Chemical and mineralogical changes in the textural fractions of quartzite-derived tropical soils, along weathering, assessed by portable X-ray fluorescence spectrometry and X-ray diffraction

Silva, Fernanda Magno; Silva, Sérgio Henrique Godinho; Acuña-Guzman, Salvador Francisco; Silva, Elen Alvarenga; Ribeiro, Bruno Teixeira; Fruett, Tatiele; Inda, Alberto Vasconcellos; Teixeira, Anita Fernanda dos Santos; Mancini, Marcelo; Guilherme, Luiz Roberto Guimarães; Curi, Nilton

doi:10.1016/j.jsames.2021.103634

Cited by 3 publications

(2 citation statements)

References 44 publications

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“…In this study, a series of related parameters were tested with 47 shale samples through mineral composition analysis, organic geochemistry, and field emission scanning electron microscopy (FE-SEM), including physical properties, rock electrical parameters and pore structure. All Rocks (Magno et al, 2021). The high-pressure mercury intrusion method (Kang et al, 2023) The sample was observed with a scanning electron microscope (Quanta 200F FE-SEM) (Q.…”

Section: Samples and Methodsmentioning

confidence: 99%

A composite water saturation model of continental mixed shale oil reservoirs based on complex lithology identification

Lai,

Liu,

Tan

et al. 2024

Geological Journal

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The complex lithology, frequent interbedding and strong heterogeneity of the shale oil reservoir in Lucaogou Formation of the Middle Permian in Jimsar Sag lead to the complexity of litho‐electric parameters and the low accuracy of conventional reservoir saturation evaluation methods. Therefore, in this paper, automatic lithologic identification was firstly performed with the optimization inversion method of mineral components and K‐means clustering algorithm, and then, litho‐electric experiments were carried out to determine the litho‐electric parameters of different lithologies. Furthermore, the shale oil reservoir saturation calculation models of different lithologies were optimized and determined. Then, a composite water saturation model (Composite‐SW) based on complex lithology identification was constructed. Finally, the model was verified and analysed with the experimental results of water saturation. The coefficient of correlation between the calculation results of the Composite‐SW model and the core experiment results reached .88, indicating that the model was much better than conventional models. The model can be widely applied in logging evaluation of the continental mixed shale oil reservoir in the study area. The study provides a new idea for oil saturation evaluation of continental shale oil reservoirs and is significant for evaluating other types of shale oil reservoirs.

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Section: Samples and Methodsmentioning

confidence: 99%

A composite water saturation model of continental mixed shale oil reservoirs based on complex lithology identification

Lai,

Liu,

Tan

et al. 2024

Geological Journal

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show abstract

“…Additionally, the Brunauer, Emmett, and Teller (BET) method, using gas adsorption to mineral surfaces, is used to measure specific surface area. Mineralogy may be determined using X-ray diffraction (XRD; Silva et al, 2021) or quantitative evaluation of materials by Scanning Electron Microscopy (QEMSCAN), while rock elemental composition is regularly measured using lithium borate fusion coupled with X-ray fluorescence (XRF) or inductively coupled plasma atomic emission spectroscopy or mass spectroscopy (ICP-AES or ICP-MS).…”

Section: Tracing Weathering Productsmentioning

confidence: 99%

Methods for determining the CO2 removal capacity of enhanced weathering in agronomic settings

et al. 2022

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Recent analysis by the IPCC suggests that, across an array of scenarios, both GHG emissions reductions and various degrees of carbon removal will be required to achieve climate stabilization at a level that avoids the most dangerous climate changes in the future. Among a large number of options in the realm of natural climate solutions, atmospheric carbon dioxide removal (CDR) via enhanced silicate weathering (EW) in global working lands could, in theory, achieve billions of tons of CO2 removal each year. Despite such potential, however, scientific verification and field testing of this technology are still in need of significant advancement. Increasing the number of EW field trials can be aided by formal presentation of effective study designs and methodological approaches to quantifying CO2 removal. In particular, EW studies in working lands require interdisciplinary “convergence” research that links low temperature geochemistry and agronomy. Here, drawing on geologic and agronomic literature, as well as demonstration-scale research on quantifying EW, we provide an overview of (1) existing literature on EW experimentation as a CO2 removal technique, (2) agronomic and geologic approaches to studying EW in field settings, (3) the scientific bases and tradeoffs behind various techniques for quantifying CO2 removal and other relevant methodologies, and (4) the attributes of effective stakeholder engagement for translating scientific research in action. In doing so, we provide a guide for establishing interdisciplinary EW field trials, thereby advancing the verification of atmospheric CO2 in working lands through the convergence of geochemistry and agronomy.

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Proximal sensors for modeling clay mineralogy and characterization of soil textural fractions developed from contrasting parent materials

Silva,

Andrade

et al. 2024

CATENA

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Chemical and mineralogical changes in the textural fractions of quartzite-derived tropical soils, along weathering, assessed by portable X-ray fluorescence spectrometry and X-ray diffraction

Cited by 3 publications

References 44 publications

A composite water saturation model of continental mixed shale oil reservoirs based on complex lithology identification

A composite water saturation model of continental mixed shale oil reservoirs based on complex lithology identification

Methods for determining the CO2 removal capacity of enhanced weathering in agronomic settings

Proximal sensors for modeling clay mineralogy and characterization of soil textural fractions developed from contrasting parent materials

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