INVESTIGADORES
ASTINI Ricardo Alfredo
artículos
Título:
Miocene forebulge development previous to broken foreland partitioning in the southern Central Andes, west-central Argentina.
Autor/es:
DÁVILA F.M.; ASTINI, R A.; JORDAN, T.E.; GEHRELS, G.E.; EZPELETA, M.
Revista:
TECTONICS
Editorial:
America Geophysical Union
Referencias:
Año: 2007 vol. 26 p. 1 - 29
ISSN:
0278-7407
Resumen:
In the distal region of the modern flat-slab
segment in the southern Central Andes, an unusual
stack of middle Miocene paleosols together with
regional upwarping and normal faulting indicate
episodic aggradation and condensed sedimentation
contemporaneous with the principal stage of foreland
basin development associated with foreland flexure
farther to the west. These features are consistent with
development of a forebulge zone during the early
stages of a proposed asymmetric foreland basin
system. Sedimentary thickness farther east and far from
the Cordilleran tectonic loads suggests accommodation
and preservation driven by nonisostatic dynamic
subsidence. Regional overlapping relationships and
basin modeling suggest that the Modern broken
foreland (present Sierras Pampeanas) can be interpreted
as a reactivation of a formerly partitioned broad
forebulge. Citation: Da´vila, F. M., R. A. Astini, T. E. Jordan,
G.Gehrels, andM.Ezpeleta (2007), Miocene forebulge development
previous to broken foreland partitioning in the southern Central
Andes, west-central Argentina, Tectonics, 26, TC5016, doi:10.1029/
2007TC002118.
2007TC002118.
G.Gehrels, andM.Ezpeleta (2007), Miocene forebulge development
previous to broken foreland partitioning in the southern Central
Andes, west-central Argentina, Tectonics, 26, TC5016, doi:10.1029/
2007TC002118.
2007TC002118.
Citation: Da´vila, F. M., R. A. Astini, T. E. Jordan,
G.Gehrels, andM.Ezpeleta (2007), Miocene forebulge development
previous to broken foreland partitioning in the southern Central
Andes, west-central Argentina, Tectonics, 26, TC5016, doi:10.1029/
2007TC002118.
2007TC002118.
Tectonics, 26, TC5016, doi:10.1029/
2007TC002118.