Paleogeographic and tectonic controls on the evolution of Cenozoic basins in the Altiplano and Western Cordillera of southern Peru

Carlotto, Vı́ctor

doi:10.1016/j.tecto.2013.01.002

Cited by 43 publications

(62 citation statements)

References 30 publications

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“…In 2000, CRUST 2.0 updated the ice and sediment thickness information of CRUST 5.1 at 1 Â 1 resolution while basically redistributing the crustal thickness data onto a 2 Â 2 grid ( Figure 23). In addition, several high-resolution regional compilations of depth-to-Moho values have been developed for Europe (Dèzes and Ziegler, 2001;Geiss, 1987;Meissner et al, 1987;Ritzmann et al, 2002;Tesauro et al, 2008), the Middle East, and North Africa (Seber et al, 2001), and new models have been presented for South America (Chulick et al, 2013;Lloyd et al, 2010) and Asia (Stolk et al, 2013).…”

Section: Global Crustal Modelsmentioning

confidence: 99%

Crust and Lithospheric Structure - Global Crustal Structure

Mooney

2015

Treatise on Geophysics

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Section: Global Crustal Modelsmentioning

confidence: 99%

Crust and Lithospheric Structure - Global Crustal Structure

Mooney

2015

Treatise on Geophysics

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“…Los anfiteatros o zonas de arranque identificados en la zona de estudio (figura 4) se encuentran abiertos en dirección al norte y pueden ser el reflejo del movimiento sinextral inverso del sistema de fallas Cusco-Lagunillas con dirección NW-SE (Carlotto, 2013), localizado al sur de los anfiteatros, así como los hummocks, que presentan una orientación con el mismo sentido hacia el norte, debido a que inestabilizan las rocas que conforman el Complejo Sillapaca. Así también, constituyen zonas de debilidad que pueden funcionar como zonas de arranque de grandes masas colapsadas.…”

Section: (Figura 4)unclassified

“…Los anfiteatros o zonas de arranque se encuentran abiertos en dirección al norte y pueden ser el reflejo del movimiento sinextral inverso del sistema de fallas NW-SE (Carlotto, 2013), así como los hummocks que presentan una orientación en el mismo sentido.…”

Section: Discusión: Origen De Las Avalanchas De Escombrosunclassified

Avalanchas de escombros en el complejo volcánico Sillapaca: una herramienta para la gestión sostenible del territorio

Calderón¹,

Avalos²,

Nuñez³

et al. 2017

EYD

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“…PC = Precordillera; SAZ = Subandean zone. (c) Regional geologic map of southern Peru showing Cenozoic stratigraphic formations and Paleozoic‐Cenozoic intrusive units (modified from Carlotto, ) overlain upon a hillshade DEM generated from Shuttle Radar Topography Mission 90 m data.…”

Section: Introductionmentioning

confidence: 99%

“…Critical to addressing such questions are records of basin subsidence, surface uplift, and crustal deformation at different locations along orogenic strike. However, such records in the northern part of the Andean plateau in southern Peru have largely been obscured by volcanic rocks from periods of intense magmatism (e.g., Demouy et al, ; Mamani et al, , ), or complicated by deformational overprinting during periods of oblique convergence (Carlotto, ) and contractional reactivation preexisting structures (e.g., Perez, Horton, & Carlotto, ). Cenozoic strata in the Peruvian Altiplano provide a valuable, yet relatively unexplored record of tectonic processes active during the Cenozoic construction of the Andean plateau.…”

Section: Introductionmentioning

confidence: 99%

Peruvian Altiplano Stratigraphy Highlights Along‐Strike Variability in Foreland Basin Evolution of the Cenozoic Central Andes

et al. 2018

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Retroarc foreland basins in the Andean plateau contain critical information on geodynamic processes driving plateau development by providing a record of exhumation and sediment sourcing, as well as the timing, location, and magnitude of basin subsidence. However, this record is incomplete along orogenic strike and particularly limited in southern Peru. We measured~6,200 m of nonmarine clastic strata in the northern Peruvian Altiplano, documented through lithofacies characterization and paleocurrent analysis, conglomerate clast counts, sandstone petrography, and detrital zircon U-Pb geochronology; for the latter we employ quantitative detrital zircon interpretation methods including multidimensional scaling, mixture modeling, and quantification of zircon roundness. Results show dominant sediment sourcing from the Western Cordillera and/or western Altiplano. Sediment accumulation rates define an upward-convex Paleogene subsidence profile consistent with deposition in a northeastward-migrating flexural foreland basin system, with lithospheric loading from an increasingly proximal Western Cordilleran hinterland. Basin deposition following a 23-9 Ma angular unconformity shows a marked increase in sediment accumulation rates >800 m/Myr, interpreted as a departure from flexural subsidence. Results highlight along-strike variability in Andean foreland basin evolution, as foredeep deposits are thicker, and the onset of rapid sediment accumulation occurs earlier in southern Peru compared to Bolivia and Argentina. Results tentatively support models of orogenic cyclicity and reveal that episodes of high-flux magmatism in southern Peru are slightly out of phase with those documented in northwest Argentina, which may be controlled by preexisting Paleozoic-Mesozoic structural and stratigraphic fabrics and the rate of underthrusting of melt-fertile continental lower crust and mantle lithosphere.

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Paleogeographic and tectonic controls on the evolution of Cenozoic basins in the Altiplano and Western Cordillera of southern Peru

Cited by 43 publications

References 30 publications

Crust and Lithospheric Structure - Global Crustal Structure

Crust and Lithospheric Structure - Global Crustal Structure

Avalanchas de escombros en el complejo volcánico Sillapaca: una herramienta para la gestión sostenible del territorio

Peruvian Altiplano Stratigraphy Highlights Along‐Strike Variability in Foreland Basin Evolution of the Cenozoic Central Andes

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