Strain localization: analog modeling and anisotropy of magnetic susceptibility
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F23%3A00574301" target="_blank" >RIV/67985530:_____/23:00574301 - isvavai.cz</a>
Result on the web
<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022GC010630" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022GC010630</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2022GC010630" target="_blank" >10.1029/2022GC010630</a>
Alternative languages
Result language
angličtina
Original language name
Strain localization: analog modeling and anisotropy of magnetic susceptibility
Original language description
The majority of the strain in Earth crust and upper mantle is localized to the high strain zones developed at ductile-to-brittle condition at kilometer-to-micrometer scale. Therefore, they represent the key to understanding the deformation evolution of the lithosphere. The finite strain pattern recorded within these zones has been therefore a subject of research in geology. The methods studying rock magnetism such as the anisotropy of magnetic susceptibility (AMS) are frequently used techniques to characterize and quantify deformation and flow record in rocks. Numerous sedimentary, subsolidus and submagmatic deformation zones exhibit typical evolution of the AMS ellipsoid across the strain gradient suggesting indirect not straightforward correlation between AMS and strain ellipsoids. To document spatiotemporal and internal fabric evolution during strain localization, pure shear, simple shear, and shear zone (SZ) analog experiments were performed using shear-thinning thixotropic material of plaster of Paris. The experimental results closely resemble the record from natural SZs in sedimentary rock systems but also in subsolidus SZs and submagmatic mushy systems. The magnetic fabric evolution across deformation zones is interpreted to be associated with the intersection and transposition of preexisting primary fabric with shear fabrics and evolution of synkinematic subfabrics. Their development is attributed to localization of deformation at microscale due to the self-organized slip of anisometric particles forming microshear planes reflecting the symmetry of deformation. The experimental results when confronted with the natural examples implies that the localization and partitioning of deformation is one of the most important factors for the interpretation of AMS in deformation zones.
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
10505 - Geology
Result continuities
Project
<a href="/en/project/GA22-12828S" target="_blank" >GA22-12828S: New perspectives in magnetic fabric interpretation through 3D microstructural analysis, numerical modelling and quantum mechanical description</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geochemistry, Geophysics, Geosystems
ISSN
1525-2027
e-ISSN
1525-2027
Volume of the periodical
24
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
19
Pages from-to
e2022GC010630
UT code for WoS article
001032220100001
EID of the result in the Scopus database
2-s2.0-85148541802