@misc{10481/72026,
year = {2021},
month = {11},
url = {http://hdl.handle.net/10481/72026},
abstract = {We study the structure of the Llevant ranges in Mallorca with special emphasis on the
Cenozoic extensional evolution of the island, which we integrate in a new geodynamic model for the
Westernmost Mediterranean. Mallorca underwent two Cenozoic rifting phases in the Oligocene and
Serravallian, before and after the development of its Foreland Thrust Belt (FTB). The first extensional
event produced Oligocene semigrabens (≈29–23 Ma) that were inverted during the Early-Middle Miocene
(19–14 Ma) WNW-directed FTB development. The second rifting event produced the extensional collapse
of the Mallorca FTB during the Serravallian (≈14–11 Ma). This later rifting was polyphasic, with two
orthogonal extensional systems, producing first NE-SW, and then NW-SE extension. The Oligocene
extension affected a major part of the Western Mediterranean, opening the Liguro-Provençal and other
basins after the collapse of the Palaeogene AlKaPeCa orogen, and Mallorca, its former hinterland.
Continued plate convergence nucleated a new subduction system in the Early Miocene that initiated
along the Ibiza transform, producing the Mallorca WNW-directed FTB and subduction of the South-East
Iberian passive margin. This process individualized the Betic-Rif slab and initiated its westward retreat.
Serravallian extension occurred at the northern edge of the subduction system coeval to the Algero-
Balearic basin opening. Extension initiated toward the SW direction of slab tearing and later rotated to
a NW-SE direction, probably in response to flexural and isostatic rebound. Through these processes the
Alboran domain archipelago was driven toward the southwest until the Late Miocene, contributing to the
present isolation of Mallorca from its Betic hinterland.},
organization = {Spanish Science and Innovation Ministry Project (State Research Agency)	PID2019-107138RB-I00/SRA},
organization = {Junta de Andalucia	P18-RT-36332	
RMN-131	
RMN-148},
organization = {European Regional Development Fund (ERDF) through the project "RISKCOAST" of the Interreg SUDOE Programme	SOE3/P4/E0868},
organization = {Universidad de Granada/CBUA},
publisher = {American Geophysical Union},
keywords = {Mallorca},
keywords = {Extension},
keywords = {Western Mediterranean},
keywords = {Geodynamic evolution},
title = {Two Cenozoic Extensional Phases in Mallorca and Their Bearing on the Geodynamic Evolution of the Western Mediterranean},
doi = {10.1029/2021TC006868},
author = {Moragues, Lluis and Ruano Roca, Patricia and Azañón Hernández, José Miguel and Garrido, Carlos J. and Booth Rea, Guillermo},
}