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Mostrando ítems 31-40 de 1300
First genetic assessment of the level of endemism in the avifauna of the Central Sierras in southern South America
(Wiley Blackwell Publishing, Inc, 2017-05)
The Andes constitute one of the main factors that have promoted diversification in the Neotropics. However, the role of other highland regions in the southern cone of South America has been barely studied. We analyzed the ...
Multi‐Centennial‐Scale Variations of South American Summer Monsoon Intensity in the Southern Central Andes (24–27°S) During the Late Holocene
(American Geophysical Union, 2020-02-28)
Oxygen isotope records of cushion‐plant peat cellulose from the southern central Andes capture evidence for significant environmental changes. We observe that the δ18Ocell peatland record from Cerro Tuzgle (24°S) is in ...
Late Holocene dynamics of the south American summer monsoon: New insights from the Andes of northern Chile (21°S)
(Pergamon-Elsevier Science Ltd, 2020-10)
The South American summer monsoon (SASM) is the most important climate system of tropical South America, transporting moisture from the tropical Atlantic Ocean to the core of the continent during the austral summer. Recent ...
Miocene orographic uplift forces rapid hydrological change in the southern central Andes
(Nature Publishing Group, 2016-10)
Rainfall in the central Andes associated with the South American Monsoon and the South American Low-Level Jet results from orographic effects on atmospheric circulation exerted by the Andean Plateau and the Eastern Cordillera. ...
The genetic history of the Southern Andes from present-day Mapuche ancestry
(2023)
The southernmost regions of South America harbor some of the earliest evidence of human presence in the Americas. However, connections with the rest of the continent and the contextualization of present-day indigenous ...
Extensional tectonics during Late Cretaceous evolution of the Southern Central Andes: Evidence from the Chilean main range at ~35°S
(Elsevier Science, 2018-10)
The study of Late Cretaceous-earliest Paleogene series in the Chilean Andes at ~35°S provides new constraints on the coeval evolution of the area and the Southern Central Andes. These correspond to the continental series ...
Bone tools of Late Holocene hunter-gatherer-fishers of North-Central Chile: Case study of the Punta Teatinos assemblage
(John Wiley and Sons Ltd, 2019)
During the Late Holocene, important changes can be identified in the social dynamics of hunter-gatherer populations in different regions of the Southern Andes. These transformations are associated with processes of demographic ...
Deglacial and postglacial vegetation changes on the eastern slopes of the central Patagonian Andes (47°S)
(2012)
We report pollen, spore, and charcoal records from Lago Augusta (47°05'S, 72°23'W, 440m a.s.l.), a small closed-basin lake located near the modern forest-steppe ecotone east of the Andes in Central Patagonia, Chile. The ...
Sedimentologic and stratigraphic evolution of the Cacheuta basin: Constraints on the development of the Miocene retroarc foreland basin, south-central Andes
(Geological Society of America, 2018-06)
Retroarc foreland basins in contractional arc settings contain evidence of temporal and spatial variations in magmatic activity, deformation, and exhumation along the continental margin and serve as excellent recorders of ...
Decadal variability in the austral summer precipitation over the Central Andes: Observations and the empirical-statistical downscaling model
(Royal Meteorological Society, 2022-09-16)
The decadal variability in summer precipitation over the Central Andes (10°–30°S) is investigated from 1921 to 2010 using low-pass filtered time series of the central and eastern El Niño–Southern Oscillation (ENSO) Pacific ...