Results 271 to 280 of about 4,918,557 (342)

Seasonal variation of chemical weathering and its controlling factors in two alpine catchments, Nam Co basin, central Tibetan Plateau

Journal of Hydrology, 2019
To investigate the seasonal variation of chemical weathering and its controlling factors in the central Tibetan Plateau (TP), hydrochemistry of stream water in two alpine catchments, the Niyaqu and Qugaqie, was studied at an unprecedented temporal ...
Zheng Yu, Guangjian Wu, Laura Keys, Fei Li, N. Yan, D. Qu, Xiaomin Liu   +6 more
semanticscholar   +1 more source

Hydro‐Geochemical and Sr Isotope Characteristics of the Yalong River Basin, Eastern Tibetan Plateau: Implications for Chemical Weathering and Controlling Factors

Geochemistry Geophysics Geosystems, 2019
Major ions and Sr isotope compositions of waters in the Yalong River basin in the eastern Tibetan plateau were investigated to explore the sources of dissolved loads and the controls on chemical weathering rates.
Xuan Zhang, Zhifang Xu, Wenjing Liu, S. Moon, T. Zhao, Xiaode Zhou, Jiangyi Zhang, Yao Wu, Hao Jiang, Li Zhou   +9 more
semanticscholar   +1 more source

Reduced chemical weathering intensity in the Qaidam Basin (NE Tibetan Plateau) during the Late Cenozoic

Journal of Asian Earth Sciences, 2019
Cenozoic basin sediments around the Tibetan Plateau are valuable archives that can be used to reveal long-term interactions among tectonics, climate and weathering.
J-X Bao, Chunhui Song, Yibo Yang, X. Fang, Q. Meng, Ying Feng, Pengju He   +6 more
semanticscholar   +1 more source

Experimental evidence for mineral-controlled release of radiogenic Nd, Hf and Pb isotopes from granitic rocks during progressive chemical weathering

Chemical Geology, 2019
The role of accessory minerals in the incongruent release of Hf and Pb during continental weathering and its implications for the generation of distinct seawater isotope compositions is subject of debate.
V. Dausmann, M. Gutjahr, M. Frank, K. Kouzmanov, U. Schaltegger   +4 more
semanticscholar   +1 more source

Weathering of chemically modified wood

Holz als Roh- und Werkstoff, 1992
The weathering characteristics and microscopic structure of unfinished acetylated and untreated radiata pine are reported. Samples were exposed outdoors over 28 weeks in Rotorua, New Zealand. Acetylated veneer had improved checking resistance when compared with untreated veneer, confirming results of a previous study on accelerated weathering of ...
D. V. Plackett, E. A. Dunningham, A. P. Singh   +2 more
openaire   +2 more sources

Chemical weathering of small catchments on the Southeastern Tibetan Plateau I: Water sources, solute sources and weathering rates

Chemical Geology, 2018
Hydro-geochemical study of small catchment provides important information to identify water and solute sources, understand chemical weathering processes and their controlling factors.
Hao Jiang, Wenjing Liu, Zhifang Xu, Xiaode Zhou, Ziyan Zheng, T. Zhao, Li Zhou, Xuan Zhang, Yifu Xu, Taoze Liu   +9 more
semanticscholar   +1 more source

Chemical Weathering and Cavernous Weathering

1992
There is a widespread belief that quartz-rich sandstones are “virtually chemically inert” (Tricart and Cailleux 1972). Quartz is the mineral most resistant to weathering according to Goldich’s scale; estimates of relative chemical erosion rates for major rock types (Meybeck 1987) place sandstones with mica schists and granites (rates relative to ...
Robert Young, Ann Young
openaire   +1 more source

Chemical Weathering of Glauconite

Soil Science Society of America Journal, 1975
Abstract Glauconite samples were collected from geologic cuts in the Barce Plateau in the eastern part of Libya. The glauconite was associated with limestone, dolomitic limestone, marl, marl stone, chert, and kaolinite.
Gilani Abudelgawad, A. L. Page, L. J. Lund   +2 more
openaire   +1 more source

Differentiation of weathered chemically dispersed oil from weathered crude oil

Environmental Monitoring and Assessment, 2019
Oil fingerprinting is a crucial technology to trace the sources and behaviors of spilled oil. The use of dispersants enhances the stay of dispersed oil in a water column and changes the important properties of spilled oil. In case of fingerprinting of dispersed oil driven by dispersants, the fate and behaviors of biomarkers may be affected by the ...
Xing Song, Leonard M. Lye, Bing Chen, Baiyu Zhang   +3 more
openaire   +2 more sources

Water geochemistry of rivers draining karst-dominated regions, Guangxi province, South China: Implications for chemical weathering and role of sulfuric acid

Journal of Asian Earth Sciences, 2018
Guangxi province, located in South China, is a typical karst region affected by acid depositions for a couple of decades. Water samples from the major river basins in this region were collected and the chemical compositions were measured with a main ...
Hao Jiang, Wenjing Liu, T. Zhao, Huiguo Sun, Zhifang Xu   +4 more
semanticscholar   +1 more source