Article
Chemistry, Physical
Shi Cheng, Hanlie Hong, Kaipeng Ji, Fan Li, Xinghong Wang
Summary: The alteration of biotite during igneous rock weathering leads to the formation of interstratified biotite/vermiculite and halloysite minerals. The transformation involves leaching of K+ and accumulation of hydrated Mg2+ and Fe3+ in the interlayer space of biotite, resulting in the solid-solid state transformation. Halloysite forms through dissolution-precipitation process, while vermiculitization occurs due to increasing weathering. The findings contribute to a better understanding of the geochemical processes of biotite weathering.
APPLIED CLAY SCIENCE
(2022)
Article
Geochemistry & Geophysics
Bradley W. Goodfellow, George E. Hilley
Summary: This study predicts the influence of biotite abundance and water velocity on the structure and thickness of weathering zones in granitic rocks using a coupled model. It finds that increasing water velocity leads to thicker weathering zones with greater volumes of oxidative dissolution, whereas decreasing biotite abundance results in thinner weathering zones. The extent of matrix cracking is influenced by the interplay between water velocity, biotite abundance, and crystal size.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Mathieu Nouazi Momo, Anicet Beauvais, Gatien Romuald Kenfack Nguemo, Ethel Nkongho Ashukem, Edima Roland Yana, Salomon Cesar Nguemhe-Fils, Rachel Ngo Nyouma, Alex Chimeu Akaba
Summary: The landscapes of eastern Adamaoua highlands have been formed through weathering and erosion processes of Pan-African crystalline rocks and Neogene volcanics. Basalt and granite have different weathering characteristics due to their contrasting parent rock compositions. The persistence of a per-humid climate and good drainage have sustained rock-weathering and local surface erosion processes in the area.
Article
Geosciences, Multidisciplinary
Ronald I. I. Dorn, Ian J. J. Walker
Summary: Dirt cracking is a process that physically opens fractures in desert bedrock through the combined mechanisms of carbonate precipitation and wetting and drying of clays in the fractures. This study discovers the occurrence of dirt cracking in the hypermaritime Mediterranean climate of Victoria, British Columbia, Canada. The precipitation of carbonates derived from the decay of host-rock minerals widens the fractures, and the dissolution of silicates aids in the penetration of carbonates. Additionally, lead contamination from iron oxides scavenging heavy metals is observed. The presence of carbonate precipitation processes in different climatic settings suggests that dirt cracking may be a common rock-decay process in biogeochemical environments dry enough for carbonate precipitation in rock fractures.
Article
Geosciences, Multidisciplinary
Xinyu Liu, Xianwei Zhang, Lingwei Kong, Gang Wang, Honghu Liu
Summary: This study investigated the disintegration behavior of granite residual soil in collapsing gully areas in southern China through laboratory disintegration tests. It was found that the red soil layer and the shallow sandy soil layer exhibited complete and rapid disintegration, while the deeper layers showed slower and incomplete disintegration. The weakening of cementation was identified as the main cause of soil disintegration and gully collapse.
Article
Geosciences, Multidisciplinary
Xinyu Liu, Xianwei Zhang, Lingwei Kong, Gang Wang, Honghu Liu
Summary: Chemical weathering reduces the strength and stability of granite regolith and increases its water sensitivity. Understanding the correlation between chemical weathering and mechanical properties of regolith is crucial for assessing gully erosion. This study investigates the chemical weathering of granite and evaluates the appropriateness of previous chemical weathering indices, providing a comprehensive dataset on the properties of granite regolith and enhancing the understanding of chemical weathering.
Article
Geosciences, Multidisciplinary
Xinyu Liu, Xianwei Zhang, Lingwei Kong, Gang Wang, Honghu Liu
Summary: Chemical weathering significantly affects the strength and stability of granite regolith, and studying the correlation between chemical weathering degree and mechanical properties can enhance understanding of geomorphological evolution.
Article
Geosciences, Multidisciplinary
Gerald Raab, Wasja Dollenmeier, Dmitry Tikhomirov, Goncalo Vieira, Piotr Migon, Michael E. Ketterer, Marcus Christl, Jamey Stutz, Markus Egli
Summary: There is limited data available on comparing soil erosion rates between surfaces of different ages due to short-term processes frequently masking the longer-term erosion signal. This study used isotopes and the principles of percolation theory to investigate the soil dynamics in two areas of different ages at Serra da Estrela, Portugal. The results showed temporal differences in soil mixing processes and revealed that the formerly glaciated area had lower weathering and carbon content compared to the non-glaciated area.
Article
Geosciences, Multidisciplinary
Gen K. Li, Seulgi Moon, Justin T. Higa
Summary: This study investigates the residence time scale of excess topography in the eastern Tibetan mountains. By analyzing different lithologies and rates of erosion and exhumation, it is found that the residence time scale varies with local slope angles but is consistent across different lithologies. The estimated range-scale residence time scale suggests steady-state construction and erosion of excess topography over thousand to million years time scales in this orogen.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geochemistry & Geophysics
Zachary P. Meyers, Laura K. Rademacher, Marty D. Frisbee, Sara R. Warix
Summary: This study investigates the factors controlling geochemical evolution at the Owens Valley Sierra Nevada frontal fault zone. By applying a multi-tracer approach to mountain-front springs, the study reveals that geologic heterogeneity exerts a dominant control on geochemical evolution.
Article
Geography, Physical
Fabio Scarciglia, Antonella Marsico, Domenico Capolongo
Summary: This study explores the use of terrestrial laser scanner combined with macro/micromorphological and compositional analyses to assess three-year surface and volume changes on three granodiorite scarps in a Mediterranean upland environment (Sila Massif, Italy), estimate erosion/accumulation rates and relate them to specific geomorphic processes, weathering patterns and grades.
Article
Geosciences, Multidisciplinary
Pedro A. Dinis, Jose Sa Pereira, Eduardo Ivo Alves, Joao Serra Pratas
Summary: This study presents mineralogical and geochemical data from weathering mantles in the equatorial region of Maubisse, East Timor. Despite being wet and warm, the weathering intensity in this tectonically active area is relatively low, suggesting that weathering reactions are not keeping up with physical denudation. The research highlights the control of local orographic and lithologic features on regolith composition in mountainous equatorial regions.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Review
Geosciences, Multidisciplinary
Zhangdong Jin, Robert G. Hilton, A. Joshua West, Gen K. Li, Fei Zhang, Jin Wang, Gaojun Li, Xuanmei Fan, Meng-Long Hsieh
Summary: Earthquakes play a fundamental role in the evolution of Earth's topography by inducing landslides that affect erosion, sediment flux, river water chemistry, and carbon export. More monitoring, geochemical tracing, paleo-records, and/or modelling studies are needed to compare catchment erosion and weathering processes before and after earthquake events.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Friedhelm von Blanckenburg, Jan A. Schuessler, Julien Bouchez, Patrick J. Frings, David Uhlig, Marcus Oelze, Daniel A. Frick, Tilak Hewawasam, Jeannie Dixon, Kevin Norton
Summary: The process of rock weathering and element cycling in ecosystems is strongly influenced by erosion rates at different study sites, with weathering rates predominantly controlled by regolith residence time rather than landscape erosion rates. Nutrient elements are intensely recycled in supply-limited environments, while elements are directly taken up from soil and rock in kinetically-limited settings. Biomass growth does not control weathering rates, and there is a deficit in river solute export compared to solute production in regolith at all sites.
AMERICAN JOURNAL OF SCIENCE
(2021)
Article
Environmental Sciences
Maria Nicoli, Negar Eftekhari, Carmela Vaccaro, Hipolito Collado Giraldo, Sara Garces, Hugo Gomes, Virginia Lattao, Pierluigi Rosina
Summary: This study provides valuable insights into the prehistoric schematic art on granite at the Abrigo del Lince rock art site in Badajoz, Spain through the use of various analytical techniques. The findings contribute to the understanding of the technological and cultural aspects of the art, as well as conservation and deterioration issues. The study also highlights the importance of biofilms in rock art conservation and challenges the assumption that the presence of oxalate layers is necessarily detrimental.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Oceanography
Zhang Song, Wang Wei, Huang Rihui, Xu Liubing
ACTA OCEANOLOGICA SINICA
(2015)
Article
Geosciences, Multidisciplinary
Rihui Huang, Wei Wang
JOURNAL OF ASIAN EARTH SCIENCES
(2017)
Article
Environmental Sciences
Yanming Zheng, Quanzhou Gao, Xiaohao Wen, Ming Yang, Haidong Chen, Zhaoqiang Wu, Xiaohong Lin
ENVIRONMENTAL EARTH SCIENCES
(2013)
Article
Geography, Physical
Wang Wei, Liang Mingzhu, Huang Shan
JOURNAL OF GEOGRAPHICAL SCIENCES
(2009)
Article
Geography, Physical
Wang Wei, Wu Zheng
JOURNAL OF GEOGRAPHICAL SCIENCES
(2010)
Article
Geochemistry & Geophysics
Jing Feng, Wei Wang
Article
Geography, Physical
Wei Wang, Rihui Huang, Jing Feng
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Environmental Sciences
Li Jian-cheng, Wang Wei, Zheng Yan-ming, Wen Xiao-hao, Feng Jing, Sheng Li, Wang Chen, Qiu Ming-kun
Summary: Through simulation and geological analysis, this study found that a mushroom-shaped rock was not formed by stream erosion, but rather by chemical and physical weathering within the sediment at its bottom.
JOURNAL OF MOUNTAIN SCIENCE
(2022)
Article
Environmental Sciences
Wei Wang, Baosheng Li, Xiaohao Wen, Liubing Xu, Rihui Huang, Jing Feng, Mingkun Qiu
Summary: Several cities in the Salawusu River basin in western China were abandoned after the Yuan Dynasty. Contrary to previous beliefs, the abandonment of these cities was caused by a stream capture event leading to rapid river valley incision, rather than a change to a drier climate. This highlights the importance of considering geographic events in addition to climatic change when studying the environmental influences on archaeological records.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Environmental Sciences
W Wang, P Li, H Tan
JOURNAL OF COASTAL RESEARCH
(2004)
Article
Multidisciplinary Sciences
Z Wu, W Wang, HH Tan, FY Xu
CHINESE SCIENCE BULLETIN
(2000)