A5003279840- Geological and Tectonic Studies in Latin America
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Botany and Geology in Latin America and Caribbean
- Reservoir Engineering and Simulation Methods
- Environmental and Cultural Studies in Latin America and Beyond
- Genomics and Phylogenetic Studies
- Cryospheric studies and observations
- Arsenic contamination and mitigation
- Polar Research and Ecology
- Oil and Gas Production Techniques
- Archaeology and ancient environmental studies
- Geology and Paleoclimatology Research
- Archaeology and Natural History
- Geological Studies and Exploration
- Archaeological Research and Protection
- Geological and Geophysical Studies Worldwide
- High-pressure geophysics and materials
- Geochemistry and Geologic Mapping
- Maritime and Coastal Archaeology
Pontifical Catholic University of Peru
2024-2025
Universidad Nacional de Colombia
2014-2024
Smithsonian Tropical Research Institute
2022
Universidad de Medellín
2018
Austral University of Chile
2008
Abstract A geological transect across the suture separating northwestern South America from Panama Arc helps document provenance and thermal history of both crustal domains zone. During middle Miocene, strata were being accumulated over zone between continental margin. Integrated analyses those Miocene show presence mixed sources that includes material derived two major domains: old American orogens younger Arc. Coeval moderately rapid exhumation Upper Cretaceous to Paleogene sediments...
Abstract Subduction of the Nazca and Caribbean Plates beneath northwestern Colombia is seen in two distinct Wadati Benioff Zones, one associated with a flat slab to north normal subduction south 5.5°N. The region characterized by an active arc, whereas has no known Holocene volcanism. We analyze volcanic patterns over past 14 Ma show that mid‐Miocene continuous arc extended up 7°N, indicating Plate all along Colombia's Pacific margin. However, ~6 Ma, we find complete cessation this 3°N,...
Abstract Miocene strike‐slip tectonics was responsible for creating and closing short‐lived (ca. 6 Ma) passages the emergence of isolated topography in Northern Andes. These geological events likely influenced migration and/or isolation biological populations. To better understand paleogeography hinterland foreland regions Andes, we conducted a source‐to‐sink approach Magdalena Basin. This basin is located between Central Eastern Cordilleras Colombia contains an ample record, which includes...
Extensional and flexural basins can evolve through multiple stages under the same plate tectonic regime over tens of millions years. The Cretaceous evolution Colombian Andes is characterized by shifts between contractional extensional tectonics. upper response to these changes recorded in sedimentary rocks along Western, Central, Eastern cordilleras, their adjacent basins, including Upper Magdalena hinterland basin. We integrated field observations, petrography, geochronology,...
Marginal basins are the result of extensional tectonics along convergent margins. These include an early stage seafloor spreading that, in some cases, is followed by tectonic inversion and deformation basin formation a new magmatic arc front. The Early Cretaceous South American Plate caused development multiple pre-Andean back-arc marginal continental margin. were inverted during onset Andean orogeny Late Cretaceous. For instance, Northern Andes, remnants this history found Central...
Resumen Documentamos el primer registro de Florisuga mellivora en la estación anillamiento del Parque Nacional Isla Contoy y confirmamos presencia especie al norte estado Quintana Roo. Esta observación representa un potencial accidental para especie, lejos su área distribución conocida. Palabras clave Caribe Mexicano, distribución, anillamiento, mellivora, Contoy, monitoreo, península Yucatán Abstract First report of (White-necked Jacobin) in National Park, Roo, Mexico • We document the...
Estratigrafía de un Lagerstätte neotropical del Mioceno medio (localidad La Venta, Colombia). El Konzentrat-Lagerstätte la localidad Venta registrado en el Grupo Honda contiene información invaluable sobre respuesta biótica a los cambios climáticos Transición Climática Mioceno. Su registro fósil ha sido estudiado durante casi siglo y ofrece una las mejores ventanas ecosistemas terrestres Neotrópico Neógeno. Hemos compilado todos estudios publicados y, utilizando correlación gráfica mapa...
A multi-technique provenance analysis, together with whole-rock geochemistry from arc related volcano-sedimentary rocks of the Albian-Aptian Quebradagrande Complex (Central Colombian Andes, Northern Andes), were conducted to reconstruct tectono-stratigraphic relations adjacent Early Cretaceous subduction/accretion Arquía Complex, in order understand tectonic modification Andean margin before onset orogeny.The presence olivine, spinel, serpentine, high-pressure garnets and glaucophane...
Abstract Long‐lived orogens are often characterized by basement blocks affected polyphase thick‐skinned deformation. Deciphering these events is challenging due to the heterogeneous and complex structural histories resulting from superposition of multiple deformation phases. For instance, Central Cordillera Colombia was shaped tectonic phases during Mesozoic Cenozoic, which have been poorly constrained in both space time. To unravel history this mountain belt, we conducted field mapping...
Abstract The Eastern Cordillera of Colombia, in the northern Andes, is an example orogen which Mesozoic basins were compressed during Cenozoic, forming a ~2,500‐m‐high plateau its portion. Significant shortening and crustal thickening have contributed to construction present topography elevation. In this contribution, we combine use teleseismic receiver functions, Hf isotopes, whole‐rock geochemistry, U‐Pb dating help elucidate main mechanisms that played role uplift cordillera. Receiver...
Abstract Aim In geographically and ecologically heterogeneous landscapes, such as tropical mountains, widely distributed species may be informative proxies for studying landscape climatic evolution. We explore historical vicariant dispersal processes that have determined the genetic structure variation of a palm complex living in cloud forests. hypothesize genomic groupings reflect uplift‐based isolation by vicariance, divergence via events driven faulted montane segments or recent due to...
Abstract The Paleocene‐early Eocene continental magmatic arc (PECMA) in the Northern Andes is an example of magmatism following a major collisional event. This formed after arc‐continent collision between Caribbean Plate and South American margin at ca. 72 Ma. We used detrital zircon LA‐ICP‐MS CA‐ID‐TIMS geochronology geochemistry to complement limited plutonic record PECMA better characterize PECMA's evolution. Zircon their respective trace element were analyzed from strata Bogotá Formation...
Abstract The first analyses of biological components in glaciers the Chilean lake district are presented based on microalgae biovolume, pollen and other microorganisms detected shallow (∼10 m) firn/ice cores. Three cores were retrieved, two at Volcán Mocho-Choshuenco (39°55′ S, 72°02′ W; summit 2422 m a.s.l; east glacier 2000 a.s.l.), one Osorno (41°06′ 72°30′ 2652 a.s.l.). Microalgae, protozoa quantified samples obtained from show clear fluctuations interpreted as seasonal signs. In...
Extensional and compressional basins can evolve over tens of millions years through multiple stages under the same tectonic regime. The Cretaceous evolution Colombian Andes is characterized by shifts between compressional, neutral, extensional tectonics. upper plate response to these changes recorded in sedimentary rocks along Western, Central, Eastern cordilleras, as well their bounding basins, including Upper Magdalena Basin. We integrated field observations, petrography, geochronology,...