Deformation behavior of polymineralic rocks: implications for rheology and seismic properties of the middle to lower crust
Dr. Sandra Piazolo, Dr. Craig O’Neill
Flow laws used in the present geodynamic models are based on observations and experiments on monomineralic samples, even though the presence of the second phases can strongly influence the rheology of the deforming aggregate. The aim of the project is to evaluate flow laws for polymineralic rocks in the lower crust and develop a numerical model which allows application of microstructural data to large-scale geodynamic models. The project involves analyses of the deformation processes and seismic properties of mid to lower crustal rocks, and ice deformation experiments combined with numerical modelling
- Structural geology, microstructural analysis.
- Igneous and metamorphic petrology.
- Experimental deformation and heating of rocks and analogue materials i.e. ice.
- Regional and structural geology of collisional orogens.
Cyprych, D., Brune, S., Piazolo, S., Quinteros, J., 2016. Strain localization in polycrystalline material with second phase particles: Numerical modeling with application to ice mixtures. Geochemistry, Geophysics, Geosystems 17, 1-21.
Cyprych, D., Piazolo, S., Wilson, C.J.L., Luzin, V., Prior, D.J., 2016. Rheology, microstructure and crystallographic preferred orientation of matrix containing a dispersed second phase: Insight from experimentally deformed ice. Earth and Planetary Science Letters 449, 272-281.
Czaplińska, D., Piazolo, S., Almqvist, B.S.G., 2015. The link between rock composition, microstructure, texture and seismic properties in the middle to lower crust: Examples from Sweden and New Zealand. Geotectonic Research 97, p. 128.
Czaplińska, D., Piazolo, S., Zibra, I., 2015. The influence of phase and grain size distribution on the dynamics of strain localization in polymineralic rocks. Journal of Structural Geology 72, 15-32.
Czaplińska, D., Michalik, M., 2011. Plumbogummite series minerals in deformed High Tatra granitoid rocks. Mineralogia – special papers, 38, p. 82-83
Background, experience etc.
Jul 2014: Wellsite geologist during Collisional Orogeny in the Scandinavian Caledonides (COSC)-1 scientific drilling campaign. Are, Sweden
Oct 2012: Field work in Himachal Pradesh, India (geological mapping, structural geology, geothermobarometry) with Dr. Konstanze Stübner (University of Göttingen, Germany)
Jul 2012: ”Magister” (M.Sc.) in Petrology, Mineralogy and Geochemistry, Jagiellonian University (Krakow, Poland)
Jul 2007: ”Licencjat” (B.Sc.) in Geology, Jagiellonian University (Krakóów, Poland)