Evaluation of pore-fracture microstructure of gypsum rock fragments using micro-CT
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F24%3A00585367" target="_blank" >RIV/67985891:_____/24:00585367 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/24:10486959 RIV/68407700:21670/24:00374709
Result on the web
<a href="https://doi.org/10.1016/j.micron.2024.103633" target="_blank" >https://doi.org/10.1016/j.micron.2024.103633</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.micron.2024.103633" target="_blank" >10.1016/j.micron.2024.103633</a>
Alternative languages
Result language
angličtina
Original language name
Evaluation of pore-fracture microstructure of gypsum rock fragments using micro-CT
Original language description
This study utilized X-ray micro-computed tomography (micro-CT) to investigate weathered gypsum rocks which can or do serve as a rock substrate for endolithic organisms, focusing on their internal pore-fracture micro-structure, estimating porosity, and quantitative comparison between various samples. Examining sections and reconstructed 3D models provides a more detailed insight into the overall structural conditions within rock fragments and the interconnectivity in pore networks, surpassing the limitations of analyzing individual 2D images. Results revealed diverse gypsum forms, cavities, fractures, and secondary features influenced by weathering. Using deep learning segmentation based on the U-Net models within the Dragonfly software enabled to identify and visualize the porous systems and determinate void space which was used to calculate porosity.nThis approach allowed to describe what type of microstructures and cavities is responsible for the porous spaces in different gypsum samples. A set of quantitative analysis of the detected void and modeled networks provided a needed information about the development of the pore system, connectivity, and pore size distribution. Comparison with mercury intrusion porosimetry showed that both methods consider different populations of pores. In our case, micro-CT typically detects larger pores (> 10 μm) which is related to the effective resolution of the scanned images. Still, micro-CT demonstrated to be an efficient tool in examining the internal microstructures of weathered gypsum rocks, with promising implications particularly in geobiology and microbiology for the characterization of lithic habitats.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20903 - Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials
Result continuities
Project
<a href="/en/project/GA21-03322S" target="_blank" >GA21-03322S: Detecting biomarkers of endoliths in evaporitic rocks: terrestrial training for exobiology of Mars</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Micron
ISSN
0968-4328
e-ISSN
1878-4291
Volume of the periodical
181
Issue of the periodical within the volume
JUNE
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
103633
UT code for WoS article
001223178300001
EID of the result in the Scopus database
2-s2.0-85189028580