Results 51 to 60 of about 1,303 (189)

A 300 kyr record of past hydroclimate change from alluvial fans in the southern Central Andes

Earth Surface Processes and Landforms, Volume 50, Issue 1, January 2025.
We dated alluvial‐fan deposits at the Sierra de Aconquija in northwestern Argentina. The alluvial fans aggraded and incised in phase with known hydroclimate changes throughout the last ~300 kyr. Abstract Alluvial fans are hypothesised to record signals of past hydroclimate changes in their depositional chronologies and slopes.
Mitch K. D'Arcy, Taylor F. Schildgen, Stéphane Bonnet, Walter Duesing, Stefanie Tofelde, Duna C. Roda‐Boluda, Hella Wittmann, Jürgen Mey, Andrew S. Murray, Ricardo N. Alonso, Manfred R. Strecker   +10 more
wiley   +1 more source

Historical biogeography of Asteraceae from Tandilia and Ventania mountain ranges (Buenos Aires, Argentina)

Caldasia, 2001
Las sierras septentrionales, o de Tandilia y las australes, o de Ventania, caracterizadas por su gran diversidad orgánica y su alto número de endemismos, están ubicadas en la planicie bonaerense de pastizales denominada "pampa".
Crisci V. Jorge, Freire E. Susana, Sancho Gisela, Katinas Liliana   +3 more
doaj  

Creep on the Argentine Precordillera Décollement Following the 2015 Illapel, Chile, Earthquake: Implications for Andean Seismotectonics

Geophysical Research Letters, Volume 51, Issue 19, 16 October 2024.
Abstract The Central and South‐Central Andes form a “two‐sided” mountain belt bounded by distinct zones of convergence in the forearc and backarc flanks. Previous geodetic interseismic deformation studies found that the forearc to backarc velocity field is better explained when elastic models allow reverse aseismic slip on the Andes eastern‐flank ...
M. A. Figueroa, F. S. Sobrero, D. D. Gómez, R. Smalley Jr., M. G. Bevis, W. A. Griffith, D. J. Caccamise II, E. C. Kendrick   +7 more
wiley   +1 more source

Estratigrafía de las áreas cumbrales de las Sierras Pampeanas de Córdoba: geocronología, modelo regional, paleoambiente y paleoclima en una región poco conocida de Argentina

Revista Mexicana de Ciencias Geológicas, 2018
El sistema de Sierras Pampeanas Orientales se extiende en un am- plio sector del centro-oeste de la Argentina conformando el antepaís andino central y posee superficies de aplanamiento de origen erosivo en las áreas cumbrales, denominadas “pampas de ...
Jerónimo Matías Krapovickas, Adan Alejo Tauber   +1 more
doaj   +1 more source

Structural Inheritance in the Eastern Cordillera, NW Argentina: Low‐Temperature Thermochronology of the Cianzo Basin

Tectonics, Volume 43, Issue 6, June 2024.
Abstract The present‐day deformation style of the Eastern Cordillera in NW Argentina is strongly influenced by the inversion of pre‐existing Paleozoic and Mesozoic structures. In particular, the extensional faults and lithological contrasts resulting from the Cretaceous–Paleogene Salta Rift phase form heterogeneities that were preferentially ...
Willemijn S. M. T. van Kooten, Michele Vallati, Edward R. Sobel, Cecilia E. del Papa, Patricio Payrola, Daniel Starck, Alejandro Bande, Maria F. Wayar Córdoba, Ayelén T. Lapiana, Johannes Glodny   +9 more
wiley   +1 more source

Entre montes, arroyos y cerros: una aproximación comparativa a la diversidad morfológica, técnica y espacial de los grabados rupestres del sur de Santiago del Estero, Argentina

Arqueologia
En este trabajo se analizan comparativamente seis sitios con grabados rupestres ubicados en las sierras de Ambargasta y Ramírez de Velasco, al sur de Santiago del Estero.
Natalia Carden, Catriel Leon
doaj   +1 more source

Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)

Tectonics, Volume 43, Issue 6, June 2024.
Abstract Compared to the thin‐skinned Subandean foreland fold‐and‐thrust belt of northern Argentina and Bolivia, the tectonically active morphotectonic province of the Santa Bárbara System in the Andean broken foreland of northwestern Argentina is characterized by a temporally and spatially disparate deformation style. Although there is no well‐defined
Ahmad Arnous, Victor H. García, Heiko Pingel, Laura Giambiagi, Manfred R. Strecker   +4 more
wiley   +1 more source

Construcciones temporales en la arqueología del sector serrano de la provincia de Córdoba (Argentina): una revisión de usos en los últimos 140 años de investigaciones arqueológicas

Arqueologia
La arqueología de la provincia de Córdoba, especialmente del sector meridional de las Sierras Pampeanas Australes, ha sido foco de investigaciones arqueológicas durante al menos los últimos 140 años.
Humberto Aguilar, Camila Brizuela, Julian Mignino, M. Paula Weihmüller   +3 more
doaj   +1 more source

Late Paleozoic deformation and exhumation in the Sierras Pampeanas (Argentina): 40Ar/39Ar-feldspar dating constraints [PDF]

, 2016
Systematic 40Ar/39Ar feldspar data obtained from the Sierras Pampeanas are presented, filling the gap between available high- (>~300 °C) and low-temperature (
Siegesmund, Siegfried, Layer, Paul, Löbens, Stefan, Benowitz, Jeff, Wemmer, Klaus, Oriolo, Sebastián   +5 more
core   +1 more source

Orogenic magmatism along the transition Precordillera-Sierras Pampeanas, between 29° and 31° S, Argentina

, 2023
New geochemical data and petrological analysis of Neogene volcanic units from the Pampean Flat Slab Segment (29°-31°SL) are presented in this contribution.
Litvak, Vanesa Dafne, Poma, Stella Maris, Rubinstein, Nora Alicia, Quenardelle, Sonia Monica, Maisonnave, Emma Beatriz, Ramos, Adriana Maria   +5 more
core   +1 more source