Behavior of redox-sensitive elements during weathering of granite in subtropical area using X-ray absorption fine structure spectroscopy

Zhang, Zhuojun; Liu, Cong‐Qiang; Cui, Lifeng; Liu, Wenjing; Liu, Tao-Ze; Liu, Baojian; Fan, Bo

doi:10.1016/j.jseaes.2015.02.015

Cited by 17 publications

(15 citation statements)

References 47 publications

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“…For the granite bedrock samples, zircon is more likely to be distributed uniformly, while Ti is less likely to be subjected to this issue as it is much more abundant than Zr as a major element (Nesbitt, 1979). Coefficients of variation for Zr and Ti content in the four bedrock samples are 0.12 and 0.08 respectively (Zr content data from Liu, 2013 and Zhang et al, 2015). So, Ti was assumed to be a better candidate for inert element in this study.…”

Section: Major Chemical Composition Of the Soil And Weathering Profilesmentioning

confidence: 99%

Deep weathering along a granite ridgeline in a subtropical climate

Liu

Brantley

et al. 2016

Chemical Geology

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Bulk chemical composition and mineralogy were examined in three soil profiles and a deeper 11-meter profile weathering on a granite ridgeline under subtropical climate conditions in south China. The weathering sequence is delineated by mineralogy and major element variations.Apatite, biotite, hornblende and plagioclase dissolve early during weathering, resulting in nearly 100% Ca and Na loss and significant Mg, Fe and P depletion at depth. The K-feldspar reaction front begins at the depth of depletion of plagioclase, leading to a loss of 80% of the K at the land surface near the bottom of the ridgeline and almost 100% at the top. Dissolution of quartz and other silicates releases about 60% of Si in the profiles. Kaolinite is the dominant clay mineral and it transforms to gibbsite in the uppermost layer. The soil horizon (upper 100cm) is the zone dominated by pedogenic processes, including active biological activity, physical erosion and

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Section: Major Chemical Composition Of the Soil And Weathering Profilesmentioning

confidence: 99%

Deep weathering along a granite ridgeline in a subtropical climate

Liu

Brantley

et al. 2016

Chemical Geology

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“…The JLN-S1 profile targeted in this study has been previously analyzed by Zhang et al (2015), Cui et al (2016) and Liu et al (2016). It is located in the northern Nanling granite belt in Longnan, Jiangxi Province, southeastern China (114°46'E, 24°58'N), at an altitude of 225 m asl (Fig.…”

Section: Study Area and Sample Selectionmentioning

confidence: 99%

“…These are the working assumptions that are tested in the present study by analyzing the upper 11 m of a lateritic profile developed on a granitic bedrock in south China, under a subtropical climate, and already well studied and characterized in term of mineralogy and geochemistry (Cui et al, 2016;Liu et al, 2016;Zhang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Determination of regolith production rates from 238U-234U-230Th disequilibrium in deep weathering profiles (Longnan, SE China)

et al. 2021

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“…It approximately covers 40% of the surface land area with thickness in the range of 0-60 m in Shenzhen, China [1][2][3]. e main mineral ingredients of CDG soil are feldspar, mica, and quartz [4]. In general, CDG soil has an inherently heterogeneous nature since the mineralogy of the parent rock undergoes intense variations in the process of chemical weathering, physical disintegration, hydrothermal alteration, and migration [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Loading Path on the Mechanical Properties of Completely Decomposed Granite Soil Based on the Multiscale Method

Zhao

Wen

Sun

et al. 2021

Advances in Civil Engineering

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Mechanical properties of intact completely decomposed granite (CDG) soil, widely distributed in South China, decrease drastically as encountering external load-related disturbance or soaked by water. In this study, staged triaxial consolidated drained (CD) test and microscopic scanning were conducted using intact CDG specimens extracted from a construction site to investigate the mechanical behavior and microscopic pore distribution. The results show that the stress-strain relationship reveals a shrinking behavior in the first-stage loading and a brittle behavior in the second-stage loading. The development of cracks is affected by the principal stress, which causes the pores and cracks to shrink or partially close. In addition, Esec-1 increases linearly with the increase of confining pressure, but Esec-2 decreases exponentially.

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Behavior of redox-sensitive elements during weathering of granite in subtropical area using X-ray absorption fine structure spectroscopy

Cited by 17 publications

References 47 publications

Deep weathering along a granite ridgeline in a subtropical climate

Deep weathering along a granite ridgeline in a subtropical climate

Determination of regolith production rates from 238U-234U-230Th disequilibrium in deep weathering profiles (Longnan, SE China)

Effect of Loading Path on the Mechanical Properties of Completely Decomposed Granite Soil Based on the Multiscale Method

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