caa a22 4500 463217675 CHVBK 20180405153202.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s00269-006-0129-3 doi (NATIONALLICENCE)springer-10.1007/s00269-006-0129-3 Basal slip and texture development in calcite: new results from torsion experiments [Elektronische Daten] [D. Barber, H.-R. Wenk, J. Gomez-Barreiro, E. Rybacki, G. Dresen] The deformation behavior of calcite has been of longstanding interest. Through experiments on single crystals, deformation mechanisms were established such as mechanical twinning on $${\mathbf{e}} = \{ \ifmmode\expandafter\bar\else\expandafter\=\fi{1}018\} {\left\langle {40\ifmmode\expandafter\bar\else\expandafter\=\fi{4}1} \right\rangle }$$ in the positive sense and slip on $${\mathbf{r}} = \{ 10\ifmmode\expandafter\bar\else\expandafter\=\fi{1}4\} {\left\langle {20\ifmmode\expandafter\bar\else\expandafter\=\fi{2}\ifmmode\expandafter\bar\else\expandafter\=\fi{1}} \right\rangle }$$ and $${\mathbf{f}} = \{ \ifmmode\expandafter\bar\else\expandafter\=\fi{1}012\} {\left\langle {0\ifmmode\expandafter\bar\else\expandafter\=\fi{2}2\ifmmode\expandafter\bar\else\expandafter\=\fi{1}} \right\rangle },$$ both in the negative sense. More recently it was observed that at higher temperatures $${\mathbf{f}}\{ \ifmmode\expandafter\bar\else\expandafter\=\fi{1}012\} {\left\langle {10\ifmmode\expandafter\bar\else\expandafter\=\fi{1}1} \right\rangle }$$ slip in both senses becomes active and, based on slip line analysis, it was suggested that $${\mathbf{c}}(0001){\left\langle {11\ifmmode\expandafter\bar\else\expandafter\=\fi{2}0} \right\rangle }$$ slip may occur. So far there had been no direct evidence for basal slip, which is the dominant system in dolomite. With new torsion experiments on calcite single crystals at 900K and transmission electron microscopy, this study identifies $$(0001){\left\langle {11\ifmmode\expandafter\bar\else\expandafter\=\fi{2}0} \right\rangle }$$ slip unambiguously by direct imaging of dislocations and diffraction contrast analysis. Including this slip system in polycrystal plasticity simulations, enigmatic texture patterns observed in compression and torsion of calcite rocks at high temperature can now be explained, resolving a long-standing puzzle. Springer-Verlag, 2006 Calcite nationallicence Torsion experiments nationallicence Texture nationallicence Basal slip nationallicence TEM nationallicence Barber D. Physics Centre, University of Essex, CO4 3SQ, Colchester, UK aut Wenk H.-R Department of Earth and Planetary Science, University of California, 94720, Berkeley, CA, USA aut Gomez-Barreiro J. Department of Earth and Planetary Science, University of California, 94720, Berkeley, CA, USA aut Rybacki E. GeoForschungsZentrum, Telegrafenberg, 14473, Potsdam, Germany aut Dresen G. GeoForschungsZentrum, Telegrafenberg, 14473, Potsdam, Germany aut Physics and Chemistry of Minerals Springer-Verlag 34/2(2007-03-01), 73-84 0342-1791 34:2<73 2007 34 269 https://doi.org/10.1007/s00269-006-0129-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00269-006-0129-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barber D. Physics Centre, University of Essex, CO4 3SQ, Colchester, UK aut NATIONALLICENCE 700 1- Wenk H.-R Department of Earth and Planetary Science, University of California, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Gomez-Barreiro J. Department of Earth and Planetary Science, University of California, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Rybacki E. GeoForschungsZentrum, Telegrafenberg, 14473, Potsdam, Germany aut NATIONALLICENCE 700 1- Dresen G. GeoForschungsZentrum, Telegrafenberg, 14473, Potsdam, Germany aut NATIONALLICENCE 773 0- Physics and Chemistry of Minerals Springer-Verlag 34/2(2007-03-01), 73-84 0342-1791 34:2<73 2007 34 269 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer