Peri-Gondwanan Provenance and Geodynamic Evolution of The Guadaiza Nappe (Alpujarride Complex, Betic Cordilleras, Spain): Insights on The Paleotethyan Paleogeography

Based on the LA-ICP-MS U-Pb zircon ages of four metamorphic samples, we discuss geochronology and provenance Guadaiza nappe, an allochthonous unit that underlies Ronda peridotites (Betic Cordilleras, Spain). The nappe is composed Triassic marbles overlying a metapelitic sequence with schists migmatites. Zircons from quartzite interlayered yield maximum depositional age ca. 289 Ma supports age. idiomorphic morphology these Paleozoic crystals lack late-Variscan metamorphism (ca. 300 Ma) proximal source area, suggests were discordantly deposited over sequence, along northern margin Alboran microplate. patterns mainly Paleoproterozoic 1.6–2.5 Ga), Tonian–Stenian 1000 Ma), Ediacaran–Cryogenian 600 500 clusters. These results suggest areas within triangle bound by West African Craton, Metasaharan Craton Hun Superterrane during Paleotethys opening (Silurian–Devonian). A Silurian–Carboniferous deposition for schist protoliths constrained youngest detrital population 443 Variscan their migmatization additional peak around 299 in