Results 31 to 40 of about 5,346,196 (304)

Evaluating the Effects of Sedimentary Cycles (Aeolian and Fluvial) on Chemical Weathering Indices in Rafsanjan Region, Southeast of Iran [PDF]

Desert, 2022
Chemical indices are widely used for characterizing the degree of weathering. In this study, we focused on evaluating the capability of chemical weathering indices to distinguish the sequence of aeolian-fluvial sediments in an arid region of Iran.
I. Esfandiarpour-Boroujeni, F. Bandehelahi, Z. Mosleh, A. Karimi, M.H. Farpoor, M. Fattahi   +5 more
doaj   +1 more source

Weathering microenvironments on feldspar surfaces: implications for understanding fluid-mineral reactions in soils [PDF]

, 2008
The mechanisms by which coatings develop on weathered grain surfaces, and their potential impact on rates of fluid-mineral interaction, have been investigated by examining feldspars from a 1.1 ky old soil in the Glen Feshie chronosequence, Scottish ...
Smith, C.L., M. E. Hodson, Lee, M.R., Smith, C. L., C. L. Smith, Hodson, M.E., M. Mackenzie, MacKenzie, M., D. J. Brown, Lee, M. R., Brown, D. J., Hodson, M. E., Brown, D.J., M. R. Lee   +13 more
core   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

Applications of stable water and carbon isotopes in watershed research: Weathering, carbon cycling, and water balances [PDF]

, 2011
Research on rivers has traditionally involved concentration and flux measurements to better understand weathering, transport and cycling of materials from land to ocean.
Petelet-Giraud, Emmanuelle, Philippe Négrel, Heiko Freitag, Schulte, Peter, Van Geldern, Robert, Jean-Luc Probst, Peter Schulte, Ajaz Karim, Kevin Telmer, Johannes A.C. Barth, Probst, Jean-Luc, Freitag, Heiko, Karim, Ajaz, Robert van Geldern, Anne Probst, Telmer, Kevin, Négrel, Philippe, Barth, Johannes A.C., Probst, Anne, Ján Veizer, Veizer, Jan, Emmanuelle Petelet-Giraud, Barth, J. A. C., Barth, Johannes A. C.   +23 more
core   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

Modeling the evolution of natural cliffs subject to weathering. 1, Limit analysis approach [PDF]

, 2011
Retrogressive landsliding evolution of natural slopes subjected to weathering has been modeled by assuming Mohr-Coulomb material behavior and by using an analytical method.
G. B. Crosta, Crosta, Giovanni B., Utili, Stefano, S. Utili   +3 more
core   +1 more source

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
doaj   +1 more source