Exhumation constraints for the lower Nevado-Filabride Complex (Betic Cordillera, SE Spain): a Raman thermometry and Tweequ multiequilibrium thermobarometry approach

• DOI: 10.2113/176.5.403
• Publication Date: 2015-02-09T20:07:50Z
• Authors: Romain Augier; Guillermo Booth-Rea; Phillipe Agard; José Miguel Mart...; Laurent Jolivet; José Miguel Azan...
• Keywords: [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics; [SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics; 01 natural sciences; 0105 earth and related environmental sciences

Abstract The HP/LT rocks of the Nevado-Filabride complex (eastern Betic Cordillera) were exhumed during Serravallian but knowledge their retrograde P-T evolution remains fragmentary and not established for all its tectonic units. present paper places detailed constraints on two deeper units complex, namely Ragua Calar Alto in order to constrain exhumation role km-thick Dos Picos shear zone separating them. Our approach uses both TWEEQU software multiequilibrium thermobarometry Raman spectrometry thermometry. study enables [i] estimate peak-temperature conditions (c. 520°C) then establish first path unit, [ii] conclude that suffered comparable metamorphic evolutions with [iii] a well constrained HT excursion following strong decompression characterised by limited heating. also infer major was post-metamorphic thrust occurring final retrogression stages. These results point processes intermediate between those syn– post– orogenic contexts late Betics.