@misc{10481/98971,
year = {2020},
month = {6},
url = {https://hdl.handle.net/10481/98971},
abstract = {Three crustal-scale sequentially restored cross-sections along the Central External Betic Cordillera enable us to
pinpoint the role of extreme crustal thinning, tectonic inheritance and salt tectonics during the evolution of the
South-Iberian paleomargin from Mesozoic rifting to Cenozoic continental subduction. This interpretation puts
forward the existence of a former highly extended Mesozoic rift system, namely the Subbetic Basin. The basin
comprises three main domains that coincide with the classical zoning of the External Betics: (i) The Intermediate
units in the northern basin margin represent primary thick minibasins separated by salt walls; (ii) the External
Subbetic units attest an inflated salt body in a central trough; and (iii) the Median and Internal Subbetic units in
the southern basin margin are analogous to a group of primary minibasins with intercalations of submarine
volcanic rocks overlying hyperextended crust. Shortening led to the extrusion of a salt canopy and the development
of secondary minibasins. Furthermore, the tectonic inversion of the Subbetic Basin created two major
thrusts sheets detached at the Upper Triassic evaporites, accommodating a shortening of �100–145 km at early
Eocene-middle Miocene time. Compression reshaped the hyperextended domain into a subduction trench, and
the former transfer faults into tear faults. Ongoing shortening led to the subduction of the South-Iberian paleomargin
beneath the Albor�an Domain lithosphere. Our results provide a new perspective on the inversion of
segmented rift basins partly floored by mantle rocks and call for a major reconsideration on the tectonic architecture
and evolution of the Betic-Rif Cordillera.},
title = {Evolution of the South-Iberian paleomargin: From hyperextension to continental subduction},
doi = {10.1016/j.jsg.2020.104122},
author = {Pedrera, Antonio and Ruiz-Constán, A. and García Senz, Jesús and Azor Pérez, Antonio and Marín Lechado, Carlos and Ayala, Conxi and Díaz de Neira, José Alberto and Rodríguez Fernández, Luis Roberto},
}