1995
DOI: 10.1080/00206819509465439
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An Integrated Tectono-Magmatic Model for the Evolution of the Southern Peruvian Andes (13-20°S) since 55 Ma

Abstract: The definition and characterization of the Oligocene-Miocene Crucero Supergroup of the southern Peru Inner Arc domain provide a previously unavailable lithostratigraphic framework for the clarification of the geodynamic context of magmatism across the southern Peruvian transect. We integrate new lithostratigraphic, petrologic, and 40 Ar/ 39 Ar geochronologic data for these volcanic and hypabyssal rocks with published information to establish a geotectonic model for the transect since 55 Ma.The early Eocene to … Show more

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Cited by 81 publications
(57 citation statements)
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References 78 publications
(240 reference statements)
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“…31-26 Ma) all along the Peruvian margin has been proposed by Séb-rier and Soler (1991). Magmatism in this period was restricted but has been reported from southern Peru (Sandeman et al, 1995;Clark et al, 1990), although it appears to have been most important in the southern Peruvian Cordillera Oriental and Altiplano (Sébrier and Soler, 1991;Sandeman et al, 1995) as well as the Precordillera of northern Chile (Trumbull et al, 2006). These relationships suggest a regional geodynamic control on the reduction of magma output.…”
Section: Oligocene Magmatic Activitymentioning
confidence: 79%
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“…31-26 Ma) all along the Peruvian margin has been proposed by Séb-rier and Soler (1991). Magmatism in this period was restricted but has been reported from southern Peru (Sandeman et al, 1995;Clark et al, 1990), although it appears to have been most important in the southern Peruvian Cordillera Oriental and Altiplano (Sébrier and Soler, 1991;Sandeman et al, 1995) as well as the Precordillera of northern Chile (Trumbull et al, 2006). These relationships suggest a regional geodynamic control on the reduction of magma output.…”
Section: Oligocene Magmatic Activitymentioning
confidence: 79%
“…The Oligocene and Miocene phases of uplift and contractile deformation in the Central Andes have been summarized by numerous authors (Tosdal et al, 1984;Sébrier and Soler, 1991;Sandeman et al, 1995;Benavides, 1999;Oncken et al, 2006). Within the study area, important mid-Miocene deformation has been constrained to between $14.5 and 5.2 Ma by Farrar and Noble (1976) for areas south of Cerro de Pasco.…”
Section: Geologic Evolution Of Central Perúmentioning
confidence: 99%
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“…9), although its genesis has been a matter of discussion (e.g. Sillitoe, 1981;Kay & Kay, 1993;Sandeman et al, 1995).…”
Section: History Of Magmatism: Magmatic Flare-upmentioning
confidence: 99%