Rates of Late Neogene Deformation Along the Southwestern Margin of Adria, Southern Apennines Orogen, Italy

Ferranti, Luigi; Oldow, John S.

doi:10.1007/1-4020-4235-3_08

Cited by 5 publications

(11 citation statements)

References 41 publications

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“…Although the spreading rate in the North Atlantic was high during the late Paleocene–early Eocene [ Jones et al ., , Figure ], the rate of subduction may outpace the convergent rate due to the negative buoyance of the subducting slab [e.g., Royden , ], which may be caused by the ecologitization of oceanic plateaux on the Farallon plate [ Liu et al ., ]. Uplift in the Wyoming province during the early Eocene was associated with the initial stage of extensional tectonics in the Sevier fold‐and‐thrust belt [e.g., Constenius , ; Foster et al ., ; Cubley et al ., ], and similar synchronous foreland uplift and hinterland extension has been documented in the southern Apennines associated with crustal delamination [ Ferranti and Oldow , ].…”

Section: Discussionmentioning

confidence: 97%

“…After subduction, the flat slab steepened [e.g., Coney and Reynolds , ; Constenius , ] because of negative buoyancy of the detaching slab with respect to surrounding mantle, causing bending and trenchward retreat of the slab. Slab rollback and removal have been shown to affect uplift and exhumation on the overriding plate [e.g., Gvirtzman and Amos , ; Wortel and Spakman , ; Buiter et al ., ; Ferranti and Oldow , ; Brun and Faccenna , ; Humphrey , 2009; Kay and Coira , ; Göğüş et al ., ]. Slab rollback may have similar effects as retreating delamination of the mantle lithosphere, causing crustal deformation and magmatism on the overriding plate as a response to peeling of the mantle lithosphere away from the crust [ Krystopowicz and Currie , 2013].…”

Section: Discussionmentioning

confidence: 99%

“…Slab rollback can additionally induce surface deformation by delaminating the mantle lithosphere of the overriding continental plate [ Brun and Faccenna , ; Göğüş et al ., ]. Although slab rollback is often associated with extensional tectonics in the overriding plate, Ferranti and Oldow [] documented synchronous foreland uplift and hinterland extension in the southern Appennines orogen associated with the rollback of the subducted Adriatic slab. In the southern Puna Plateau‐Sierras Pampeanas in South America, an analogue of the Sevier‐Laramide province in the Cordilleran orogenic belt, rollback of the low‐angle subducted Nazca oceanic plate, and induced mantle lithosphere delamination of the overriding continental plate have been suggested as driving the uplift of the thick‐skinned Sierras Pampeanas [ Kay and Coira , ].…”

Section: Introductionmentioning

confidence: 99%

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Late Cretaceous–early Eocene Laramide uplift, exhumation, and basin subsidence in Wyoming: Crustal responses to flat slab subduction

2014

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Low-angle subduction of the Farallon oceanic plate during the Late Cretaceous-early Eocene is generally considered as the main driver forming the high Rocky Mountains in Wyoming and nearby areas. How the deformation was transferred from mantle to upper crust over the great duration of deformation (~40 Myr) is still debated. Here, we reconstruct basin subsidence and compile paleoelevation, thermochronology, and provenance data to assess the timing, magnitude, and rates of rock uplift during the Laramide deformation. We reconstruct rock uplift as the sum of surface uplift and erosion constrained by combining paleoelevation and exhumation with regional stratigraphic thickness and chronostratigraphic information. The amount (and rate) of rock uplift of individual Laramide ranges was less than 2.4-4.8 km (~0.21-0.32 mm/yr) during the early Maastrichtian-Paleocene (stage 1) and increased to more than~3 km (~0.38-0.60 mm/yr) during the late Paleocene-early Eocene (stage 2). Our quantitative constraints reveal a two-stage development of the Laramide deformation in Wyoming and an increase of rock uplift during stage 2, associated with enhanced intermontane basin subsidence. Exhumation and uplift during stage 1 is consistent with eastward migration of Cordilleran deformation associated with low-angle subduction, whereas the change in exhumation during stage 2 seems to follow a southwestward trend, which requires an alternative explanation. We here suggest that the increase of rock uplift rate during the late Paleocene-early Eocene and the southwestward younging trend of uplift may be a response to the rollback and associated retreating delamination of the Farallon oceanic slab.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late Cretaceous–early Eocene Laramide uplift, exhumation, and basin subsidence in Wyoming: Crustal responses to flat slab subduction

2014

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“…Moreover, although most researchers set the end of Southern Apennines thrusting around the beginning of the Middle Pleistocene (e.g. Butler et al, 2004;Patacca and Scandone, 2004), others contend that at that time thrusting did not cease and possibly shifted to the northeast, progressively involving the Adriatic "foreland" (Caputo and Bianca, 2005;Ferranti and Oldow, 2006;Caputo et al, 2007). Within this latter scenario, SW-NE extension could be explained as the result of a crustalscale extrados stretching, that is to say, as the surface evidence of a deep ramp anticline associated with a thrust detachment rooting within the crystalline part of the Adriatic crust.…”

Section: Geodynamic Perspectivementioning

confidence: 96%

Quantitative analysis of extensional joints in the southern Adriatic foreland (Italy), and the active tectonics of the Apulia region

Bucci

Caputo

Mastronuzzi

et al. 2011

Journal of Geodynamics

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“…Cinque et al 1993; Lavecchia et al 1994; Ferranti et al 1996; Monaco et al 1998). Today, extension is localized in the axial culmination of the chain, whereas thrusting is confined to its foreland margin (Lavecchia et al 1994; Montone et al 1997; Oldow et al 2002; Ferranti & Oldow 2005; Oldow & Ferranti 2005).…”

Section: Introductionmentioning

confidence: 99%

Active extension in Val d'Agri area, Southern Apennines, Italy: implications for the geometry of the seismogenic belt

Maschio¹,

Ferranti²,

Burrato³

2005

Geophysical Journal International

103

157

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S U M M A R YIntegration of geologic, geomorphologic and seismologic data sets is used to reconstruct the recent tectonic evolution and active deformation pattern in the Val d'Agri area, located in the seismically active axial sector of the Southern Apennines (Italy).The western portion of the Apennines thrust belt has been affected by Pliocene-Quaternary extension during easterly roll-back and crustal delamination of the Adriatic slab. The bulk of Quaternary extension has been accommodated by SW-dipping oblique and normal faults, which have attained mature morphologic and structural features and, nowadays, separate mountain ranges from intermontane basins.However, in the present seismogenic belt, coseismic faulting locally occurs on NE-dipping structures, which might cut the inherited Pleistocene landscape.In the Val d'Agri basin, in spite of the large Early-Middle Pleistocene, displacement occurred on SW-dipping faults bordering its eastern flank, our investigations show that the recent basin evolution has been controlled by a NE-dipping fault system (Monti della Maddalena fault system, MMFS). This fault system cuts across the Monti della Maddalena range, west of the Agri valley and has not yet created an evident tectonic landscape.Notwithstanding, fault motion since the Middle Pleistocene might explain geomorphologic and hydrographic anomalies of the Agri river and its valley, where fault-controlled subsidence has captured the river course and produced an aggrading plain within a regional uplift context. Recent and ongoing motion is documented by fault scarplets in loose deposits, 14 C ages of palaeosols and the spatial relation with low to moderate instrumental seismicity. Results from fault kinematic analysis are compatible with fault-plane solutions of local and regional seismic events, and indicate ∼NE-SW oriented extension.Recognition of the MMFS as a potential seismogenic fault increases the longitudinal extent of the NE-dipping, morphologically immature seismic sources in the Southern Apennines and argues against the range-bounding fault model for active extension in the region. The regional size of the NE-dipping seismogenic belt may result from impingement of a mantle wedge beneath the Apenninic chain and possibly track the external front of crustal delamination.

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Rates of Late Neogene Deformation Along the Southwestern Margin of Adria, Southern Apennines Orogen, Italy

Cited by 5 publications

References 41 publications

Late Cretaceous–early Eocene Laramide uplift, exhumation, and basin subsidence in Wyoming: Crustal responses to flat slab subduction

Late Cretaceous–early Eocene Laramide uplift, exhumation, and basin subsidence in Wyoming: Crustal responses to flat slab subduction

Quantitative analysis of extensional joints in the southern Adriatic foreland (Italy), and the active tectonics of the Apulia region

Active extension in Val d'Agri area, Southern Apennines, Italy: implications for the geometry of the seismogenic belt

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