Along-strike segmentation of the Andean foreland: causes and consequences

Kley, Jonas; Monaldi, Cesar Ruben; Salfity, José A.

doi:10.1016/s0040-1951(98)90223-2

Cited by 312 publications

(314 citation statements)

References 50 publications

Supporting

Mentioning

265

Contrasting

Unclassified

Order By: Relevance

“…This is in agreement with the dominant vergence of Andean structures and the well-established eastward propagation of deformation [James, 1971;Allmendinger et al, 1983Allmendinger et al, , 1990Jordan et al, 1983Jordan et al, , 1993Ramos 1988Ramos , 2009Mpodozis and Ramos, 1989;Kley et al, 1999;Cristallini and Ramos, 2000;Giambiagi et al, 2001Giambiagi et al, , 2003Coutand et al, 2001;ANCORP Working Group, 2003;Ramos et al, 2004;Kay et al, 2005;Oncken et al, 2006].…”

Section: Chilean Central Depression: a Foreland Basin?supporting

confidence: 83%

Comment on “The West Andean Thrust, the San Ramón Fault, and the seismic hazard for Santiago, Chile” by Rolando Armijo et al.

Astini

Dávila

2010

Tectonics

View full text Add to dashboard Cite

Section: Chilean Central Depression: a Foreland Basin?supporting

confidence: 83%

Comment on “The West Andean Thrust, the San Ramón Fault, and the seismic hazard for Santiago, Chile” by Rolando Armijo et al.

Astini

Dávila

2010

Tectonics

View full text Add to dashboard Cite

“…On the top of that, weakness zones in the continental crust, such as old sutures among different Palaeozoic or Mesozoic terranes (McCrory 1996;Doglioni et al 2007;Ramos 2008), or extensional faults of an earlier tectonic stage (Kley et al 1999;Ramos 1999) will also exert an important control in the structural style and in localizing Andean deformation.…”

Section: Subduction Parameters In the Andesmentioning

confidence: 99%

“…The structure varies from dominant thin-skinned to thickskinned tectonics depending on the fragmented nature of the upper crust, where previous normal faults created weakness zones in the basement (Ramos et al 1996;Kley et al 1999;Cristallini and Ramos 2000). In extreme cases, as in the Pampean flat-slab segment (Figure 10), deformation produced basement uplift in the foreland as seen in the Sierras Pampeanas .…”

Section: Chile-type Subductionmentioning

confidence: 99%

“…The inception of contraction and development of a fold and thrust belt episodically began in the Late Cretaceous. The structural style was controlled by a series of local factors such as previous weakness zones in the crust (Kley et al 1999) and thermal regime with varying heat fluxes related to shifts in the magmatic arc position . Alternation of thin-and thick-skinned sectors is common, as well as propagation of the deformation to the foreland, where in extreme cases is broken by basement uplifts (Jordan et al 1983a).…”

Section: Beginning Of Chile-type Subductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Ramos¹

2009

Geological Journal

228

139

View full text Add to dashboard Cite

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.

show abstract

“…Cordillera and the Sub Andean belt, (e.g., Kley et al, 1999, Hogn et al, 2007 as the Altiplano becomes narrower and 258 higher giving way to the Puna region of NW Argentina (see Allmendinger et al, 1997).…”

mentioning

confidence: 99%

Continental margin deformation along the Andean subduction zone: Thermo-mechanical models

Gerbault

Cembrano

Mpodozis

et al. 2009

Physics of the Earth and Planetary Interiors

View full text Add to dashboard Cite

Please cite this article as: Gerbault, M., Mpodozis, J., Farias, C., Pardo M, M., Continental Margin Deformation along the Andean Subduction zone: Thermomechanical Models, Physics of the Earth and Planetary Interiors (2008), doi:10.1016/j.pepi.2009 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

show abstract

Along-strike segmentation of the Andean foreland: causes and consequences

Cited by 312 publications

References 50 publications

Comment on “The West Andean Thrust, the San Ramón Fault, and the seismic hazard for Santiago, Chile” by Rolando Armijo et al.

Comment on “The West Andean Thrust, the San Ramón Fault, and the seismic hazard for Santiago, Chile” by Rolando Armijo et al.

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

Continental margin deformation along the Andean subduction zone: Thermo-mechanical models

Contact Info

Product

Resources

About