## 2 Geological Setting
The Western Alboran Basin [54] and the Guadalquivir Foreland Basin [55] are the main basins. Finally, some intramontane basins developed, such as the Granada and Guadix-Baza basins (Figure 1) [56]. Deformation in the Betic Cordillera began during the Paleocene-Eocene epoch [57], involving shortening and significant dextral displacement between the Alboran and South Iberian domains [23]. After that, during the early Miocene, the Betic Cordillera experienced the main shortening and back-arc extension [58; 59]. The Alboran Domain was subjected to intense extension, leading to crustal thinning, the exhumation of metamorphic complexes, and the formation of low-angle normal faults. These low-angle faults separated the main metamorphic complexes: the Malaguide-Alpujarride brittle extensional contact during the Burdigalian-Langhian [60], and after that, westward-directed Mecina extensional detachment caused the exhumation of the metamorphic Nevado-Filabride Complex [22; 25; 26; 61]. Following this event, stretching continued in an E-W to ENE-WSW direction with a top-to-west sense of shear, resulting in the formation of a-type dome metamorphic core complexes and leading to the initiation of intramontane basins [62; 63]. Dextral strike-slip faults developed south of the Sierra Nevada dome, resulting in the Alpujarras Corridor [64], and to the north along the contact between the Alboran and South Iberian domains [65; 66]. Meanwhile, thrusting affected the South Iberian domain [14], forming a fold-and-thrust belt due to the thrusting of the Alboran Domain over the Iberian margin [50; 67]. In the central Betics, the main shortening happened between the Aquitanian and Burdigalian, evidenced by thin-skinned style deformation [68; 69]. The Guadalquivir Basin started developing in the Langhian [70]. Later, the Betic Cordillera mountain front was affected by N-S extension [23] related to gravitational dismantling by WNW-ESE normal faults until the Serravallian [71]. Simultaneously, to the north of the Granada Basin, N-S normal faults accommodated arc-parallel extension [72] related to the westward displacement in the Alboran Domain [71; 73]. To the west of the Granada Basin, westward-verging thrust activity connected with the Mecina detachment was reported [17]. The Eurasia-Nubia NW-SE convergence and orthogonal extension have affected the Betic Cordillera since the Tortonian. In the Alboran Domain, the development of NE-SW and E-W folds amplified the domal geometry of the Sierra Nevada [24; 35]. Meanwhile, NE-SW orthogonal extension continued producing NW-SE normal faults, conjugated E-W oriented dextral and normal faults, and NE-SW sinistral to normal faults, individualizing the Neogene-Quaternary basins [23; 35]. In the South Iberian Domain, the NW-directed shortening continued [73] with the progression of the deformation and north-westward migration of the Guadalquivir Basin [72]. Meanwhile, NW-SE to N-S faults accommodated the arc-parallel extension [74]. Many models have been proposed to understand the recent evolution of the Betic Cordillera. They can be summarized into two main groups. (i) Delamination models [14; 15; 75; 76; 77] suggest an orogenic root that becomes detached through lithospheric delamination [15; 76] or mantle convection [14] during the Eurasia-Nubia convergence in Late Oligocene or Early Miocene. This lithospheric removal caused a radial crustal extension that ended in the Late Miocene due to the dominance of the Eurasia-Nubia convergence [75]. (ii) Subduction models of lithosphere below the Alboran Domain present many variations considering rollback and/or slab detachment [78; 79; 80; 81; 82]. The subduction begins due to a northward dipping slab attached to the African margin, which later was fragmented. The Alboran Domain moved westward associated with the rollback of one slab fragment [78; 79; 82; 83]. The westward tearing detached the northward dipping slab from Africa, while in the Iberian margin, it is still partly attached.