Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice?
Maria-Gema Llorens,Albert Griera,Paul D. Bons,Ilka Weikusat,David J. Prior,Enrique Gomez-Rivas,Tamara de Riese,Ivone Jimenez-Munt,Daniel García-Castellanos,and Ricardo A. Lebensohn
Departament de Mineralogia, Petrologia i Geologia Aplicada,
Facultat de Ciències de la Terra, Universitat de Barcelona, Martí i
Franquès s/n, 08028 Barcelona, Spain
Tamara de Riese
Department of Geosciences, Eberhard Karls University Tübingen,
Wilhemstr. 56, 72074 Tübingen, Germany
Ivone Jimenez-Munt
Geosciencies Barcelona CSIC, Lluis Sole i Sabaris s/n, 08028
Barcelona, Spain
Daniel García-Castellanos
Geosciencies Barcelona CSIC, Lluis Sole i Sabaris s/n, 08028
Barcelona, Spain
Ricardo A. Lebensohn
Theoretical Division, Los Alamos National Laboratory, Los Alamos,
NM, 87545, USA
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Polar ice is formed by ice crystals, which form fabrics that are utilised to interpret how ice sheets flow. It is unclear whether fabrics result from the current flow regime or if they are inherited. To understand the extent to which ice crystals can be reoriented when ice flow conditions change, we simulate and evaluate multi-stage ice flow scenarios according to natural cases. We find that second deformation regimes normally overprint inherited fabrics, with a range of transitional fabrics.
Polar ice is formed by ice crystals, which form fabrics that are utilised to interpret how ice...
