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Cited by 1,113Geological and Tectonic Studies in Latin AmericaGeological and Geophysical StudiesGeological and Geophysical Studies Worldwide

Uplift of the Central Andean Plateau and bending of the Bolivian Orocline

Isacks, Bryan L.·1988·Journal of Geophysical Research: Solid Earth
DOI 10.1029/jb093ib04p03211
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Abstract

The topography of the central Andes can be considered the primary tectonic “signal” of late Cenozoic mountain building in an arid region where the effects of uplift and magmatism are little obscured by denudation. The spatial coverage of the topographic signal is more complete than that for sparsely sampled geological and geophysical data. A color‐coded image of digitized topography between 12°S and 37°S highlights the Altiplano‐Puna, one of the world's most remarkable plateaus, and reveals important physiographic clues about the formation of that major feature. The topographic data combined with information on structure, magmatism, seismicity, and paleomagnetism support a simple kinematical model for the late Cenozoic evolution of the central Andes. The model does not require collisional effects or enormous volumes of intrusive additions to the crust but instead calls upon plausible amounts of crustal shortening and lithospheric thinning. The model interrelates Andean uplift, a changing geometry of the subducted Nazca plate, and a changing outline (in map view) of the leading edge of the South American plate. Crustal shortening has accommodated convergence between the Chilean‐Peruvian forearc and the South American foreland. The Altiplano‐Puna plateau can be constructed by a combination of crustal shortening and thickening and lithospheric thinning above a shallow dipping (20°–30°) subducted plate. The seawardly concave bend of western South America, the “Bolivian orocline,”…

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Crossref · 10.1029/jb093ib04p03211

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  • Post-Oligocene (<26 Ma) crustal shortening is probably the dominant process for thickening central Andes crust.

    “Post-Oligocene (<26 Ma) crustal shortening is probably the dominant process for thickening central Andes crust [Isacks, 1988;Sempere et al., 1990].”

    From Constraints on present‐day shortening rate across the central eastern Andes from GPS data (1997) · cites this paper as Isacks, 1988

  • The locus of shortening has migrated east with time, from the Altiplano in the Miocene to its present position in the Sub-Andean zone.

    “The locus of shortening has migrated east with time, from the Altiplano in the Miocene to its present position in the Sub-Andean zone [e.g., Suarez et al., 1983;Isacks, 1988].”

    From Constraints on present‐day shortening rate across the central eastern Andes from GPS data (1997) · cites this paper as Isacks, 1988

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Authors
Isacks, B. L.
Corresponding author
Isacks, Bryan L.
Venue
Journal of Geophysical Research: Solid Earth
Publisher
American Geophysical Union (AGU)
Published
1988-04-10
Volume
93
Issue
B4
Pages
3211-3231
ISSN
0148-0227 (ISSN-L)
DOI
10.1029/jb093ib04p03211
OpenAlex
W2154603570
Cited by
1,113
References
105
Citations by year
2026: 16 · 2025: 21 · 2024: 20 · 2023: 33 · 2022: 43 · 2021: 43 · 2020: 40 · 2019: 35 · 2018: 31 · 2017: 38 · 2016: 40 · 2015: 42 · 2014: 42 · 2013: 37 · 2012: 29
FWCI
13.59
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor, 8929 d)
Locations
Journal of Geophysical Research Atmospheres (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Tectonic Studies in Latin America
  • Physical Sciences › Earth and Planetary Sciences › Geology › Geological and Geophysical Studies
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geophysical Studies Worldwide
Keywords
Andean uplift, Bolivian orocline, Altiplano-Puna plateau, Central Andes, crustal shortening, lithospheric thinning, foreland basin, foreland fold-thrust belt, Sierras Pampeanas, plate motion, topographic analysis

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