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A widespread compositionally bimodal tephra sourced from Volcan Melimoyu (44 degrees S, Northern Patagonian Andes): Insights into magmatic reservoir processes and opportunities for regional correlation
(2018)
We describe the stratigraphy, age, constituent geochemistry and phenocryst thermobarometry of a closely spaced Holocene tephra couplet from Volcan Melimoyu (VMm), located in the Northern Patagonian Andes. The lower tephra ...
Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina
(Taylor & Francis, 2017-08-31)
In Patagonia, arid and semiarid lands are being affected both by inappropriate management practices, which are leading to degradation, and by volcanic activity, whose effects are still unclear. This study aimed to test ...
Stratigraphy, age and correlation of Lepué Tephra: a widespread c. 11 000 cal a BP marker horizon sourced from the Chaitén Sector of southern Chile
(John Wiley & Sons Ltd, 2017-08)
We describe the stratigraphy, age and correlation of a prominent tephra marker, named Lepué Tephra, extensively distributed in north-western Patagonia. Lepué Tephra is well dated at c. 11 000 cal a BP from numerous lake ...
Remobilized Cordón Caulle 2011 tephra deposits in north-Patagonian watersheds: Resedimentation at deltaic environments and its implications
(Elsevier Science, 2019-09)
The Argentinean side of the Andean North Patagonia is drained by several fluvio-lacustrine systems flowing eastwards from their headwaters at the Andes mountains towards large glacial lakes. These watersheds are recurrently ...
Historical eruptions of Lautaro Volcano and their impacts on lacustrine ecosystems in southern Argentina
(Springer, 2019-06-14)
Lacustrine sediment sequences were obtained from Lagunas Verde and Gemelas Este, two small lakes located east of the southern Patagonian Ice Field and close to the village of El Chaltén, in Argentinian Patagonia. Four ...
Centennial and millennial-scale dynamics in Araucaria- Nothofagus forests in the southern Andes
(Wiley, 2020)
Aim To assess the relative roles of long-term (millennial-scale) climatic change, fire and volcanic disturbance on the dynamics of Araucaria-Nothofagus forests of south-central Chile. Through this analysis, we provide ...
Chronological and geomorphological approach to the Holocene tephras from Tafí and Santa María valleys, NW Argentina
(Cambridge University Press, 2020-03)
A comprehensive morphostratigraphic and chronological study of the complete set of Holocene tephras from Tafí and Santa María valleys (northwestern Argentina), including analyses of compositional characteristics, is ...
Insight into the CE 1600 Huaynaputina Plinian tephra, combining the re-analysis of observational datasets with recent methods for tephra dispersal modelling
(Istituto Nazionale di Geofisica e VulcanologiaITA, 2018)
In the Central Andes, large Plinian eruptions (VEI ≥ 6) occur at a relatively high frequency: one every 2000 to 4000 years over the past 50,000 years in southern Peru. This recurring, explosive activity poses a challenge ...
Nothofagus pumilio forest affected by recent tephra deposition in northern patagonia. I-environmental traits influencing seedling growth
(Sociedad Chilena de la Ciencia del Suelo, 2018-06)
The 2011 Puyehue-Cordón Caulle volcanic eruption left vast areas of Nothofagus pumilio forests covered by high volumes of tephra, which buried the understory. This event offered a unique opportunity to analyse the impact ...