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Funded by the Swiss National Science Foundation (Postdoc.Mobility) and hosted in the Trinity College Dublin, I am working for two years on subduction systematics based on radiogenic isotopes and the development of the Antarctic ranges. From 2022 until 2023 it allowed me to carry out fieldwork in Patagonia and Antarctica thanks to the guidance and collaboration of David Chew (TCD).
The used methods are:
LA-ICP-MS U-Pb in zircon and apatite (Trinity College of Dublin).
Bastias-Silva et al. (2023) - Solid Earth
Bastias-Silva et al. (2023) - Solid Earth
Uplift of the Ellsworth Mountains, Antarctica
Jurassic and Cretaceous formation of the Ellsworth Mountains
Oldest current geography of Antarctica
find more HERE
Navarrete et al. (2023) - Journal of Geodynamics
Navarrete et al. (2023) - Journal of Geodynamics
Peri-cratonic lithosphere, located away from continental margins, is sensitive to far-field stresses propagating from active plate margins
Tectonic evolution of the eastern Deseado Massif in central-southern Patagonia
Geological events preserved in the Deseado Massif provide a key deformational record of the distal effects along the southwestern active margin of Gondwana
find more HERE
Velasquez et al. (2023) - Geological Society
Velasquez et al. (2023) - Geological Society
Magmatic evolution of the arc in the Fuegian Andes (southern Patagonia)
How did the arc evolved?
Migrations and compositional changes
find more HERE
Burton-Johnson et al. (2023) - Tectonics
Burton-Johnson et al. (2023) - Tectonics
How and when did the subduction of the Antarctic Peninsula waned?
The most relevant factors: age of the subducted slab and convergence rate
Arc magmatism cease more than ca. 5 Ma prior to subduction cessation
find more HERE
Bastias et al. (2023) - Frontiers in Earth Science
Bastias et al. (2023) - Frontiers in Earth Science
Tectonostratigraphical evolution of the South Shetland Islands
New geological map, updated to the lastest contributions
Three stages evolution: (i) deep marine sedimentation, (ii) sub-aerial continental volcanism and (iii) glacio-marine sedimentation
find more HERE
Riley et al. (2023) - Tectonics
Riley et al. (2023) - Tectonics
What is the tectonic origin of Alexander Island
What is the origin of Alexander Island?
Is there a relationship of these units with outhers found in the Antarctic Peninsula or elsewhere?
find more HERE
Gao et al. (2023) - Journal of Geophysical Research
Gao et al. (2023) - Journal of Geophysical Research
Plate reconstruction of the northern Antarctic Peninsula using paleomagnetic data
Five periods are recognised with their own evolution
The models helps to understand the magmatism and tectonic evolution in the Scotia Sea
find more HERE
Riley et al. (2023) - Earth-Science Reviews
Riley et al. (2023) - Earth-Science Reviews
The evolution of the Antarctic Peninsula in the context of Gondwana
Evaluation and revision of the Paleozoic and early Mesozoic units exposed in the Antarctic Peninsula
Subduction slab dynamics throughout the activity of the margin
find more HERE
Bastias et al. (2022) - Journal of the Geological Society
Bastias et al. (2022) - Journal of the Geological Society
Cretaceous arc magmatism in the Antarctic Peninsula
Flat-slab in southern Antarctic Peninsula during the Cretaceous
What is the origin of Alexander Island?
find more HERE
Palape et al. (2022) - Frontiers in Earth Science
Palape et al. (2022) - Frontiers in Earth Science
Forearc tetonics during the Paleozoic in Patagonia
The tectonic evolution North Patagonia
Basin evolution history
find more HERE
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