Time for anisotropy: The significance of mechanical anisotropy for the development of deformation structures

Journal Article · 20 May 2018 · Journal of Structural Geology

DOI: https://doi.org/10.1016/j.jsg.2018.04.019 · OSTI ID:1440456

Ran, Hao ^[1]; de Riese, Tamara ^[2]; Llorens, Maria-Gema  ^[3]; Finch, Melanie A. ^[2]; Evans, Lynn A. ^[4]; Gomez-Rivas, Enrique  ^[5]; Griera, Albert ^[6]; Jessell, Mark W. ^[7]; Lebensohn, Ricardo A. ^[8]; Piazolo, Sandra  ^[9]; Bons, Paul D. ^[2]

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1. Eberhard Karls Univ. of Tübingen (Germany). Dept. of Geosciences; China Univ. of Geosciences, Beijing (China). School of Earth Sciences and Resources
2. Eberhard Karls Univ. of Tübingen (Germany). Dept. of Geosciences
3. Eberhard Karls Univ. of Tübingen (Germany). Dept. of Geosciences; Autonomous Univ. of Barcelona (Spain). Dept. of Geology
4. Monash Univ., Melbourne, VIC (Australia). School of Earth, Atmosphere and Environmental Sciences
5. Univ. of Barcelona (Spain). Dept. of Mineralogy, Petrology and Applied Geology; Univ. of Aberdeen, Scotland (United Kingdom). School of Geosciences
6. Autonomous Univ. of Barcelona (Spain). Dept. of Geology
7. Univ. of Western Australia, Perth, WA (Australia). Centre for Exploration Targeting. School of Earth Sciences
8. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
9. Univ. of Leeds (United Kingdom). School of Earth and Environment

The forty-year history of the Journal of Structural Geology has recorded an enormous increase in the description, interpretation and modelling of deformation structures. Amongst factors that control deformation and the resulting structures, mechanical anisotropy has proven difficult to tackle. Using a Fast Fourier Transform-based numerical solver for viscoplastic deformation of crystalline materials, we illustrate in this paper how mechanical anisotropy has a profound effect on developing structures, such as crenulation cleavages, porphyroclast geometry and the initiation of shear bands and shear zones.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Eberhard Karls Univ. of Tübingen (Germany); China Univ. of Geosciences, Beijing (China); Autonomous Univ. of Barcelona (Spain)
• Sponsoring Organization: USDOE; China Scholarship Council (CSC); Government of Catalonia's Secretariat for Universities and Research of the Department of Economy and Knowledge
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1440456
• Report Number(s): LA-UR--18-23499
• Journal Information: Journal of Structural Geology, Journal Name: Journal of Structural Geology Vol. 125; ISSN 0191-8141
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English