Results 61 to 70 of about 5,277 (203)

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

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

Effective elastic thickness in the Central Andes. Correlation to orogenic deformation styles and lower crust high-gravity anomaly [PDF]

, 2018
Global studies have assessed the importance of elastic thickness (Te) on orogenic evolution, showing that the style and nature of upper crustal shortening are influenced by the inherited lithospheric strength. Thus, pioneer works have identified that the
Garcia, Hector Pedro Antonio, Gianni, Guido Martin, Lince Klinger, Federico Gustavo, Lupari, Marianela Nadia, Ruiz, Francisco, Sanchez, Marcos Ariel, Soler, Santiago Rubén   +6 more
core   +2 more sources

Sedimentation tempo in an Early Jurassic erg system: Refined chronostratigraphy and provenance of the Clarens Formation of southern Africa

Basin Research, Volume 36, Issue 3, May–June 2024.
Maximum depositional ages of the Early Jurassic Clarens Formation of southern Africa. Abstract The Clarens Formation is a widespread aeolianite deposited over southern Gondwana and represents the final phase of erg evolution in the main Karoo Basin during the Early Jurassic.
Howard V. Head, Emese M. Bordy, Robert Bolhar   +2 more
wiley   +1 more source

Crustal structure and tectonic setting of the south central Andes from gravimetric analysis [PDF]

, 2013
En el presente trabajo, a partir de datos gravimétricos terrestres, se preparó una carta de anomalías de Bouguer, la cual fue adecuadamente filtrada a fin de separar efectos gravimétricos someros y profundos.
Alvarez Pontoriero, Orlando, Gimenez, Mario Ernesto, Lince Klinger, Federico Gustavo, Martinez, Myriam Patricia, Sanchez, Marcos Ariel, Spagnotto, Silvana Liz, Weidmann, María Cecilia   +6 more
core   +2 more sources

Implications of Flat‐Slab Subduction on Hydration, Slab Seismicity, and Arc Volcanism in the Pampean Region of Chile and Argentina

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 3, March 2024.
Abstract The Pampean flat slab in central Chile and Argentina is characterized by the inland migration and subsequent cessation of arc volcanism since the mid‐Miocene. Slab flattening also affects the distribution and number of intermediate‐depth earthquakes and the evolution of the overlying continental thermal structure.
Xiaowen Liu, Lara S. Wagner, Claire A. Currie, Mark J. Caddick   +3 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

Caracterización petrológica y geoquímica de las rocas plutónicas de la Sierra de La Aguada, Provincia de San Luis, Argentina: Implicaciones genéticas con el arco magmático Famatiniano

Estudios Geologicos, 2017
El presente trabajo expone una síntesis de la geología que comprende al complejo cristalino que constituye la Sierra de La Aguada, provincia de San Luis, Argentina, desde un enfoque basado en las relaciones de campo, los rasgos petrológico-estructurales ...
E. Cristofolini, M. Barzola, J. Otamendi, A. Tibaldi, A. Morosini, P. Armas, G. Camilletti   +6 more
doaj   +1 more source

Crustal shortening at the Sierra Pie de Palo (Sierras Pampeanas, Argentina): near-surface basement folding and thrusting [PDF]

Geological Magazine, 2016
AbstractThe Sierras Pampeanas consist of basement uplifts that are mainly controlled by W-verging crustal thrusts. One of these, the Sierra Pie de Palo, is controlled by a blind thrust whose kinematics is debated. We analysed the reverse faults located along the eastern side of the range and show that these are characterized by small displacements (few
Bellahsen, Nicolas, Sébrier, Michel, Siame, Lionel   +2 more
openaire   +2 more sources

Late Holocene Dust Deposition Fluxes Over the Entire South Atlantic Ocean

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 1, January 2024.
Abstract Mineral dust accumulated on the ocean floor is an important archive for reconstructing past atmospheric circulation changes and climatological conditions in the source areas. Dust emitted from Southern Hemisphere dust sources is widely deposited over the oceans. However, there are few records of dust deposition over the open ocean, and a large
Michèlle van der Does, Frank Lamy, Stephan Krätschmer, Jan‐Berend W. Stuut, Christoph Völker, Martin Werner, Roseanne Schwarz, Marty Fleisher, Gisela Winckler   +8 more
wiley   +1 more source