Buscar
Mostrando ítems 1-10 de 406
Constraints on the Neogene growth of the central Patagonian Andes at the latitude of the Chile triple junction (45–47°S) using U/Pb geochronology in synorogenic strata
(Elsevier Science, 2018-10)
Desertification of Central Patagonia began between ~14–12 Ma and therefore was not directly connected to the opening of the Drake Passage and initial conformation of the Antarctica ice cap in early Miocene times. Local ...
Cenozoic intraplate tectonics in Central Patagonia: Record of main Andean phases in a weak upper plate
(Elsevier Science, 2017-11)
Contraction in intraplate areas is still poorly understood relative to similar deformation at plate margins. In order to contribute to its comprehension, we study the Patagonian broken foreland (PBF) in South America whose ...
Backlimb trishear: A kinematic model for curved folds developed over angular fault bends
(Pergamon-Elsevier Science Ltd, 2002-12)
Numerous analog models and some natural examples display smoothly curving backlimb fold hinges over sharp, angular bends in the underlying thrust surface. We present a new kinematic model that can reproduce this geometry ...
Mass and nutritional quality of upper and lower strata of tropical forages
(2016-01-01)
The goal of this work was to evaluate the growth dynamics and chemical characteristics of the upper and lower strata of summer perennial grasses under a four cuts system. The experiment was conducted in a randomized block ...
Constraints on the Neogene growth of the Central Patagonian Andes at the latitude of the Chile triple junction (45-47°S) using U/Pb geochronology in synorogenic strata
(2018)
Desertification of Central Patagonia began between similar to 14-12 Ma and therefore was not directly connected to the opening of the Drake Passage and initial conformation of the Antarctica ice cap in early Miocene times. ...
The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)
(Pergamon-Elsevier Science Ltd, 2015-12)
Miocene sedimentary successions of the Ñirihuau and Collón Cura formations east of the El Maitén Belt constitute a partial record of the Andean exhumation, defining a synorogenic infill of the Ñirihuau Basin in the foothills ...
Tectonic evolution of the North Patagonian Andes (41°-44° S) through recognition of syntectonic strata
(Elsevier Science, 2016-05)
The North Patagonian fold-thrust belt (41°–44° S) is characterized by a low topography, reduced crustal thickness and a broad lateral development determined by a broken foreland system in the retroarc zone. This particular ...
Patagonian broken foreland and related synorogenic rifting: The origin of the Chubut Group Basin
(Elsevier Science, 2015-05)
The Central Patagonia is characterized by prominent continental deposits that belong to the Cretaceous Chubut Group Basin, whose tectonic setting remains controversial. It has been interpreted as a foreland basin, an ...
Influência da zonação sobre a estrutura populacional e biologia reprodutiva de UCA Leptodactylus (Crustacea : Decapoda : Ocypodidae) em estuários do Estado de Sergipe
(Universidade Federal de SergipePós-Graduação em Ecologia e ConservaçãoBRUFS, 2017)
Comparative structural analysis of inverted structures in the San Bernardo fold belt (Golfo San Jorge basin, Argentina): Inversion controls and tecto-sedimentary context of the Chubut Group
(Pergamon-Elsevier Science Ltd, 2020-01)
The Golfo San Jorge Basin is one of the most important hydrocarbon-bearing basins of Argentina. Its position in the distal Patagonian Broken Foreland confers a particular structural architecture. Specifically, the western ...