Thrusting evolution in the southern Cordillera Oriental (northern Argentine Andes): Constraints from growth strata

Carrera, Núria; Muñoz, J. A.

doi:10.1016/j.tecto.2007.11.068

Cited by 75 publications

(105 citation statements)

References 24 publications

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“…2). Evidence of growth strata at this locality has been described in detail by Carrera and Muñoz (2008). The foreland basin system migrated eastward from what is today the Puna Plateau interior at ca.…”

Section: Geological Settingmentioning

confidence: 69%

“…1C, 2, and 3). Following rifting, Cenozoic shortening related to the retro-arc fold-and-thrust belt development was responsible for reactivation of rift-related structures (Carrera et al, 2006;Carrera and Muñoz, 2008). The contact between rift-related strata and foreland basin strata is conformable in places ( Fig.…”

Section: Geological Settingmentioning

confidence: 99%

“…Eastward propagation of the deformation through the region in the late Cenozoic was responsible for disruption of the regional foreland basin system. Cretaceous extension associated with the Salta Rift (Salfi ty and Marquillas, 1994) has affected Cenozoic deformation, resulting in strong variability in the orientation of contractional structures (Carrera et al, 2006;Carrera and Muñoz, 2008). A regional foreland basin was pervasive throughout the study area from the Paleogene to the early Miocene, and it appears that the deepest depocenters during Cretaceous rifting (i.e., hanging-wall basins) (Carrera et al, 2006) were later deeply incised in the late Miocene-Pliocene during propagation of deformation through the region (Carrapa et al, 2011b) (Figs.…”

Section: Introductionmentioning

confidence: 99%

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The effect of inherited paleotopography on exhumation of the Central Andes of NW Argentina

Carrapa

Reyes-Bywater

Safipour

et al. 2013

Geological Society of America Bulletin

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Differential exhumation in the Puna Plateau and Eastern Cordillera of NW Argentina is controlled by inherited paleostructures and resulting paleotopography related to the Cretaceous Salta Rift paleomargins. TheCeno zoic deformation front related to the development of the Andean retro-arc orogenic system is generally associated with >4 km of exhumation, which is recorded by Cenozoic apatite fi ssion-track (AFT) and (U-Th-[Sm])/ He ages (He ages) in the Eastern Cordillera of NW Argentina. New AFT ages from the top of the Nevado de Cachi document Oligocene (ca. 28 Ma) cooling, which, combined with existing data, indicates exhumation of this range between ca. 28 Ma and ca. 14 Ma. However, some of the highest ranges in the Eastern Cordillera preserve Cretaceous ages indicative of limited Cenozoic exhumation. Samples collected from an ~3-km-elevation transect along the northern part of the Sierra de Quilmes paleorift fl ank (Laguna Brava) show AFT ages between ca. 80 and ca. 50 Ma and He ages between ca. 45 and ca. 10 Ma. Another set of samples from an ~1-km-elevation transect farther to the southwest (La Quebrada) shows Cretaceous AFT ages between ca. 116 Ma and ca. 76 Ma, and mainly Cretaceous He ages, in agreement with AFT data. Analysis of existing AFT and He ages from the area once occupied by the Salta Rift reveals a pattern characterized by Cretaceous ages along paleorift highs and Cenozoic ages within paleorift hanging-wall basins and later foreland basin depocenters. This pattern is interrupted by the Sierras Pampeanas at ~28°S, which record mid-Cenozoic ages. Our data are consistent with a complex inherited pattern of pre-Andean paleostructures, likely associated with paleotopography, which was beveled by the Cenozoic regional foreland basin and reactivated during the late Neogene (ca. <10 Ma), strongly controlling the magnitude of Cenozoic uplift and exhumation and thus cooling age distribution. This, combined with variable lithologic erodibility, resulted in an irregular distribution of themochronological ages.

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Section: Geological Settingmentioning

confidence: 69%

Section: Geological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effect of inherited paleotopography on exhumation of the Central Andes of NW Argentina

Carrapa

Reyes-Bywater

Safipour

et al. 2013

Geological Society of America Bulletin

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“…The Andean foreland history is better known from the Miocene to present day than before this time interval (Jordan and Alonso, 1987;Kley, 1998;Galli and Hernández, 1999;Reynolds et al, 2000;Echavarría et al, 2003;Coutand et al, 2006;Carrera and Muñoz, 2008) than the previous history. A complex Eocene foreland basin has recently been proposed (Hongn et al, 2007;Carrapa and DeCelles, 2008) as alternative to a rather simple Paleogene foreland basin previously postulated (Boll and Hernández, 1986;Jordan and Alonso, 1987;Vergani and Starck, 1989;Starck and Vergani, 1996).…”

Section: Introductionmentioning

confidence: 99%

Sedimentological, geochemical and paleontological insights applied to continental omission surfaces: A new approach for reconstructing an eocene foreland basin in NW Argentina

Papa

Kirschbaum

Powell

et al. 2010

Journal of South American Earth Sciences

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“…This basin is bounded to the west by the Precambrian-early Cambrian metasedimentary Puncoviscana Formation over the Cenozoic basin strata. To the east, the Cretaceous rocks of the Sierra de Los Colorados over the basin strata (e.g., Carrera and Muñoz, 2008).…”

Section: Geographic and Geologic Settingmentioning

confidence: 99%

Un nuevo Notungulado Hipsodonte (Hegetotheriidae, Pachyrukhinae) del Mioceno tardío de la Cordillera Oriental, provincia de Salta, Noroeste de Argentina.

Reguero

Candela

Galli

et al. 2015

Andgeo

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ABSTRACT. Late Miocene fluvial strata of the Palo Pintado Formation are broadly exposed to the northwest of the town of Angastaco, Salta province, Northwest of Argentina. These strata accumulated in the extensional Angastaco Basin. Recent field work at the Palo Pintado Formation (late Miocene), Valle Calchaquí, Salta province, Argentina has provided fossil remains that greatly increased the knowledge of the faunal assemblage of this site. A number of notoungulates and rodents were collected. A partial left jaw was collected at Quebrada Peñas Blancas along the west bank of the Río Calchaquí. Morphological and morphometric comparisons permit referral of this specimen to a new species of hegetotheriid notoungulate Paedotherium kakai sp. nov. It represents the first report of Paedotherium for the Eastern Cordillera and one of the few well-documented occurrences of this genus outside of middle-high latitudes Argentina. The widespread geographic range of Paedotherium, combined with its restricted temporal range, suggest it may be one of the most useful biostratigraphic indicator taxa for Neogene faunas. Paedotherium kakai would have been a mixed feeder that lived in gallery forests, feeding close to water bodies of a system river and lagoons, in food plains developed under humid and subtropical climate.

show abstract

Thrusting evolution in the southern Cordillera Oriental (northern Argentine Andes): Constraints from growth strata

Cited by 75 publications

References 24 publications

The effect of inherited paleotopography on exhumation of the Central Andes of NW Argentina

The effect of inherited paleotopography on exhumation of the Central Andes of NW Argentina

Sedimentological, geochemical and paleontological insights applied to continental omission surfaces: A new approach for reconstructing an eocene foreland basin in NW Argentina

Un nuevo Notungulado Hipsodonte (Hegetotheriidae, Pachyrukhinae) del Mioceno tardío de la Cordillera Oriental, provincia de Salta, Noroeste de Argentina.

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