Volcano-tectonics under intra-arc transpression
Final Report Abstract
Field-based, remote sensing and experimental work complemented by a reassessment of published thermochronological and GPS data highlight the success of the bilateral DFG-MINCYT/CONICET project. Notably, transpression affected the entire width of the Southern Andes and was accomplished by distributed deformation. The location of Copahue volcanoe appears to be genetically unrelated to crustal faults but may have formed as a consequence of local dilation due to perturbation of principal stresses. Contrary to previous studies, Caviahue caldera unlikely originated as a tectonic pull-apart basin, and NW-striking faults may well have formed early in Andean orogenesis. The project sets the stage for a larger collaborative research effort geared towards understanding the role of crustal flow perturbations in volcano-tectonically active areas.
Publications
- 2021. Editorial - From Proterozoic tectonics to Quaternary climate variability: Earth system science studies in Latin America. International Journal of Earth Sciences 110, 2269–2271
Riller, U., Giambiagi, L., Strecker, M.R.
(See online at https://doi.org/10.1007/s00531-021-02095-9) - 2021. Kinematic partitioning in the Southern Andes (39° S–46° S) inferred from lineament analysis and reassessment of exhumation rates. International Journal of Earth Science 110, 2385–2398
Göllner, P.L., Eisermann, J.O., Balbis, C., Petrinovic, I.A., Riller, U.
(See online at https://doi.org/10.1007/s00531-021-02068-y) - 2021. Orogen-scale transpression accounts for GPS velocities and kinematic partitioning in the Southern Andes. Communications Earth & Environment 2, 167
Eisermann, J.O., Göllner, P.L., Riller, U.
(See online at https://doi.org/10.1038/s43247-021-00241-4) - 2021. Unraveling the timing of the Caviahue depression, Andean Southern Volcanic Zone: insights from the sedimentary infill. International Journal of Earth Sciences 110, 2541–2558
Hernando, I.R., Bucher, J., del Papa, C.E., Eisermann, J.O., Göllner, P.L., Guzmán, S.R., Balbis, C., Petrinovic, I.A.
(See online at https://doi.org/10.1007/s00531-020-01936-3)
