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Allochthonous
terranes involved
in the Variscan
suture of Galicia
(NW Iberia):
A review of
their origin and
tectonothermal
evolution
Ricardo Arenas
1
, Sonia Sánchez Martínez
1
,
Rubén Díez Fernández
1
, Axel Gerdes
2
,
Jacobo Abati
1
, Javier Fernández-Suárez
1
, Pilar
Andonaegui
1
, Pablo González Cuadra
3
, Alicia
López Carmona
1
, Richard Albert
1
, José Manuel
Fuenlabrada
4
, Francisco J.Rubio Pascual
3
1-Departamento de Petrología y Geoquímica e Instituto
de Geociencias (UCM, CSIC), Universidad Complutense,
28040 Madrid, Spain.
(arenas@geo.ucm.es)
2-Institut für Geowissenschaften, Goethe-University
Frankfurt, 60438 Frankfurt am Main, Germany.
3-Instituto Geológico y Minero de España (CSIC), 28760
Madrid, Spain.
4-CAI de Geocronología y Geoquímica Isotópica,
Universidad Complutense, 28040 Madrid, Spain.
3. GEOLOGICAL FRAMEWORK
CONTENT
Extended abstract
Introduction
Allochthonous Complexes and terranes from
Galicia (NW Iberian Massif)
Terrane typology and correlation
The Órdenes Complex
The Cabo Ortegal Complex
The Malpica-Tui Complex
Basal Units
Lithologies and chemical composition
High pressure metamorphism
Structural evolution
Ophiolitic Units
Upper Ophiolitic Units
Careón Ophiolite
Purrido Ophiolite
Moeche Ophiolite
Lower Ophiolitic Units
Vila de Cruces Ophiolite
Bazar Ophiolite
Upper Units
Intermediate Pressure Upper Units
Lithologies and chemical composition
Tectonothermal evolution: Arc–related event
and collisional reworking
High Pressure and High Temperature Upper
Units
Lithologies and tectonothermal evolution
Chronology of the metamorphic events
Somozas Mélange
Provenance of the continental terranes.
Paleogeography and Variscan evolution
Conclusions
Acknowledgements
References