Results 21 to 30 of about 317 (175)

The mafic-ultramafic belt of the Argentine Precordillera: A geological synthesis

Journal of South American Earth Sciences, 2021
Abstract In central-western Argentina, a mafic-ultramafic belt occurs throughout the western margin of the Precordillera. This belt is interpreted as the suture zone between the Cuyania terrane and the Chilenia terrane, both accreted onto the Gondwana margin during the Early Paleozoic.
Boedo, Florencia Lucila, Perez Lujan, Sofia Beatriz, Ariza, Juan Pablo, Vujovich, Graciela Irene   +3 more
openaire   +2 more sources

Preserved Through Hyperaridity, 150 Million Years of Exhumation and Strike‐Slip Deformation in the Atacama Coastal Cordillera

Tectonics, Volume 45, Issue 9, September 2026.
Abstract The Coastal Cordillera of northern Chile, in the forearc of the Andean subduction zone, provides an ideal site to evaluate exhumation above the oldest active subduction under extreme aridity. This range lies parallel to a sediment‐starved trench, has experienced hyperaridity since the Miocene, and is transected by the ∼1,000‐km‐long Atacama ...
T. F. Aránguiz‐Rago, A. R. Duvall, K. W. Huntington   +2 more
wiley   +1 more source

A Transient Coastal Uplift Event Revealed by Pleistocene Marine Terraces Along the 2015 M8.3 Illapel Earthquake Rupture, Chile

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Uplifted Pleistocene marine terraces in the Illapel area along the forearc of central Chile record spatially and temporally variable uplift rates on glacial‐cycle timescales. However, the underlying mechanisms for this uplift variability and its potential relationship with the megathrust‐earthquake cycle remain poorly understood.
Roland Freisleben, Julius Jara‐Muñoz, Daniel Melnick, Dominik Brill, Simone Racano, Christian Creixell Torres, Ismael Murillo Rogers, Marcelo M. Rivadeneira, Manfred R. Strecker   +8 more
wiley   +1 more source

Resolving Crustal and Subcrustal Dynamic Sources in Continental Arc Magmas: The Cenozoic Andean Arc of Central Chile

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.
Abstract The Andean margin of Central Chile (∼32°40′–34°30′S) records abundant Cenozoic arc magmatic activity with variable compositional characteristics. This is examined through the analysis of an extensive database of new and published whole‐rock geochemistry and Sr‐Nd isotopic compositions, in addition to zircon Hf and O isotopic compositions.
M. Muñoz‐Gómez, C. M. Fanning, F. Tapia, I. Payacán, F. Fuentes, M. Farías, R. Charrier, M. Polvé, S. Quiñones, K. Deckart, A. Fock   +10 more
wiley   +1 more source

Written in bones: palaeoclimate histotaphonomic history inferred from a complete Megatherium skeleton preserved in the Atacama Desert

Palaeontology, Volume 68, Issue 4, July/August 2025.
Abstract A nearly complete and relatively well‐preserved skeleton of the giant ground sloth Megatherium sp. in the hyperarid core of the Atacama Desert reveals how climate related taphonomic processes drastically transformed these remains over time.
Luisa Straulino Mainou, Jacqueline Correa‐Lau, Rafael Labarca, Natalia A. Villavicencio, Vivien G. Standen, Susana Monsalve, Paula C. Ugalde, Sergey Sedov, Teresa Pi Puig, Alan Ulises Loredo‐Jasso, Francisco J. Caro, Gabriela M. Jarpa, Patricia Hernández‐Michaud, Claudio Latorre, Calogero M. Santoro   +14 more
wiley   +1 more source

Systematic meteorite collection in the Catalina Dense Collection area (Chile): Description and statistics

Meteoritics &Planetary Science, Volume 60, Issue 2, Page 308-323, February 2025.
Abstract We present the outcome of search campaigns conducted in the Catalina Dense Collection area (DCA) located in the central depression of the Atacama Desert, Chile. The “Catalina Systematic Collection” (CSC) was assembled through systematic on‐foot searches, resulting in a total of 1599 meteorites, before pairing, collected over a surface of 6.80 ...
Carine Sadaka, Jérôme Gattacceca, Matthieu Gounelle, Mathieu Roskosz, Anthony Lagain, Romain Tartese, Lydie Bonal, Clara Maurel, Rodrigo Martinez, Millarca Valenzuela   +9 more
wiley   +1 more source

Pinturas rupestres y contextos arqueológicos de la precordillera de Arica (extremo norte de Chile)

Estudios Atacameños, 2013
Las evidencias de los sitios Pampa El Muerto 3 (PM-3), Pampa El Muerto 8 (PM-8) y Tangani 1 (TAN-1) permiten reafirmar que el arte rupestre de la precordillera en el extremo norte de Chile se asocia a una colonización más bien tardía de este espacio ...
Marcela Alejandra Sepúlveda Retamal, María Magdalena García Barra, Carlos Alfonso Carrasco González, Calogero Santoro   +3 more
doaj  

The Role of Orogenic Collapse on Tectonic Inheritance of Passive Continental Margins

Tectonics, Volume 44, Issue 1, January 2025.
Abstract The break‐up and drift of continents is governed by the reactivation of structures in the lithosphere that occur in preference to formation of new structures during rifting. Numerical analyses indicate that mantle heterogeneities should be a first‐order control on tectonic inheritance; however, the importance of mantle relative to crustal ...
Jeffrey Pollock
wiley   +1 more source

Desnaturalizar lo natural. El aluvión de la Quebrada de Macul como proceso social en Santiago de Chile

Antropologías del Sur, 2019
Las formas en que las personas explican los desastres “naturales”, el rol que juega la ciencia, los expertos y el saber “técnico”, permiten dar cuenta de cómo el aluvión de 1993 no se puede entender solamente desde la naturaleza.
Consuelo Biskupovic
doaj   +1 more source

Upper Ordovician (Sandbian) bryozoan fauna from Argentine Precordillera

Journal of Paleontology, 2012
A stenolaemate bryozoan fauna containing 20 species belonging to 18 genera is described from the Las Plantas and Las Aguaditas formations (Upper Ordovician, Sandbian) in San Juan Province, Precordillera of Western Argentina. One genus with one species is new:Argentinodictya lenticulatan. gen. n. sp. (Cryptostomata, Ptilodictyina). Four species are new:
Ernst, Andrej, Carrera, Marcelo Gabriel
openaire   +2 more sources