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Relevant bibliographies by topics / Calcite twins

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Journal articles

Academic literature on the topic 'Calcite twins'

Author: Grafiati

Published: 25 May 2024

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Journal articles on the topic "Calcite twins"

1

Lacombe, Olivier, Camille Parlangeau, Nicolas E. Beaudoin, and Khalid Amrouch. "Calcite Twin Formation, Measurement and Use as Stress–Strain Indicators: A Review of Progress over the Last Decade." Geosciences 11, no. 11 (2021): 445. http://dx.doi.org/10.3390/geosciences11110445.

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Mechanical twins are common microstructures in deformed calcite. Calcite twins have been used for a long time as indicators of stress/strain orientations and magnitudes. Developments during the last decade point toward significant improvements of existing techniques as well as new applications of calcite twin analysis in tectonic studies. This review summarises the recent progress in the understanding of twin formation, including nucleation and growth of twins, and discusses the concept of CRSS and its dependence on several factors such as strain, temperature and grain size. Classical and rece

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2

Parlangeau, Camille, Alexandre Dimanov, Olivier Lacombe, Simon Hallais, and Jean-Marc Daniel. "Uniaxial compression of calcite single crystals at room temperature: insights into twinning activation and development." Solid Earth 10, no. 1 (2019): 307–16. http://dx.doi.org/10.5194/se-10-307-2019.

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Abstract. E-twinning is a common plastic deformation mechanism in calcite deformed at low temperature. Strain rate, temperature and confining pressure have negligible effects on twinning activation which is mainly dependent on differential stress. The critical resolved shear stress (CRSS) required for twinning activation is dependent on grain size and strain hardening. This CRSS value may obey the Hall–Petch relation, but due to sparse experimental data its actual evolution with grain size and strain still remains a matter of debate. In order to provide additional constraints on twinning activ

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3

Schuster, Roman, Gerlinde Habler, Erhard Schafler, and Rainer Abart. "Intragranular deformation mechanisms in calcite deformed by high-pressure torsion at room temperature." Mineralogy and Petrology 114, no. 2 (2020): 105–18. http://dx.doi.org/10.1007/s00710-019-00690-y.

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AbstractPolycrystalline calcite was deformed to high strain at room-temperature and confining pressures of 1–4 GPa using high-pressure torsion. The high confining pressure suppresses brittle failure and allows for shear strains >100. The post-deformation microstructures show inter- and intragranular cataclastic deformation and a high density of mechanical e$$ \left\{01\overline{1}8\right\} $$011¯8 twins and deformation lamellae in highly strained porphyroclasts. The morphologies of the twins resemble twin morphologies that are typically associated with substantially higher deformation tempe

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4

Mirijam, Vrabec, Rogan Šmuc Nastja, and Vrabec Marko. "Calcite deformation twins in Pohorje marbles." Geologija 61, no. 1 (2018): 73–84. http://dx.doi.org/10.5474/geologija.2018.005.

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5

Németh, Péter. "Diffraction Features from (101¯4) Calcite Twins Mimicking Crystallographic Ordering." Minerals 11, no. 7 (2021): 720. http://dx.doi.org/10.3390/min11070720.

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During phase transitions the ordering of cations and/or anions along specific crystallographic directions can take place. As a result, extra reflections may occur in diffraction patterns, which can indicate cell doubling and the reduction of the crystallographic symmetry. However, similar features may also arise from twinning. Here the nanostructures of a glendonite, a calcite (CaCO3) pseudomorph after ikaite (CaCO3·6H2O), from Victoria Cave (Russia) were studied using transmission electron microscopy (TEM). This paper demonstrates the occurrence of extra reflections at positions halfway betwe

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6

Rutter, Ernest, David Wallis, and Kamil Kosiorek. "Application of Electron Backscatter Diffraction to Calcite-Twinning Paleopiezometry." Geosciences 12, no. 6 (2022): 222. http://dx.doi.org/10.3390/geosciences12060222.

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Electron backscatter diffraction (EBSD) was used to determine the orientation of mechanically twinned grains in Carrara marble experimentally deformed to a small strain (≤4%) at room temperature and at a moderate confining pressure (225 MPa). The thicknesses of deformation twins were mostly too small to permit determination of their orientation by EBSD but it proved possible to measure their orientations by calculating possible twin orientations from host grain orientation, then comparing calculated traces to the observed twin traces. The validity of the Turner & Weiss method for principal

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7

Lacombe, Olivier. "Calcite Deformation Twins: From Crystal Plasticity to Applications in Geosciences." Geosciences 12, no. 7 (2022): 280. http://dx.doi.org/10.3390/geosciences12070280.

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8

Côté, A. S., R. Darkins, and D. M. Duffy. "Deformation twinning and the role of amino acids and magnesium in calcite hardness from molecular simulation." Physical Chemistry Chemical Physics 17, no. 31 (2015): 20178–84. http://dx.doi.org/10.1039/c5cp03370e.

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We employ classical molecular dynamics to calculate elastic properties and to model the nucleation and propagation of deformation twins in calcite, both as a pure crystal and with magnesium and aspartate inclusions.

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9

González-Casado, José M., and Carmen Garcı́a-Cuevas. "Calcite twins from microveins as indicators of deformation history." Journal of Structural Geology 21, no. 7 (1999): 875–89. http://dx.doi.org/10.1016/s0191-8141(99)00081-4.

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10

Kang, Seong-Seung, Jun-Mo Kim, and Bo-An Jang. "Paleostress fields from calcite twins in the Pyeongan Supergroup, South Korea." Island Arc 14, no. 2 (2005): 137–49. http://dx.doi.org/10.1111/j.1440-1738.2005.00462.x.

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