Subduction and deformation of the continental lithosphere in response to plate and crust-mantle coupling

Willingshofer, Ernst; Sokoutis, Dimitrios; Beekman, F.; Cloetingh, S.A.P.L.

doi:10.1130/g34815.1

Cited by 51 publications

(58 citation statements)

References 26 publications

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“…Intra-plate orogens are found at great distances from active plate boundaries. Their initiation is controlled by the presence of lateral strength variation in the continental lithosphere (Aitken et al, 2013;Raimondo et al, 2014;Ziegler et al, 1998).…”

Section: Intra-plate Continental Deformationmentioning

confidence: 99%

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Asymmetric vs. symmetric deep lithospheric architecture of intra-plate continental orogens

Calignano

Sokoutis

Willingshofer

et al. 2015

Earth and Planetary Science Letters

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Section: Intra-plate Continental Deformationmentioning

confidence: 99%

“…The initiation and subsequent evolution of such mountain belts strongly depend on 1) lateral strength contrasts in the lithosphere allowing for localization of deformation (Vauchez et al, 1998;Ziegler et al, 1998), and 2) the rheological structure of the lithosphere, which governs its overall geometry (Burov, 2011).…”

Section: Introductionmentioning

confidence: 99%

Asymmetric vs. symmetric deep lithospheric architecture of intra-plate continental orogens

Calignano

Sokoutis

Willingshofer

et al. 2015

Earth and Planetary Science Letters

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“…• Data Set S1 current stage. Meanwhile, it has been demonstrated in modeling studies (both numerical and analogue; e.g., Beaumont & Quinlan, 1994;Butler et al, 2013;Ellis & Beaumont, 2000;Pysklywec, 2001;Willingshofer et al, 2013) that continental subduction leads to formation of a somewhat symmetrical fault system, which includes both prowedge and retrowedge in the crust on the opposite sides of the orogenic belt. This system also includes proforeland and retroforeland basins (e.g., Hoth et al, 2008).…”

Section: 1029/2018gl078074mentioning

confidence: 99%

Diverse Continental Subduction Scenarios Along the Arabia‐Eurasia Collision Zone

Kaban

Petrunin

Khrepy

et al. 2018

Geophysical Research Letters

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It is generally accepted that convergence of the Arabian and African plates is a subduction‐dominated process. However, the subduction scenarios are still debatable. Here we present a 3‐D model of the mantle to a depth of 700 km, based on a joint interpretation of the seismic tomography, residual topography, residual mantle gravity field, and seismicity. At the northwestern edge of the collision zone, we only observe partial underthrust of the Eurasian plate under the West Greater Caucasus. We suggest that this is the initial stage of subduction polarity reversal after the break off of the plate formerly subducted northward. To the southeast, counteracting subduction zones are found beneath northwest Zagros in the south and beneath the East Greater Caucasus and Alborz in the north. This scenario is likely the result of highly buoyant and weak blocks of the Lesser Caucasus, Alborz, and northwest Zagros, which are underlain in the south by the Arabian plate and the Scythian plate and South Caspian from the opposite side. Further to the southeast, a delaminated lithospheric slab is observed under southeast Zagros, while the Arabian and Eurasian plates only partially underthrust East Zagros and Kopet Dagh, respectively. In the southern part of the collision zone under Makran, only remnants of the formerly subducted slabs are found below 200 km.

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“…Analogue and numerical models of orogen evolution generally predict rapid onset of retrowedge deformation following initial continent‐continent collision [e.g., Beaumont et al ., , ; Ellis and Beaumont , ; Ellis et al ., ; Faccenda et al ., ; Jamieson and Beaumont , ; Vanderhaeghe , ; Vanderhaeghe and Duchene , ; Willingshofer and Sokoutis , ; Willingshofer et al ., ] but also suggest that singly vergent orogens may exist during early stages of collision, sometimes also referred to as “soft collision” [e.g., Beaumont et al ., ; Jamieson and Beaumont , ; Royden , ; Royden and Burchfiel , ; Waschbusch and Beaumont , ]. Here we consider the early stage of collision, i.e., “soft collision,” the period of time between initial development of a singly vergent wedge and a doubly vergent wedge.…”

Section: Implications For Development Of Doubly Vergent Orogensmentioning

confidence: 99%

Transition from a singly vergent to doubly vergent wedge in a young orogen: The Greater Caucasus

2014

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The Greater Caucasus Mountains, due to their youth (~5 Ma), provide an opportunity for insight into the early stages of orogen development during continent-continent collision. However, their recent tectonic evolution and first-order architecture remain unclear. Here we investigate the evolution of the orogen by integrating new observations of the fluvial geomorphology and neotectonics of the range with prior work on seismicity, geodetic strain, bedrock geology, and foreland basin structure. We find that the range contains four zones along strike that differ in structural architecture, topography, and first-order tectonic history. In particular, two south directed, singly vergent zones at the western and eastern tips of the orogen are separated by both a central doubly vergent zone that is dominated by north directed deformation and an eastern doubly vergent zone in which south directed thrusting dominates. We hypothesize that the along-strike changes in vergence and locus of deformation reflects different stages in the development of a doubly vergent orogen, with the tips of the range preserving an early, singly vergent form and the center recording a more advanced orogen. The differences between the two doubly vergent zones seem to be driven by the initial stages of collision between the structurally thickened crust of the Greater and Lesser Caucasus orogens, which initiated at~5 Ma.

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Subduction and deformation of the continental lithosphere in response to plate and crust-mantle coupling

Cited by 51 publications

References 26 publications

Asymmetric vs. symmetric deep lithospheric architecture of intra-plate continental orogens

Asymmetric vs. symmetric deep lithospheric architecture of intra-plate continental orogens

Diverse Continental Subduction Scenarios Along the Arabia‐Eurasia Collision Zone

Transition from a singly vergent to doubly vergent wedge in a young orogen: The Greater Caucasus

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