Orogens and slabs vs. their direction of subduction

Doglioni, Carlo; Harabaglia, Paolo; Merlini, Saverio; Mongelli, Francesco Paolo; Peccerillo, Angelo; Piromallo, Claudia

doi:10.1016/s0012-8252(98)00045-2

Cited by 303 publications

(225 citation statements)

References 177 publications

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“…There are several factors that affect the geological processes and the final products along a continental margin. Nevertheless, there is some consensus that the main parameters that control the geometry, coupling and tectonic setting of Andean-type subduction zone are: length of the Benioff zone, relative convergence rate, age of the downgoing slab, slab dip, direction of mantle flow, absolute motion of the over-riding plate and slab retreat, among others (Jarrard 1986;Daly 1989;Doglioni et al 1999Doglioni et al , 2007Doglioni et al , 2009; Oncken et al 2006). All these first-order oceanic parameters should be combined with second order features.…”

Section: Subduction Parameters In the Andesmentioning

confidence: 99%

“…Since the early proposal of Forsyth and Uyeda (1975) that have shown that the slab pull forces are positively correlated with the donwndip length of a subduction zone, there were many studies of the processes controlling the tectonic regime. The complete analysis of Jarrard (1986), and the most modern studies of specific cases of Doglioni et al (1999Doglioni et al ( , 2007Doglioni et al ( , 2009), Heuret and Lallemand (2005), Cruciani et al (2005), Lallemand et al (2005), Schellart (2008) and Guillaume et al (2009) have shown that a large variety of structural environments and plate interactions at convergent margins may be illustrated by the two end members, the Marianas and the Peru-Chile plate boundaries. Marianas is characterized by an old oceanic crust that is underthrusting a tensional overriding plate at an almost vertical dip, accompanied by relatively modest maximum earthquakes.…”

Section: Introductionmentioning

confidence: 99%

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The tectonic regime along the Andes: Present‐day and Mesozoic regimes

Ramos¹

2009

Geological Journal

230

139

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The analyses of the main parameters controlling the present Chile-type and Marianas-type tectonic settings developed along the eastern Pacific region show four different tectonic regimes: (1) a nearly neutral regime in the Oregon subduction zone; (2) major extensional regimes as the Nicaragua subduction zone developed in continental crust; (3) a Marianas setting in the Sandwich subduction zone with ocean floored back-arc basin with a unique west-dipping subduction zone and (4) the classic and dominant Chile-type under compression. The magmatic, structural and sedimentary behaviours of these four settings are discussed to understand the past tectonic regimes in the Mesozoic Andes based on their present geological and tectonic characteristics. The evaluation of the different parameters that governed the past and present tectonic regimes indicates that absolute motion of the upper plate relative to the hotspot frame and the consequent trench roll-back velocity are the first order parameters that control the deformation. Locally, the influences of the trench fill, linked to the dominant climate in the forearc, and the age of the subducted oceanic crust, have secondary roles. Ridge collisions of seismic and seismic oceanic ridges as well as fracture zone collisions have also a local outcome, and may produce an increase in coupling that reinforces compressional deformation. Local strain variations in the past and present Andes are not related with changes in the relative convergence rate, which is less important than the absolute motion relative to the Pacific hotspot frame, or changes in the thermal state of the upper plate. Changes in the slab dip, mainly those linked to steepening subduction zones, produce significant variations in the thermal state, that are important to generate extreme deformation in the foreland.

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Section: Subduction Parameters In the Andesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The tectonic regime along the Andes: Present‐day and Mesozoic regimes

Ramos¹

2009

Geological Journal

230

139

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“…Other possible causes of the tectonic forces responsible for these compressions are the slab-pull processes which led to roll-back processes of the plate along the subduction zone of the Carpathians (Royden, 1993). The asthenospheric flow directed towards East determined the rotation of the subduction zone, together with a translation movement of the lithospheric plates (Doglioni et al, 1999). The movement of these plates towards East has been influenced by the existence of the oceanic subduction in the External Carpathians during the Early Miocene through the consumption of the basin with oceanic crust in front of the European Plate, approximately 500 km wide (Csontos, 1995), under the Tisia-Dacia microplates.…”

Section: The Regional Tectonic Evolution and The Geodynamic Settingmentioning

confidence: 99%

Tectonic and Structural Relationships in Silvania Mountains

Irimuș¹,

Bogdan²

2017

Studia UBB Geographia

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ABSTRACT. -Tectonic and Structural Relationships in Silvania Mountains.The structural landforms were defined by the fault systems present in the area, as dislocations following the Alpine orogenic system, which imposed the subaerial and submerged dynamics of the landforms, coordinating in this way the modeling systems with the geological time scale, on the basis of complex tectonic and structural, morphotectonic and morphoselection relationships between the geologic structure, the tectonic factors and the external geodynamic agents. The Meseș hemi-anticline is different from the horst of Plopiş as well as Șimleu and Coșeiu Hillocks due to the dynamics, intensity and magnitude of the faulting phenomenon which controlled the sedimentation process and the placement of eruptive bodies. The morphoselection relationships, in which the main role belonged to the selective erosion, facilitated the development of three types of structural (tabular, monoclinal and folded) landforms.

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“…Another interesting point concerns the balance between the along-dip length of the STBP (maximum length of 500 km) and the amount of shortening of the Apennine fold-and-thrust belt system. The volume of the entire Apennine crust in Calabria is smaller than the volume of the upper crust that would be involved in the formation of an accretionary prism, assuming that the upper crust had been scraped off during subduction (Doglioni et al, 1999). In general, the compressional structures of both the central and the southern Apennines do not show the thin-skinned geometries typical of subduction-related complexes, but rather they are characterized by a thick-skinned style, typical of ensialic deformations, with basement largely involved in the deformation and with only limited amounts of horizontal shortening (van Dijk et al, 2000;Barchi et al, 2001;Noguera and Rea, 2000;Lavecchia et al, 2003).…”

Section: The Southern Tyrrhenian Benioff Planementioning

confidence: 99%