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Journal of the Geological Society; 1991; v. 148; issue.5; p. 801-804;
DOI: 10.1144/gsjgs.148.5.0801
© 1991 Geological Society of London

SHORT PAPER

Eclogites of the Ojén nappe: a record of subduction in the Alpujárride complex (Betic Cordilleras, southern Spain)

J. M. TUBIA1 & J. I. GIL IBARGUCHI2

1 Departamento de Estratigrafía, Geodinámica y Paleontología &
2 Departamento de Mineralogía y Petrología, Univ. del País Vasco-E.H.U., Aptdo. 644, 48080 Bilbao, Spain

Eclogites interlayered with amphibolites and migmatites occur in an upper unit (OjCn nappe) of the Alpujarride complex (Betic Cor- dilleras). Estimates of P-T conditions reveal a retrograde meta-morphic path from an edogitic stage at >15 kbar and c. 730 °C, to amphibolite-facies conditions at 5-8 kbar or less and c. 650 °C. The Ronda peridotites belonging to the uppermost Alpujarride nappe (Los Reales nappe) structurally overlie the eclogite-bearing unit. It is suggested that eclogitic metamorphism and overthrusting of the peridotites reflect dfierent stages of the same convergent episode.




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