THE TRIASSIC SERIES OF THE TARIQUIDES (GI BRALTAR ARC), INDICATIVE OFAN ORIGINAL PALEOGEOGRAPHIC ZONE TO THE WEST OF THE MEDITERRANEAN

The ''Tariquides'', a tectonic unit involved in the Gibraltar Arc, com prise some original Triassic deposits. They start (Los Pastores, near Algeciras) with argillites and bright gypsum, followed by often colour ed pelites and sandstones, and dated by Cordevolian (Early Carnian) pa lynomorphs and Upper Ladinian-Lower Carnian Bivalves (mainly Trigoniac ea, Myophoriidae). In continuity, are found some clear dolomites with pelitic horizons, Julian-Lower Tuvalian (''Middle'' Carnian) in age, f ollowed by Upper Triassic (?) thick dolomites (Gibraltar, Jebel Moussa ). Tariquide Triassic domain was probably located between the Subbetic (germano-andalusian) realm and the Alpine one, known in the present i nternal betic-riffian zones.