A5036296729- Geological and Tectonic Studies in Latin America
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geological formations and processes
- Geological and Geophysical Studies
- Geochemistry and Geologic Mapping
- Maritime and Coastal Archaeology
- Fish biology, ecology, and behavior
- Geological and Geophysical Studies Worldwide
- Reservoir Engineering and Simulation Methods
- Geological Studies and Exploration
- Hydrocarbon exploration and reservoir analysis
National Polytechnic School
2017-2023
ETH Zurich
2002-2009
Institute of Geology and Geophysics
2009
Abstract The determination of accurate and precise ages for the timing collision between oceanic plateaus continental crust requires an understanding how indenting buttressing plates respond to collision. We present geochronological, thermochronological, geochemical isotopic analyses magmatic rocks from Ecuadorian Andes, which relate Late Cretaceous Caribbean Plateau Great Arc sequence with NW South America. cessation subduction magmatism during 65–64 Ma beneath eastern edge was synchronous...
The onset of orogenic shortening in the northern Andes Mountains coincided with latest Cretaceous accretion Caribbean oceanic plateau. We present isotopic data (εHf zircon and εNd) coupled arc position to test whether led abrupt crustal thickening Ecuador Colombia. A rapid excursion toward more evolved compositions was synchronous ca. 75–70 Ma collision preceded a similar deviation Colombia at 70–55 Ma. but diachronous shift signatures is attributed progressive northward plateau associated...
Abstract Recognizing detrital contributions from sediment source regions is fundamental to provenance studies of active and ancient orogenic settings. Detrital zircon U-Pb geochronology unconsolidated sands modern rivers that have catchments with contrasting bedrock signatures provides insight into the fidelity age in discriminating tectonic downstream propagation environmental signals. We present 1705 new ages for 15 samples river 12 over a large spatial extent Ecuador (∼1°N–5°S ∼79°–77°W)....
The Silante Formation is a thick series of continental deposits, exposed along trench-parallel distance approximately 300 km within the Western Cordillera Ecuador. origin, tectonic setting, age and stratigraphic relationships are poorly known, although these key to understand Cenozoic evolution Ecuadorian Andes. We present new sedimentological, stratigraphic, petrographic, radiometric provenance data from underlying rocks. detailed analysis shows that unconformably overlies Paleocene...
Tectonic models of the Early Cretaceous Andean margin in Ecuador are hindered by a paucity accurate crystallisation ages igneous rocks. The Alao Arc, situated on western flank Cordillera Real Ecuador, is mainly composed submarine altered basalts to andesites, and most deformed areas frequently modified greenschist metamorphism. To improve our knowledge evolution northern Andes prior accretion Caribbean Large Igneous Province we attempt constrain tectonic origin age arc's volcanic rocks,...
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Tectonic models of the Early Cretaceous Andean margin in Ecuador are hindered by a paucity accurate crystallisation ages igneous rocks. Volcanic rocks Alao arc form western flank Cordillera Real Ecuador. The is mainly composed altered basalts to andesites, which frequently modified greenschist metamorphism, and these barren zircon baddeleyite. We present new 40Ar/39Ar analyses groundmass plagioclase, have been used estimate time arc. These combined with whole rock geochemistry isotopic...