Tectonic Evolution of the Northern Patagonian Andes (40°S)

Tectonic evolution of the North Patagonian Andes (41°–44° S) through recognition of syntectonic strata

Tectonophysics ◽

10.1016/j.tecto.2016.04.009 ◽

2016 ◽

Vol 677-678 ◽

pp. 99-114 ◽

Cited By ~ 57

Author(s):

A. Echaurren ◽

A. Folguera ◽

G. Gianni ◽

D. Orts ◽

A. Tassara ◽

...

Keyword(s):

Tectonic Evolution ◽

The North ◽

Patagonian Andes

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Tectonic evolution of the northern Austral-Magallanes basin in the Southern Patagonian Andes from provenance analysis

Journal of South American Earth Sciences ◽

10.1016/j.jsames.2019.102234 ◽

2019 ◽

Vol 95 ◽

pp. 102234 ◽

Cited By ~ 1

Author(s):

Vanesa Barberón ◽

Gonzalo Ronda ◽

Inés Aramendía ◽

Rodrigo J. Suárez ◽

Miguel E. Ramos ◽

...

Keyword(s):

Tectonic Evolution ◽

Provenance Analysis ◽

Magallanes Basin ◽

Patagonian Andes

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Neogene to Quaternary tectonic evolution of the Patagonian Andes at the latitude of the Chile Triple Junction

Tectonophysics ◽

10.1016/j.tecto.2004.04.023 ◽

2004 ◽

Vol 385 (1-4) ◽

pp. 211-241 ◽

Cited By ~ 76

Author(s):

Yves Lagabrielle ◽

Manuel Suárez ◽

Eduardo A Rossello ◽

Gérard Hérail ◽

Joseph Martinod ◽

...

Keyword(s):

Triple Junction ◽

Tectonic Evolution ◽

Patagonian Andes ◽

Chile Triple Junction

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Tectonic evolution of the North Patagonian Andes from field and gravity data (39–40°S)

Journal of South American Earth Sciences ◽

10.1016/j.jsames.2013.12.010 ◽

2014 ◽

Vol 51 ◽

pp. 59-75 ◽

Cited By ~ 27

Author(s):

Miguel Esteban Ramos ◽

Andrés Folguera ◽

Lucas Fennell ◽

Mario Giménez ◽

Vanesa D. Litvak ◽

...

Keyword(s):

Tectonic Evolution ◽

Gravity Data ◽

The North ◽

Patagonian Andes

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Late Cenozoic geomorphic and tectonic evolution of the Patagonian Andes between latitudes 42°S and 46°S: An appraisal based on fission-track results from the transpressional intra-arc Liquiñe-Ofqui fault zone

Geological Society of America Bulletin ◽

10.1130/0016-7606(2002)114<1159:lcgate>2.0.co;2 ◽

2002 ◽

Vol 114 (9) ◽

pp. 1159-1173 ◽

Cited By ~ 53

Author(s):

Stuart N. Thomson

Keyword(s):

Heat Flow ◽

Fault Zone ◽

Tectonic Evolution ◽

Fission Track ◽

Strike Slip ◽

Late Cenozoic ◽

History Of ◽

Patagonian Andes ◽

Digital Landscape ◽

Fast Rates

Abstract Fission-track (FT) thermochronology has been applied to investigate the low-temperature cooling and denudation history of the Patagonian Andes along the southern part of the intra-arc transpressional Liquiñe-Ofqui fault zone between 42° and 46°S. The Liquiñe-Ofqui fault is shown to have been the focus of enhanced cooling and denudation initiated between ca. 16 and 10 Ma. Several fault blocks with different cooling histories are identified; these are separated by major oblique- or reverse-slip faults proposed to form the eastern part of a major (crustal-scale) dextral transpression zone. Local very fast rates of cooling and denudation between ca. 7 and 2 Ma were coeval with collision of the Chile Rise (an active mid-oceanic ridge) with the Peru-Chile Trench between ∼47° and 48°S. This location is close to the southern termination of the Liquiñe-Ofqui fault, implying that the collision of the ridge was a major force driving late Cenozoic transpression. The lack of significant cooling and denudation before ca. 16 Ma is indicative of pure strike-slip or transtensional movement along the Liquiñe-Ofqui fault before the collision of the ridge. Digital landscape analysis supports glacial and periglacial erosion as the main contributor to denudation since ca. 7 Ma, leading to restriction of topographic development. The combination of transpression-induced rock uplift and glacial erosion is shown to be very effective at causing localized denudation. Anomalously young FT ages along the Liquiñe-Ofqui fault are attributed to the existence of a late Cenozoic localized heat-flow anomaly along the fault.

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