Middle Eocene deformation and sedimentation in the Puna-Eastern Cordillera transition (23°-26°S): Control by preexisting heterogeneities on the pattern of initial Andean shortening

Hongn, Fernando; Papa, Cecilia del; Powell, Jaime Eduardo; Petrinovic, Iván Alejandro; Mon, Ricardo; Deraco, Virginia

doi:10.1130/g23189a.1

Cited by 134 publications

(218 citation statements)

References 9 publications

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“…The generation of hinterland basins began with mid-Cenozoic fragmentation of the former foreland basin, the result of cratonward (eastward) advance of the thrust belt (Schwab, 1985;Boll and Hern andez, 1986;Coutand et al, 2001;Hongn et al, 2007;. This led to topographic isolation and initiation of internal drainage that persists today as sedimentation continues in various isolated basins, commonly in evaporative saline lakes or salars (Alonso et al, 1991;Vandervoort et al, 1995).…”

Section: Cretaceous Stratamentioning

confidence: 99%

Cenozoic Evolution of Hinterland Basins in the Andes and Tibet

Horton

2011

Tectonics of Sedimentary Basins

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Sedimentary basins have been generated in hinterland regions of the Andean and Himalayan-Tibetan orogens during Cenozoic plate convergence. These hinterland basins record nonmarine sediment accumulation (commonly in high-elevation, lowrelief, internally drained, arid/semiarid settings) during protracted deformation and surface uplift of continental crust. In South America, Andean hinterland basins are produced between the western magmatic arc and craton-directed fold-thrust belt to the east. In the India-Asia collision zone, hinterland basins develop as elements of the growing Tibetan plateau between the Himalayan thrust belt and Asian plate interior to the north. Hinterland sedimentary basins in the Andes and Tibet are distinguished from foreland basins adjacent to their respective fold-thrust belts by structural position, elevation, and stratigraphic evolution. Sediment accommodation in these hinterland basins is created by flexure, fault-induced subsidence, and topographic ponding, with common examples of remnant foreland basins succeeded by younger hinterland basins.

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Section: Cretaceous Stratamentioning

confidence: 99%

Cenozoic Evolution of Hinterland Basins in the Andes and Tibet

Horton

2011

Tectonics of Sedimentary Basins

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“…Thick-skinned structures were produced by the reactivation of deep crustal discontinuities (Mon & Hongn 1991), basement anisotropies and faults formed during Precambrian to Palaeozoic orogenies (Mon & Hongn 1991;Cristallini et al 2004;Quenardelle & Ramos 1999). The tectonic inversion of former extensional faults played a key role in the configuration of the Santa Bárbara System, at the NE of the study area (Grier et al 1991;Coutand et al 2001;Kley et al 2005;Carrera et al 2006;Hongn et al 2007). The Eastern Cordillera involves the inversion of Cretaceous syn-rift faults, but also basement faults that were not active during the rifting stage (Bianucci et al 1981;Grier et al 1991;Cristallini et al 1997;Kley & Monaldi 2002).…”

Section: Geological Settingmentioning

confidence: 99%

“…Eocene (Coutand et al 2001;Carrapa et al 2005;Carrera et al 2006;Hongn et al 2007). Since then, deformation has propagated towards the east but with jumps back to the west intercalated in an out-of-sequence deformation (Carrera et al 2006;Carrera & Muñoz 2008;Hain et al 2011).…”

Section: Geological Settingmentioning

confidence: 99%

Basin fragmentation controlled by tectonic inversion and basement uplift in Sierras Pampeanas and Santa Bárbara System, northwest Argentina

Iaffa

Sàbat

Muñoz

et al. 2013

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The study area is located within the Central Andes, a complex region composed of different structural styles. The region is characterized by highly elevated basement cored ranges, which abruptly break the foreland plain. These ranges were uplifted mainly by deep detached high-angle faults or by the inversion of former extensional faults of the Cretaceous rift. Palaeozoic orogenies generated crustal scale discontinuities in the basement, some of them reactivated during the Andean orogeny. Sedimentary sequences and layers architecture in the basins bordering ranges recorded the tectonic evolution of the region. Basement, syn–rift, post-rift and three foreland stages were interpreted in the seismic sections according to the arrangement of the horizons and the main outcropping geological units in bordering ranges. Based on seismic data sets and field data, here we document a particular style of activation of basement faults. Thick-skinned structures that are not always related to the tectonic inversion but to the reactivation of older basement anisotropies represent a paradox since they were not active during the rifting stage. A flat slab subduction and a subsequent angle recovery conditioned the structural evolution of the area.

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“…During the Eocene shortening propagated to the Eastern Cordillera (Oncken et al, 2006;Hongn et al, 2007). The following stage, occurring between 29 and 20 Ma, affected the whole Altiplano, the entire Eastern Cordillera, and expanded shortening southwards into the Puna domain (Oncken et al, 2006;and references therein).…”

Section: Geologic Settingmentioning

confidence: 99%

“…Recently, the quantity, quality, and geographic distribution of paleomagnetic data have expanded greatly (Richards et al, 2004;Prezzi et al, 2004;Arriagada et al, 2006;Roperch et al, 2006;Taylor et al, 2007;Barke and Lamb, 2007;Arriagada et al, 2008b;Maffione et al, 2009). The increased paleomagnetic data set has been accompanied by an increase in the current knowledge of the deformation periods in the Andes (e.g., Oncken et al, 2006;Ege et al, 2007;Hongn et al, 2007;Barnes and Ehlers, 2009), allowing a more detailed analysis of the temporal and spatial distribution of the detected rotations. Considering all what has previously been mentioned, the major goal of our work is to further investigate the possible existence of different rotational domains with distinct characteristics, and their correlations with the deformation pattern and morphotectonic units identified in the Central Andes.…”

Section: Introductionmentioning

confidence: 99%

The Southern Central Andes vertical axis tectonic rotations: relations with the deformation pattern

Prezzi

Llanos

2012

andgeo

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ABSTRACT. Along the Central Andes a pattern of vertical axis tectonic rotations has been paleomagnetically identified. Such rotations are counterclockwise north of Arica Deflection (~19°S) and clockwise to the south. Different hypothesis and models have been proposed to explain the Central Andean Rotation Pattern (CARP). However, the CARP is a subject of ongoing debate. Recently, the quantity, quality, and geographic distribution of paleomagnetic data have expanded greatly. Such expansion has been accompanied by an increase in the knowledge of the deformation periods in the Andes, allowing a more detailed analysis of the temporal and spatial distribution of the detected rotations. We compiled and analyzed the available Cenozoic paleomagnetic data for the region extending between 19° and 27.5°S. The results suggest the possible existence of different rotational domains with distinct characteristics. We propose that in the Southern Central Andes, a close correlation would exist between the style and the temporal and spatial pattern of deformation and the amount of recorded vertical axis rotations. However, in order to further investigate such relationship, new paleomagnetic studies are necessary, particularly in the Eastern Cordillera domain, in Paleogene rocks cropping out in the Altiplano-Puna and in Neogene rocks of the forearc.

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Middle Eocene deformation and sedimentation in the Puna-Eastern Cordillera transition (23°-26°S): Control by preexisting heterogeneities on the pattern of initial Andean shortening

Cited by 134 publications

References 9 publications

Cenozoic Evolution of Hinterland Basins in the Andes and Tibet

Cenozoic Evolution of Hinterland Basins in the Andes and Tibet

Basin fragmentation controlled by tectonic inversion and basement uplift in Sierras Pampeanas and Santa Bárbara System, northwest Argentina

The Southern Central Andes vertical axis tectonic rotations: relations with the deformation pattern

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