cover and influenced weathering processes much earlier.
Hong Jiang, Hong Jiang, Hong Jiang, Yongming Han, Yongming Han, Yongming Han, Yongming Han, Yalan Tang, Yalan Tang, Yalan Tang, Huimin Fan, Bo Liu, Richard Arimoto   +12 more
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Chemical weathering records in Yungang Formation, North China: implications for stone heritage conservation

Frontiers in Earth Science
The Yungang Grottoes located in Datong area, North China, have experienced extensive surface and structural damage. Previous studies have recognized the importance of temperature and water during weathering, but the quantitative evaluation on both the ...
Xin Huang, Xin Huang, Feng Guo, Feng Guo, Feng Guo, Liang Zhao, Liang Zhao, Feng Zhang, Feng Zhang   +8 more
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Prediction of Glass Chemical Composition and Type Identification Based on Machine Learning Algorithms

Applied Sciences
Ancient glass artifacts were susceptible to weathering from the environment, causing changes in their chemical composition, which pose significant obstacles to the identification of glass products.
Ziwei Chen, Yang Xu, Chao Zhang, Min Tang   +3 more
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Topographic and Climatic Control on Chemical Weathering of Mountainous Riverine Sediments of Hainan Island, South China Sea

Frontiers in Earth Science, 2022
Hainan Island, the largest island in the northwestern South China Sea (SCS), is characterized by many tropical mountainous rivers that flow into the SCS.
Fangjian Xu, Fangjian Xu, Bangqi Hu, Bangqi Hu, Jingtao Zhao, Xiting Liu, Ruyong Cui, Xue Ding, Xue Ding, Guifeng Wang, Jianping Huang   +10 more
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