Cenozoic subsurface stratigraphy and structure of the Salar de Atacama Basin, northern Chile

Jordan, Teresa E.; Mpodozis, Constantino; Muñoz, Nelson Vergara; Blanco, Nicolás; Pananont, P.; Gardeweg, M.

doi:10.1016/j.jsames.2006.09.024

Cited by 90 publications

(122 citation statements)

References 33 publications

Supporting

Mentioning

117

Contrasting

Order By: Relevance

“…Additionally, we review and compare recent advances in the evolution of the Andes of northern Chile (e.g. Mpodozis et al, 2005, Jordan et al, 2007 …”

Section: Accepted Manuscriptmentioning

confidence: 99%

See 1 more Smart Citation

Synorogenic foreland rifts and transtensional basins: A review of Andean imprints on the evolution of the San Jorge Gulf, Salta Group and Taubaté Basins

Gianni

Navarrete

Folguera

2015

Journal of South American Earth Sciences

View full text Add to dashboard Cite

“…Additionally, we review and compare recent advances in the evolution of the Andes of northern Chile (e.g. Mpodozis et al, 2005, Jordan et al, 2007 …”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…In the Atacama Basin area, this mountain building stage is recorded as a strong angular unconformity between the Co. Tótola Fm. and the Paleocene Naranja Fm., and by coetaneous rapid cooling (65 to 50 Ma) of neighboring igneous bodies(Andrienssen and Reuter, 1994, Mpodozis et al, 2005, Jordan et al, 2007 (Fig. 10B).…”

mentioning

confidence: 98%

Synorogenic foreland rifts and transtensional basins: A review of Andean imprints on the evolution of the San Jorge Gulf, Salta Group and Taubaté Basins

Gianni

Navarrete

Folguera

2015

Journal of South American Earth Sciences

View full text Add to dashboard Cite

“…1a), which combining reflection seismic and outcrop data, show that it formed as a consequence of tectonic inversion of a Jurassic-Early Cretaceous back-arc basin within a continuous contractional regime in the Cordillera de Domeyko from mid-Cretaceous through Paleogene times (Muñoz et al, 2002;Mpodozis et al, 2005;Arriagada et al, 2006a;Jordan et al, 2007). It has been proposed that the main structural style of the Cordillera de Domeyko is strongly dependent on 'inherited structures', and that the shortening is due to reactivation of pre-existing extensional faults related to Triassic and Late Jurassic-Early Cretaceous rifts (Amilibia et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Although evidence of tectonic shortening and mountain building between the Late Cretaceous and the Tertiary seems reasonably well documented for the Andes of northern Chile (Moscoso and Mpodozis, 1988;Maksaev and Zentilli, 1999;Mpodozis et al, 2005;Arriagada et al, 2006a;Jordan et al, 2007;Amilibia et al, 2008), the complex interactions between extensional and compressional structures remain unresolved. Consequently, so far consistent evidence has not been shown to account for the structural style of the superposed Tertiary inversion.…”

Section: Introductionmentioning

confidence: 99%

The Lautaro Basin: A record of inversion tectonics in northern Chile

Martínez

Arriagada

Mpodozis

et al. 2012

andgeo

View full text Add to dashboard Cite

ABsTrACT. The Triassic and Jurassic tectonic history of northern Chile has been dominated by extension, although clear evidence about the nature and geometry of the extensional basins and subsequent inversion structures has been adequately illustrated in only a few cases. In this contribution we present a structural study of the Lautaro Basin located at the western edge of the Frontal Cordillera in the Atacama region of northern Chile. The Lautaro Basin is a Jurassic half-graben, filled by at least 2,600 m of marine deposits of the Lautaro Formation and developed on top of, at least 2,000 m of Triassic volcanic successions of the La Ternera Formation, also accumulated during an earlier period of extensional deformation. Detailed field mapping and construction of a regional balanced cross-section, supported by good exposures along the Copiapó River valley, allow reconstruction of the structural style of both the Jurassic and Triassic extensional depocenters. New structural data have shown that the Lautaro Basin has a complex structural framework reflected in two major Mesozoic extensional periods, overprinted by Cenozoic inversion involving thin-and thick-skinned tectonics. Shortening was accommodated by a combination of inversion of pre-existing normal faults, buttresses, development of footwall short-cuts, and both thin and thick-skinned thrusting. New estimates of shortening are up to 13.1 km (30%), while Mesozoic extension is estimated to be 3 km (7%). resuMen. La Cuenca Lautaro: un registro de inversión tectónica en el norte de Chile. Durante el Triásico y Jurá-sico la evolución tectónica del norte de Chile fue dominada por extensión cortical. No obstante, evidencias claras acerca del estilo estructural y subsecuente inversión de las cuencas asociadas con el evento extensional, han sido ilustradas en pocos casos. En este trabajo, se presenta un estudio estructural de la Cuenca Lautaro, localizada en el borde occidental de la Cordillera Frontal, en la región de Atacama del norte de Chile. La Cuenca Lautaro, es un hemigraben que aloja al menos 2.600 m de depósitos marinos de la Formación Lautaro, acumulados sobre al menos 2.000 m de sucesiones volcánicas triásicas de la Formación La Ternera. Los excelentes afloramientos de la región permitieron construir una sección balanceada y restaurar el estilo estructural de los depocentros extensionales triásicos y jurásicos. Los resultados obtenidos muestran que la Cuenca Lautaro tiene una arquitectura estructural compleja, reflejada en dos episodios extensionales mayores. Posteriormente, se sobreimpone al menos un evento de inversión tectónica que desarrolla una tectónica mixta de piel fina y piel gruesa. El acortamiento se acomoda por una combinación de inversión de fallas preexistentes, desarrollo de fallas de atajo y corrimientos de piel fina y piel gruesa, que involucran bloques rígidos o 'buttresses'. Las estimaciones de acortamiento son de 13,1 km (30%), mientras que la extensión mesozoica es de 3 km (7%).

show abstract

“…The stratigraphic record of foreland basins is generally very complete (Jordan 1995), and shortening, mountain building and the initiation of the Andean foreland basin started in Late Cretaceous-Paleocene times (Balkwill 1995;DeCelles & Horton 2003;Barragan et al 2005;Martin-Gombojav & Winkler 2008 and references therein). South of 22°S, although debated (see Jordan et al 2007 and references therein), the Andean foreland basin initiated in the CretaceousEarly Tertiary (Arriagada et al 2006) and migrated eastwards throughout the Paleogene (Carrapa & DeCelles 2008). In southern Bolivia, the Andean foreland basin defi nes a four-component foreland basin system (wedge-top, foredeep, forebulge and backbulge therefore they provide ample information on the geometry of thrust sheets, ages of movement on particular thrust sheets, rheology of the lithosphere, drainage history, denudation history, slab subduction rate and dip history, and climate history .…”

Section: Introductionmentioning

confidence: 99%

Cenozoic Sedimentary Evolution of the Amazonian Foreland Basin System

Roddaz

Hermoza

Mora

et al. 2009

Amazonia: Landscape and Species Evolution

View full text Add to dashboard Cite

In this chapter we present a synthesis of the Cenozoic evolution of the Amazonian foreland basin system, based on a review of the estimated ages, lithology and sedimentary structures, palaeontological content, and inferred depositional environments of sedimentary units in the basin. In addition, we have calculated maximum sedimentation rates for the Cenozoic formations of the northern Peruvian foreland basin and integrated these with existing data on sedimentation rates, subsidence analysis, migration of depocentre and depositional environments. Based on this information we propose a model for the Cenozoic evolution of the Amazonian foreland. The sedimentary architecture of this foreland basin indicates that Cenozoic evolution was marked by several periods, which were roughly synchronous and of similar effect, along the entire Amazonian foreland basin system. Tectonic loading of the Andes of Colombia, Ecuador, Peru and northern Bolivia, and development of the Amazonian foreland, was initiated during Late Cretaceous-Paleocene times and followed by an unloading stage during the Early-Middle Eocene period. The Middle-Late Eocene marine transgression and the increase in sedimentation rates, associated with westward migration of the depocentre, were all indicative of a renewed phase of tectonic loading of the Peruvian Western Cordillera and the Ecuadorian and Colombian Eastern Cordillera. Subsequent Oligo-Miocene increase in sedimentation rates and further migration of the depocentres towards the present-day sub-Andean zone, are all indicative for a thrust-induced uplift and loading of the Eastern Cordilleras of Peru, Bolivia and Colombia. This Oligo-Miocene loading stage maintained high subsidence rates that favoured the sedimentation of aggradational fl oodplain and coastal plain and tidally infl uenced deposits. Nevertheless, the processes that controlled the Early-Middle Miocene marine ingressions remain to be determined. Late Miocene ongoing thrust tectonic loading of the Eastern Cordillera, initial structuring of the sub-Andean zone and the onset of the main phase of Andean surface uplift induced fl exural subsidence in the foredeep depozones of the entire Amazonian foreland basin. This process also drove the Late Miocene marine transgressions that characterized the fi lled stage of the Ecuadorian, Peruvian and Bolivian Amazonian foreland basin system. Valley incisions and full relief development in the hinterland during the Late Miocene-Pliocene provided increased sediment supply and overfi lled the Amazonian foreland basin system. Finally, the fl at-slab subduction of the Nazca ridge induced Pliocene (~4 Ma) uplift of the Fitzcarrald Arch and subdivided the Amazonian foreland basin into the northern and southern Amazonian foreland basins.

show abstract

Cenozoic subsurface stratigraphy and structure of the Salar de Atacama Basin, northern Chile

Cited by 90 publications

References 33 publications

Synorogenic foreland rifts and transtensional basins: A review of Andean imprints on the evolution of the San Jorge Gulf, Salta Group and Taubaté Basins

Synorogenic foreland rifts and transtensional basins: A review of Andean imprints on the evolution of the San Jorge Gulf, Salta Group and Taubaté Basins

The Lautaro Basin: A record of inversion tectonics in northern Chile

Cenozoic Sedimentary Evolution of the Amazonian Foreland Basin System

Contact Info

Product

Resources

About