Germán Bayona

Colombian Geological Survey

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A. Cardona

Universidad Nacional de Colombia

Camilo Montes

Universidad del Norte

Carlos Jaramillo

Smithsonian Tropical Research Institute

V. Valencia

Washington State University

Andrés Mora

Ecopetrol (Colombia)

Giovanny Jiménez

Hospital General de México

María Dolores Hernández Rueda

Dirección de Investigación y Desarrollo

G. Ojeda

Ecopetrol (Colombia)

Martín Cortés

Ecopetrol (Colombia)

Giovanny Nova

Universidade de São Paulo

Cooperative Institutions

Smithsonian Tropical Research Institute

Colombian Geological Survey

Universidad de Los Andes

Ecopetrol (Colombia)

Universidad Nacional de Colombia

Universidad Nacional Autónoma de México

Smithsonian Institution

Instituto Colombiano del Petróleo y Energías de la Transición - Icpet

University of Arizona

Universidade de São Paulo

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Unraveling tectonic inversion and wrench deformation in the Eastern Cordillera (Northern Andes) with paleomagnetic and AMS data

Tectonophysics (2022)

Giovanny Jiménez J. W. Geissman Germán Bayona

Massif

Clockwise

Apparent polar wander

10.1016/j.tecto.2022.229356

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Citations (7)

Uso de minerales pesados en análisis de procedencia sedimentaria (aproximación en Colombia)

Geología Colombiana (2012)

F. Lamus-Ochoa Germán Bayona A. Cardona

El uso de minerales pesados en sucesiones siliciclasticas ha demostrado ser una poderosa herramienta para determinar la roca fuente de dichos detritos, ademas de ser ampliamente utilizada en la correlacion estratigrafica de sucesiones con ausencia de registro bioestratigrafico. Petrograficamente es muy comun encontrarlos, casi siempre en proporciones inferiores al 3% y es por ello que para su estudio se hace necesario concentrarlos. La tecnica mas utilizada en arenitas es desagregarlas, luego con la fraccion de arena fina a muy fina (0,063- 0,125mm), se separa la fraccion densa mediante el uso de liquidos densos (ρ>2,8). Multiples factores pueden afectar las asociaciones de minerales pesados (efectos hidraulicos, diageneticos, meteorizacion, etc.); es por ello que esta tecnica debe ser complementada con otras para obtener mejores resultados.

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The Colombian geochronological database (CGD)

Figshare (2022)

Andres Felipe Rodriguez-Corcho Yamirka Rojas‐Agramonte Johana A. Barrera-Gonzalez María P. Marroquín-Gómez Sarah Bonilla-Correa

Geochronological databases are powerful tools for characterizing the crustal evolution and the age spectra of a region and allow comparison with other areas at a regional scale. In this contribution, we present the Colombian Geochronological Database (CGD), which contains a curated compilation of ca. 67,406 individual published U-Th-Pb, K-Ar, Ar-Ar, Rb-Sr, Sm-Nd, Lu-Hf, Fission-track, U-Th-He, and Re-Os mineral and whole rock ages that are reported in the published literature. Each date includes geographic coordinates, geological setting, petrologic and chemical information extracted from the respective publications. The structure of the database provides a powerful interface for constructing queries and allows searching and extracting information on geographic domains, provinces, stratigraphic units, isotopic systems, date interpretations, references, etc. This information establishes a framework for regional and global geological interpretations with geochronological, stratigraphic, structural and palaeogeographic implications. With the present effort we present to the geoscience community a clear insight, from a regional perspective, to the geology and tectonics of Colombia since Precambrian times. The comparison of all (detrital and magmatic) single zircon U-Pb dates from the Colombian (Gondwana sourced) geochronological database with the Global and North American (Laurentia sourced) databases provides a temporal constraint on the evolution of the South American continent. U-Pb zircon ages in Colombia define 13 peak clusters centred at 1767, 1530, 1325, 1178, 1007, 605,540, 468, 271, 237, 182, 76 and 10 Ma but of those, only few have a good correlation in all three databases: 1007 (Grenvillian/Orinoquian/Putumayo Orogeny), 605 (Braziliano/Pan-African Orogeny), 468 (Famatinian/Taconic Orogeny), and 182 Ma (Break-up of Pangea) zircon peaks. This correlation suggests that some tectonic events in Colombia are global and might represent crustal production and preservation while the other peaks might just represent local arc magmatic events.

10.6084/m9.figshare.15161153

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Quantifying Wide-Area Continental Deformation: Palinspastic Reconstruction of the Northern Andes

AGUFM (2017)

Camilo Montes Andres Felipe Rodriguez-Corcho Natalia Hoyos Antonio Cardona Germán Bayona

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Deformation Analysis of Curved Folds in the Southern Upper Magdalena Valley. Colombia

AGU Fall Meeting Abstracts (2008)

Giovanny Jiménez Germán Bayona C. Silva Augusto E. Rapalini Ricardo I.F. Trindade

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Resultados Paleomagnéticos en unidades del Paleógeno de Colombia y oeste de Venezuela, y posibles usos para la caracterización de contactos discordantes

Geología Colombiana (2006)

Germán Bayona Carlos Jaramillo Andrés Reyes Harker

Analisis de paleomagnetismo en diferentes unidades del Cretacico mas superior y Paleogeno entres secciones ubicadas en Rio Loro (Andes de Merida, Venezuela), La Guajira (mina del Cerrejon,Colombia) y Cosgua (Cordillera Oriental de Colombia) indican eventos de remagnetizacion quedificultan aislar el componente primario de magnetizacion. A pesar de las bajas intensidades demagnetizacion y la generacion de oxidos a temperaturas >350oC, dos probables componentes demagnetizacion fueron aislados utilizando metodos de desmagnetizacion termal y campos alternos. Elcomponente A fue aislado en la mayoria de las unidades estudiadas con temperaturas de desbloqueo/coercividades que varian con la litologia. En las tres secciones, la direccion media sin correccion porbuzamiento de la componente A es estadisticamente identica con declinacion al norte e inclinacionespositivas de moderado a bajo angulo. La dispersion de las direcciones aumenta considerablementeal hacer la correccion por buzamiento, sugiriendo un evento de remagnetizacion post-deformacion.Este componente fue aislado principalmente en intervalos arenosos o en estratos limitados pordiscordancias tipo paraconformidad y disconformidad. De igual manera, la Magnetizacion RemanenteNatural aumenta considerablemente en estos contactos, sugiriendo un control estratigrafico en lamigracion de fluidos orogenicos. El componente B fue aislado en pocos especimenes de la FormacionCatatumbo en Rio Loro y en las tres unidades estudiadas en La Guajira. Despues de la correccionpor buzamiento, las direcciones del componente B se agrupan en dos direcciones, una normal yotra inversa, siguiendo una distribucion no Fisheriana. Los resultados del componente B no sonestadisticamente significativos para determinar si este componente corresponde a un evento deremagnetizacion o es primario. En futuros estudios de magnetoestratigrafia se recomienda incluiranalisis de la mineralogia magnetica y aumentar la cantidad de muestreo por sitio (al menos 10muestras por sitio), enfocando principalmente en unidades lodosas o en intercalaciones arena-lodoy alejado de los contactos discordantes. Para la caracterizacion de contactos se recomienda unmuestreo cada metro en las unidades infrayacentes y suprayacentes al contacto.

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A Middle to Late Miocene Trans-Andean Portal: Geologic Record in the Tatacoa Desert

Frontiers in Earth Science (2021)

Camilo Montes C. A. Silva Germán Bayona Robinson O Villamil Elena Stiles

Integration of several geologic lines of evidence reveals the prevalence of a lowland trans-Andean portal communicating western Amazonia and the westernmost Andes from at least middle Miocene until Pliocene times. Volcanism and crustal shortening built up relief in the southernmost Central and Eastern Cordilleras of Colombia, closing this lowland gap. Independent lines of evidence consist first, of field mapping in the Tatacoa Desert with a coverage area of ∼381 km 2 , 1,165 km of geological contact traces, 164 structural data points, and 3D aerial digital mapping models. This map documents the beginning of southward propagation of the southernmost tip of the Eastern Cordillera’s west-verging, fold-and-thrust belt between ∼12.2 and 13.7 Ma. Second, a compilation of new and published detrital zircon geochronology in middle Miocene strata of the Tatacoa Desert shows three distinctive age populations: middle Miocene, middle Eocene, and Jurassic; the first two sourced west of the Central Cordillera, the latter in the Magdalena Valley. Similar populations with the three distinctive peaks have now been recovered in western Amazonian middle Miocene strata. These observations, along with published molecular and fossil fish data, suggest that by Serravallian times (∼13 Ma), the Northern Andes were separated from the Central Andes at ∼3°N by a fluvial system that flowed into the Amazon Basin through the Tatacoa Desert. This paleogeographic configuration would be similar to a Western Andean, or Marañon Portal. Late Miocene flattening of the subducting Nazca slab caused the eastward migration of the Miocene volcanic arc, so that starting at ∼4 Ma, large composite volcanoes were built up along the axis of today's Central Cordillera, closing this lowland Andean portal and altering the drainage patterns to resemble a modern configuration.

Geochronology

Middle Miocene disruption

Neogene

10.3389/feart.2020.587022

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Citations (55)

Strain partitioning and orogeny during multiple plate interaction - Impact of subduction and collision in the Northern Andes

Authorea (Authorea) (2024)

Román González Afanador Eline Le Breton Sabrina Metzger Andrés Mora Germán Bayona

Orogeny

Strain (injury)

10.22541/essoar.172167064.49096669/v1

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Constraints on the Cenozoic Deformation of the Northern Eastern Cordillera, Colombia

Tectonics (2018)

Gaia Siravo Maria Giuditta Fellin Claudio Faccenna Germán Bayona Federico Lucci

Abstract The Eastern Cordillera of Colombia rose to maximum elevations of >5 km during the Cenozoic by inversion of a Mesozoic rift basin. Previous studies proposed that the exhumation of the Eastern Cordillera increased from ~6 Ma to the present due to the interplay between tectonic shortening and climate. In this study, we integrate new field observations, structural data, low‐temperature thermochronology, thermobarometry, and vitrinite reflectance along a section through the Tablazo, Cocuy, and Llanos regions to estimate the amount of shortening and the exhumation history. Our results indicate that shortening started as early as the latest Maastrichtian‐Paleocene in the Tablazo and Cocuy regions. Exhumation migrated eastward, starting in the Paleocene in the west and continuing in the Miocene in the east. The amount and rate of exhumation peaked in the Cocuy region with values of <5 km and < 0.4 km/Ma, respectively. At the highest elevations in the Cocuy Sierra, we also found evidence of a low‐pressure/high‐temperature metamorphic overprint, possibly related to shallow and local magmatic intrusions that occurred in the Late Miocene. Our cross‐section interpretation suggests a low amount of shortening (13%) that is mainly accommodated by high‐angle inverted faults and by the frontal thrust system. The presence of shallow magmatic bodies, moderate exhumation, and low shortening raises questions about the processes (isostatic versus dynamic) that drove the topographic growth of the high Cocuy Sierra.

Thermochronology

Tectonic uplift

10.1029/2018tc005162

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Citations (24)

DETAILED STRATIGRAPHY OF UPPER JURASSIC SEDIMENTARY AND VOLCANOCLASTIC ROCKS FROM WESTERN PANGEA OUTCROPPING ALONG THE PROTO CARIBBEAN

Abstracts with programs - Geological Society of America (2016)

Giovanny Nova Germán Bayona Juan Carlos Silva‐Tamayo Paola Montaño Camilo Montes

Outcrop

10.1130/abs/2016am-285953

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