Steady-state exhumation pattern in the central Andes SE Peru

G.M.H. Ruiz, V. Carlotto, P.S. van Heiningen, P.A.M. Andriessen

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The Western Cordillera of SE Peru is part of the Central Andes and is situated to the west of the Eastern Andes from which it is separated by the northern termination of the Altiplano - the Inter-Andean Valley. It is a volcanic-volcano-detrital chain that developed in the Palaeogene, and is characterized by a 4000 m-high mean altitude whose origin is poorly constrained. We selected a vertical profile in the region of Abancay to trace the record the evolving uplift and erosion history of the Andean orogen. Fission-track data on both apatite and zircon crystals were completed on plutonic rocks of the Tertiary Andahuaylas-Yauri batholith. Ages ranged between 24 and 14 Ma, and 38 and 30 Ma, respectively. Thermal modelling was completed for the whole profile and does not, like age-altitude relationships, show evidence of any clear disruption of the exhumation paths since 38 Ma either by sedimentary burial and/or rapid exhumation. One of the noteworthy aspects of the data is that exhumation was steady at a rate of 0.17 km Ma
Original languageEnglish
Pages (from-to)307-316
JournalGeological Society Special Publication
Issue number324
DOIs
Publication statusPublished - 2009

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Zircon
Volcanoes
Apatite
exhumation
Erosion
Rocks
Crystals
plutonic rock
batholith
cordillera
Paleogene
vertical profile
apatite
zircon
volcano
uplift
crystal
erosion
valley
history

Cite this

Ruiz, G.M.H. ; Carlotto, V. ; van Heiningen, P.S. ; Andriessen, P.A.M. / Steady-state exhumation pattern in the central Andes SE Peru. In: Geological Society Special Publication. 2009 ; No. 324. pp. 307-316.
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abstract = "The Western Cordillera of SE Peru is part of the Central Andes and is situated to the west of the Eastern Andes from which it is separated by the northern termination of the Altiplano - the Inter-Andean Valley. It is a volcanic-volcano-detrital chain that developed in the Palaeogene, and is characterized by a 4000 m-high mean altitude whose origin is poorly constrained. We selected a vertical profile in the region of Abancay to trace the record the evolving uplift and erosion history of the Andean orogen. Fission-track data on both apatite and zircon crystals were completed on plutonic rocks of the Tertiary Andahuaylas-Yauri batholith. Ages ranged between 24 and 14 Ma, and 38 and 30 Ma, respectively. Thermal modelling was completed for the whole profile and does not, like age-altitude relationships, show evidence of any clear disruption of the exhumation paths since 38 Ma either by sedimentary burial and/or rapid exhumation. One of the noteworthy aspects of the data is that exhumation was steady at a rate of 0.17 km Ma",
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Steady-state exhumation pattern in the central Andes SE Peru. / Ruiz, G.M.H.; Carlotto, V.; van Heiningen, P.S.; Andriessen, P.A.M.

In: Geological Society Special Publication, No. 324, 2009, p. 307-316.

Research output: Contribution to JournalArticleAcademicpeer-review

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T1 - Steady-state exhumation pattern in the central Andes SE Peru

AU - Ruiz, G.M.H.

AU - Carlotto, V.

AU - van Heiningen, P.S.

AU - Andriessen, P.A.M.

PY - 2009

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AB - The Western Cordillera of SE Peru is part of the Central Andes and is situated to the west of the Eastern Andes from which it is separated by the northern termination of the Altiplano - the Inter-Andean Valley. It is a volcanic-volcano-detrital chain that developed in the Palaeogene, and is characterized by a 4000 m-high mean altitude whose origin is poorly constrained. We selected a vertical profile in the region of Abancay to trace the record the evolving uplift and erosion history of the Andean orogen. Fission-track data on both apatite and zircon crystals were completed on plutonic rocks of the Tertiary Andahuaylas-Yauri batholith. Ages ranged between 24 and 14 Ma, and 38 and 30 Ma, respectively. Thermal modelling was completed for the whole profile and does not, like age-altitude relationships, show evidence of any clear disruption of the exhumation paths since 38 Ma either by sedimentary burial and/or rapid exhumation. One of the noteworthy aspects of the data is that exhumation was steady at a rate of 0.17 km Ma

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