caa a22 4500 445390050 CHVBK 20180317143043.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s00710-011-0147-9 doi (NATIONALLICENCE)springer-10.1007/s00710-011-0147-9 Ruiz Cruz Maria Facultad de Ciencias, Campus de Teatinos, 29071, Málaga, Spain aut Origin of atoll garnet in schists from the Alpujárride Complex (Central zone of the Betic Cordillera, Spain): Implications on the P-T evolution [Elektronische Daten] [Maria Ruiz Cruz] Atoll-shaped and normal garnets from schists of the Betic Cordillera (Spain) were studied by electron microprobe, scanning electron microscopy and microstructural electron backscattered scanning diffraction (EBSD). Medium-grade schists contain a textural variety of atoll garnets, characterized by the presence of muscovite, annite, and quartz as main "core” phases. Zoning patterns, EBSD analyses and themobarometric data indicate that the micaceous intergrowths formed in most cases through breakdown of a first garnet generation, with orientation of micas being controlled by garnet (c*mica//[111]*Grt and c*mica//[110]*Grt as main crystallographic relationships). Rings formed from multiple nucleation and coalescence, with orientation being controlled, in some cases, by the relics of the initial garnet and more generally by mica orientation. P-T estimates indicate that the first stage of garnet growth occurred at relatively high P (9-12kbar/500-550°C) whereas the second metamorphic stage occurred at lower P and slightly higher T conditions (5-7kbar/500-600°C). Springer-Verlag, 2011 Mineralogy and Petrology Springer Vienna 101/3-4(2011-03-01), 245-261 0930-0708 101:3-4<245 2011 101 710 https://doi.org/10.1007/s00710-011-0147-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00710-011-0147-9 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ruiz Cruz Maria Facultad de Ciencias, Campus de Teatinos, 29071, Málaga, Spain aut NATIONALLICENCE 773 0- Mineralogy and Petrology Springer Vienna 101/3-4(2011-03-01), 245-261 0930-0708 101:3-4<245 2011 101 710 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer