The Late Triassic–Middle Jurassic Passive Margin Stage

• Autores: Juan Jose Gomez Caro, Roque Aguado Merlo, Ana Cristina Azeredo, José Emilio Cortés Nemesio, Luís Vítor Duarte, Luis O'Dogherty Luy
• Localización: The Geology of Iberia. A Geodynamic Approach.: Volume 3: The Alpine Cycle / coord. por Cecilio Quesada Ochoa, José Tomás de Oliveira, 2019, ISBN 978-3-030-11294-3, págs. 113-167
• Idioma: inglés
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• Dialnet Métricas: 4 Citas
• Resumen

  • During the Late Triassic-Middle Jurassic interval Iberia acted as a passive margin, where extensional or transtensional faulting, linked to the propagation of the Central Atlantic and the opening of the Ligurian Tethys, generated a NW and NE trending fault system that conditioned facies and thickness distribution. These faults also favored the implantation of mantle plumes and associated volcanism, giving rise to the evolution from a magma-poor passive margin, during the latest Triassic to the Pliensbachian, to a magma-rich passive margin, which developed from the Pliensbachian to the Bajocian. Progressive extensional faulting, that propagated from east to west reached a climax during the Toarcian, probably related to the onset of sea-floor spreading in the northern part of the Central Atlantic.