Topography growth drives stress rotations in the central Andes: Observations and models

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Topography growth drives stress rotations in the central Andes: Observations and models. / Heidbach, Oliver; Iaffaldano, Giampiero; Bunge, Hans-Peter.

In: Geophysical Research Letters (Online), Vol. 35, No. 8, 16.04.2008.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Heidbach, O, Iaffaldano, G & Bunge, H-P 2008, 'Topography growth drives stress rotations in the central Andes: Observations and models', Geophysical Research Letters (Online), vol. 35, no. 8. https://doi.org/10.1029/2007GL032782

APA

Heidbach, O., Iaffaldano, G., & Bunge, H-P. (2008). Topography growth drives stress rotations in the central Andes: Observations and models. Geophysical Research Letters (Online), 35(8). https://doi.org/10.1029/2007GL032782

Vancouver

Heidbach O, Iaffaldano G, Bunge H-P. Topography growth drives stress rotations in the central Andes: Observations and models. Geophysical Research Letters (Online). 2008 Apr 16;35(8). https://doi.org/10.1029/2007GL032782

Author

Heidbach, Oliver ; Iaffaldano, Giampiero ; Bunge, Hans-Peter. / Topography growth drives stress rotations in the central Andes: Observations and models. In: Geophysical Research Letters (Online). 2008 ; Vol. 35, No. 8.

Bibtex

@article{9bdd3538a38042938a93227fe73f4d67,
title = "Topography growth drives stress rotations in the central Andes: Observations and models",
abstract = "Recent numerical models that couple global mantel circulation with lithosphere dynamics show that growth of the central Andes controls the 30% reduction of convergence velocity between the Nazca and South America plates observed over the past 10 Ma. The increase of gravitational potential energy due to topographic growth is also a major control on the stress pattern. Here we use numerical models which reproduce the Nazca/South America convergence history to predict the change of stress pattern in the central Andes for the past 10 Ma. Comparison of the modeled stress orientations at present-day with the observed ones results in ±23.9° mean deviation. Based on this good agreement we attempt to predict paleostress orientations 10 Ma ago. Interestingly, the modeled stress orientations 3.2 Ma ago are very similar to the present-day orientations. From this result we infer that stress rotations occurred between 10 and 3.2 Ma ago, when topography was considerably lower.",
author = "Oliver Heidbach and Giampiero Iaffaldano and Hans-Peter Bunge",
year = "2008",
month = apr,
day = "16",
doi = "10.1029/2007GL032782",
language = "English",
volume = "35",
journal = "Geophysical Research Letters (Online)",
issn = "1944-8007",
publisher = "Wiley-Blackwell",
number = "8",

}

RIS

TY - JOUR

T1 - Topography growth drives stress rotations in the central Andes: Observations and models

AU - Heidbach, Oliver

AU - Iaffaldano, Giampiero

AU - Bunge, Hans-Peter

PY - 2008/4/16

Y1 - 2008/4/16

N2 - Recent numerical models that couple global mantel circulation with lithosphere dynamics show that growth of the central Andes controls the 30% reduction of convergence velocity between the Nazca and South America plates observed over the past 10 Ma. The increase of gravitational potential energy due to topographic growth is also a major control on the stress pattern. Here we use numerical models which reproduce the Nazca/South America convergence history to predict the change of stress pattern in the central Andes for the past 10 Ma. Comparison of the modeled stress orientations at present-day with the observed ones results in ±23.9° mean deviation. Based on this good agreement we attempt to predict paleostress orientations 10 Ma ago. Interestingly, the modeled stress orientations 3.2 Ma ago are very similar to the present-day orientations. From this result we infer that stress rotations occurred between 10 and 3.2 Ma ago, when topography was considerably lower.

AB - Recent numerical models that couple global mantel circulation with lithosphere dynamics show that growth of the central Andes controls the 30% reduction of convergence velocity between the Nazca and South America plates observed over the past 10 Ma. The increase of gravitational potential energy due to topographic growth is also a major control on the stress pattern. Here we use numerical models which reproduce the Nazca/South America convergence history to predict the change of stress pattern in the central Andes for the past 10 Ma. Comparison of the modeled stress orientations at present-day with the observed ones results in ±23.9° mean deviation. Based on this good agreement we attempt to predict paleostress orientations 10 Ma ago. Interestingly, the modeled stress orientations 3.2 Ma ago are very similar to the present-day orientations. From this result we infer that stress rotations occurred between 10 and 3.2 Ma ago, when topography was considerably lower.

U2 - 10.1029/2007GL032782

DO - 10.1029/2007GL032782

M3 - Journal article

VL - 35

JO - Geophysical Research Letters (Online)

JF - Geophysical Research Letters (Online)

SN - 1944-8007

IS - 8

ER -

ID: 138731152