Results 31 to 40 of about 213 (157)

The Oldest Known Eocene Loess in the Western United States: Evidence From a Fluvial‐Eolian Transition Zone

open access: yesJournal of Geophysical Research: Earth Surface, Volume 131, Issue 8, August 2026.
Abstract The timing, stratigraphic development, and mechanisms of late Paleogene loess deposition remain poorly understood, yet they are critical to understanding how tectonics, fluvial reworking, and eolian transport interacted during a key interval of western North American landscape evolution.
Shankhadeep Baul, Majie Fan
wiley   +1 more source

La tecnología cerámica en ocupaciones del Holoceno tardío (ca. 1900 años AP) en el valle de Ongamira (Córdoba, Argentina)

open access: yesRelaciones de la Sociedad Argentina de Antropología, 2021
Se presentan los primeros resultados obtenidos del análisis del conjunto cerámico recuperado en las excavaciones del sitio Parque Natural Ongamira 1, localizado en el valle de Ongamira (Ischilín, Córdoba, Argentina).
Andrés Robledo, Leticia Gasparotti
doaj   +1 more source

Fault Friction, Plate Rheology, and Mantle Torques From a Global Dynamic Model of Neotectonics

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Improvements in software, parallel computing, global data sets, and laboratory flow‐laws help to develop the global Earth5 thin‐shell finite‐element model of Bird et al. (2008, https://doi.org/10.1029/2007jb005460) into a benchmark study. All experiments confirm that modeled faults (other than megathrusts) have low effective friction of 0.085 ±
Peter Bird   +2 more
wiley   +1 more source

Giant Porphyry Copper Deposits Caused by a Slab Jamming in the Mantle Transition Zone

open access: yesTerra Nova, Volume 38, Issue 2, Page 106-115, April 2026.
ABSTRACT Two giant porphyry copper deposits in the Southern Central Andes formed during the Miocene–Pliocene transition when a bend in the subducting Juan de Fernández hotspot chain jammed in the mantle transition zone, causing mega‐scale slab‐kinking. This geometry implies mechanical resistance that caused East–West compression and eventually a thrust‐
Nipaporn Nakrong   +5 more
wiley   +1 more source

Cenozoic Age Counterclockwise Rotation in the Northwest End of the Sierras Pampeanas, Argentina

open access: yesOpen Journal of Geology, 2023
Fil: Mon, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán.
Gutierrez, Adolfo Antonio   +4 more
openaire   +2 more sources

Contribución al conocimiento de la flora vascular de alta montaña de la Sierra de Ambato (Catamarca, Argentina)

open access: yesBoletín de la Sociedad Argentina de Botánica, 2022
Introducción y objetivos: Las sierras de Ambato son un cordón montañoso situado en la provincia de Catamarca, Argentina. Cuentan con unos 450 km2ocupados por comunidades vegetales de alta montaña, que no cuentan con estudios exhaustivos. Con el objetivo
Pablo Demaio   +3 more
doaj   +1 more source

Range‐Parallel Extension of the Andes in the 2020 Mw 5.7 Humahuaca Earthquake

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Normal‐faulting earthquakes in mountain ranges provide important constraints on the dynamics of mountain building. To date, well‐documented examples of range‐parallel extension come primarily from the Tibetan Plateau, limiting our ability to test different models for its cause.
Simon Orrego   +3 more
wiley   +1 more source

Middle Pleistocene revelations: unravelling taphonomic processes in mammals including Mesotherium cristatum (Mesotheriidae, Notoungulata), Corralito Site, Córdoba Province, Argentina

open access: yesPalaeontology, Volume 68, Issue 4, July/August 2025.
Abstract Taphonomic studies of Cenozoic mammals are scarce. We report a study of the taphonomy of the Corralito site (Middle Pleistocene to Holocene), Córdoba Province, Argentina, which documents the last population of the South American native ungulate typotherid Mesotherium cristatum. We discovered two specimens of M.
Marcos Fernández‐Monescillo   +6 more
wiley   +1 more source

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

open access: yesCaldasia, 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   +3 more
doaj  

South American Great Basin: Limnogeological analysis of the Salina del Bebedero Basin, Argentina (Late Pleistocene‐recent)

open access: yesThe Depositional Record, Volume 11, Issue 2, Page 739-763, April 2025.
. The Bebedero tectonic depression in San Luis province, Argentina, is a closed drainage basin that has formed as a result of block‐faulting and rifting processes. The Bebedero lake exhibits notable similarities to the endorheic watersheds of the western United States, particularly those of Death Valley, the Saline Valley and, to a lesser extent, the ...
Eimi Ailen Font   +2 more
wiley   +1 more source

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