Analog Models of Fold-and-Thrust Wedges in Progressive Arcs: A Comparison With the Gibraltar Arc External Wedge

Jiménez‐Bonilla, Alejandro; Crespo‐Blanc, Ana; Balanyá, Juan Carlos; Expósito, Inmaculada; Azpiroz, Manuel Dı́az

doi:10.3389/feart.2020.00072

Cited by 15 publications

(29 citation statements)

References 71 publications

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“…This timing and its WNW‐ to NW‐directed kinematics coincide with the main deformation phase in the External Betics and the Flysch Trough accretionary wedge, including Burdigalian sediments in the nappe stack (e.g., de Capoa et al., 2007; Guerrera et al., 2005; Luján et al., 2006). FTB development in the Betics and the Gulf of Cadiz continued at least until the Late Miocene (Iribarren et al., 2007; Jiménez‐Bonilla et al., 2016; Martín‐Martín, Guerrera, et al., 2018), accompanied by important strike‐slip faulting (e.g., de Galdeano & Vera, 1992; Geel & Roep, 1998; Jiménez‐Bonilla et al., 2020; Martín‐Martín, Estévez, et al., 2018; Pérez‐Valera et al., 2013).…”

Section: Discussionmentioning

confidence: 99%

Two Cenozoic Extensional Phases in Mallorca and Their Bearing on the Geodynamic Evolution of the Western Mediterranean

et al. 2021

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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.

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Section: Discussionmentioning

confidence: 99%

Two Cenozoic Extensional Phases in Mallorca and Their Bearing on the Geodynamic Evolution of the Western Mediterranean

et al. 2021

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“…Similar effects have been shown by Luth et al (2013), where new faults nucleate at indenter dips. Overall, our results are in line with previous analogue modelling studies where the curvature of fold and thrust belts in front of an indenter are controlled by the indenter geometry (Marshak, 1988;Marshak et al, 1992;Zweigel et al, 1998;Costa and Speranza, 2003;Crespo-Blanc and González-Sánchez, 2005;Luth et al, 2013;Jiménez-Bonilla et al, 2020). Similar to our results, these studies exhibit a narrowing of the deformed area when deformation is transferred from the frontal to the lateral indenter margin (e.g., Marshak, 1988;Crespo-Blanc and González-Sánchez, 2005;Luth et al, 2013).…”

Section: Effects Of the Rigid Indenter Geometry On The Strain Partiti...supporting

confidence: 92%

Strain partitioning during formation of oroclines and indentation

Krstekanić¹

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“…The orogen-parallel extension in the Polish Outer Carpathians and its effect on the orogen evolution, although mentioned in several papers (see Introduction), so far is not sufficiently elaborated. Nonetheless, such a process should be anticipated based on theoretical assumptions, modelling and well-documented observations in the Carpathians and other thrust and fold belts [6][7][8][9][29][30][31]33,34,40,108]. We suggest that numerous thrust-perpendicular or oblique normal faults visible in recent geological maps [15] might have originated, or at least be reshaped, by this process.…”

Section: Discussionmentioning

confidence: 87%

“…The evolution and strain patterns of arcuate mountain belts had been widely investigated based on theoretical considerations, analogue and digital modelling, paleomagnetic and magnetic susceptibility investigations as well as field examples (e.g., [6][7][8]12,[25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]). Hindle and Burkhard [34] summarized most of the proposed models and distinguished three end-members of arcuate mountain belts, i.e., oroclines, "piedmont glaciers" and primary arcs.…”

Section: Introductionmentioning

confidence: 99%

Seismic-Scale Evidence of Thrust-Perpendicular Normal Faulting in the Western Outer Carpathians, Poland

Barmuta

Starzec

Schnabel³

2021

Minerals

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Based on the interpretation of 2D seismic profiles integrated with surface geological investigations, a mechanism responsible for the formation of a large scale normal fault zone has been proposed. The fault, here referred to as the Rycerka Fault, has a predominantly normal dip-slip component with the detachment surface located at the base of Carpathian units. The fault developed due to the formation of an anticlinal stack within the Dukla Unit overlain by the Magura Units. Stacking of a relatively narrow duplex led to the growth of a dome-like culmination in the lower unit, i.e., the Dukla Unit, and, as a consequence of differential uplift of the unit above and outside the duplex, the upper unit (the Magura Unit) was subjected to stretching. This process invoked normal faulting along the lateral culmination wall and was facilitated by the regional, syn-thrusting arc–parallel extension. Horizontal movement along the fault plane is a result of tear faulting accommodating a varied rate of advancement of Carpathian units. The time of the fault formation is not well constrained; however, based on superposition criterion, the syn -thrusting origin is anticipated.

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Analog Models of Fold-and-Thrust Wedges in Progressive Arcs: A Comparison With the Gibraltar Arc External Wedge

Cited by 15 publications

References 71 publications

Two Cenozoic Extensional Phases in Mallorca and Their Bearing on the Geodynamic Evolution of the Western Mediterranean

Two Cenozoic Extensional Phases in Mallorca and Their Bearing on the Geodynamic Evolution of the Western Mediterranean

Strain partitioning during formation of oroclines and indentation

Seismic-Scale Evidence of Thrust-Perpendicular Normal Faulting in the Western Outer Carpathians, Poland

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