Geochemistry and geochronology from Cretaceous magmatic and sedimentary rocks at 6°35′ N, western flank of the Central cordillera (Colombian Andes): Magmatic record of arc growth and collision

Jaramillo, J. S.; Cardona, A.; León, Santiago; Valencia, Víctor A.; Vinasco, César Javier

doi:10.1016/j.jsames.2017.04.012

Cited by 56 publications

(68 citation statements)

References 71 publications

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“…The quartz‐rich composition and the presence of micaceous metamorphic lithic fragments, together with a mixed suite of heavy minerals such as clinopyroxene, epidote, clinozoisite, kyanite, rutile, garnet, and tourmaline, suggest that medium to high‐grade metamorphic and intermediate‐acid plutonic rocks, as well as basic volcanic units, were the main sources for these sediments. The U‐Pb detrital signature of sandstones from this unit (samples GR‐30 and BTU‐004) is characterized by Cretaceous and Permo‐Triassic populations, which resemble the crystallization ages from (1) either intermediate, acid plutonic rocks exposed along the axis of the Central Cordillera (e.g., Antioqueño Batholith and Quebradagrande Complex) (J. S. Jaramillo et al, ; Leal‐Mejía, ; Villagómez et al, ) or basic, intermediate intrusives rocks from the Western Cordillera (e.g., Buriticá Tonalite, Buga Batholith, Altamira Gabbro, Santa Fe, and Sabanalarga Batholiths) (Villagómez et al, ; Weber et al, ; Zapata et al, ) and (2) the pre‐Cretaceous metamorphic and igneous basement units of the Central Cordillera (Martens et al, ; Restrepo et al, ; Vinasco et al, ). Minor Paleozoic and older ages are likely to be the result of recycled material from the meta‐sedimentary units that crop out along the Central Cordillera (e.g., Cajamarca Complex) (Cochrane et al, ; Martens et al, ).…”

Section: Resultsmentioning

confidence: 89%

“…Coeval widespread tectonic instability has been documented in the northern Colombian Andes, as suggested by (1) moderately rapid exhumation of the Central Cordillera between 70 and 75 Ma (Villagómez & Spikings, ), (2) changes on the geochemical signature from tholeiitic to high‐K calc‐alkaline of Cretaceous magmatic rocks exposed on the western flank of the Central Cordillera at ca. 70 Ma (J. S. Jaramillo et al, ), and (3) shallowing of sedimentary facies and deformation in the Colombian foreland basins (Bayona et al, ; Cooper et al, ; Gómez et al, ; Mora et al, ).…”

Section: Resultsmentioning

confidence: 99%

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Transition From Collisional to Subduction‐Related Regimes: An Example From Neogene Panama‐Nazca‐South America Interactions

et al. 2018

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A geological transect across the suture separating northwestern South America from the Panama Arc helps document the provenance and thermal history of both crustal domains and the suture zone. During middle Miocene, strata were being accumulated over the suture zone between the Panama Arc and the continental margin. Integrated provenance analyses of those middle Miocene strata show the presence of mixed sources that includes material derived from the two major crustal domains: the old northwestern South American orogens and the younger Panama Arc. Coeval moderately rapid exhumation of Upper Cretaceous to Paleogene sediments forming the reference continental margin is suggested from our inverse thermal modeling. Strata within the suture zone are intruded by ~12 Ma magmatic arc‐related plutons, marking the transition from a collisional orogen to a subduction‐related one. Renewed late Miocene to Pliocene acceleration of the exhumation rates is the consequence of a second tectonic pulse, which is likely to be triggered by the onset of a flat‐slab subduction of the Nazca plate underneath the northernmost Andes of Colombia, suggesting that late Miocene to Pliocene orogeny in the Northern Andes is controlled by at least two different tectonic mechanisms.

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Transition From Collisional to Subduction‐Related Regimes: An Example From Neogene Panama‐Nazca‐South America Interactions

et al. 2018

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“…Las características de los procesos tectónicos de convergencia en la esquina noroccidental de Suramérica son un tema de controversia debido a la colisión y los acrecentamientos de bloques de las cortezas continental y oceánica (Spikings, et al, 2015;Jaramillo, et al, 2017), al cambio de la orientación de la convergencia (Cortés, et al, 2005) y el ángulo de subducción (Bayona, et al, 2012) a lo largo de una margen continental curva, y al origen (autóctono o en el Pacífico) y la composición de los bloques oceánicos al occidente, que se supone que fueron acrecentados (Pindell, et al, 2006).…”

Section: Marco Geológico Regionalunclassified

“…El conocimiento de los sistemas de acumulación del Cretácico al Paleógeno al occidente de la cordillera Central, los procesos de acrecentamiento de bloques y los cambios en los procesos de subducción (velocidad, polaridad y angularidad) en la margen occidental son procesos que condicionaron la conformación de las cadenas montañosas occidentales en el norte de los Andes (Villagómez & Spikings, 2013;Jaramillo, et al, 2017). La correlación de los depósitos sedimentarios cretácicos y paleocenos al occidente de la cordillera Central ameritan una mayor atención y discusión en el futuro, pero no son el objeto de este manuscrito.…”

Section: Marco Geológico Regionalunclassified

“…La línea de costa en la margen noroccidental de Suramérica se localiza en el sector más oriental de la cuenca (Figura 5A); la acumulación en fondos marinos cubre los depósitos Paleozoicos antes expuestos y alcanza los límites del Escudo de Guayana (Etayo, et al, 1976;Villamil, 1999;Sarmiento-Rojas, 2011). Hacia el extremo occidental se desarrollaron arcos de islas volcánicos sobre bloques de corteza mixta (Jaramillo, et al, 2017), los cuales se acrecentaron posteriormente en la margen continental. No hay evidencia de actividad magmática del Coniaciano-Santoniano en la margen continental, la cual cesó en el Cretácico temprano (Bustamante, et al, 2016).…”

Section: Configuración Paleogeográfica Del Conianiano Al Santonianounclassified

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El inicio de la emergencia en los Andes del norte: una perspectiva a partir del registro tectónico-sedimentológico del Coniaciano al Paleoceno

Bayona

2018

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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El norte de los Andes está conformado por varias cadenas montañosas y extensos drenajes que transportan sedimentos a los océanos circundantes. La configuración actual no representa la de los primeros estadios de formación de los Andes del norte. La integración de la información sedimentológica, estratigráfica, geocronológica y de la procedencia de unidades del Coniaciano al Paleoceno expuestas al oriente de la Cordillera Central permite interpretar el cambio en los sistemas de acumulación de ambientes marinos de plataforma a sistemas continentales fluviales y planicies costeras, y establecer la ubicación de los primeros sistemas montañosos y los drenajes que suministraron sedimentos terrígenos a la cuenca. En el Campaniano temprano comenzó la aparición de bloques al occidente sobre la plataforma marina, en tanto que en el Campaniano tardío, emergieron altos intraplaca hacia el oriente, los cuales aumentaron elsuministro de sedimentos terrígenos detríticos al sistema marginal y marino de la cuenca. Los altos intraplaca orientales y el sistema marginal occidental crecieron hacia el norte durante el Maastrichtiano-Paleoceno como producto de los procesos de colisión y acrecentamiento de los bloques alóctonos. Estos levantamientos dieron inicio a varios sistemas de drenaje que cubrieron desde las planicies continentales hasta las marginales adyacentes; sin embargo, la poca capacidad de transporte de sedimentos y la alta tasa de subsidencia favorecieron la acumulación de los sedimentos terrígenos gruesos en canales, planicies y deltas intracontinentales, y solo los sedimentos terrígenos lodosos llegaron a la línea de costa. Esta evolución de los sistemas montañosos y drenajes difiere de lo propuesto por estudios previos que sugieren el crecimiento de altos intraplaca desde el Paleoceno. © 2018. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Geochemistry and geochronology of Permian plutonic rocks at the north‐western margin of Gondwana

et al. 2023

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The occurrence of Permian magmatic rocks in the Colombian Andes is restricted to a few localities. Previous works have focused mainly on explaining its tectonic setting, whereas petrogenesis has received less attention. This study closes this gap by reporting whole‐rock geochemistry, zircon U–Pb geochronology, trace elements and Hf isotopes from massive and mylonitic granitoids along central Colombia to constrain their age, source and petrogenesis. Our results show that the granitoids have a calc‐alkaline character, are rich in light‐rare elements (LREEs) and large‐ion lithophile elements (LILEs), present negative Nb and Ti anomalies, crystallized between ca. 276–265 Ma and show variable εHf(i) values ranging from −1.5 to +1.7. Combining our results with published geochemical, geochronological and isotopic data from this region, we suggest that the Middle Permian granitoids from the Tolima region were formed in a continental magmatic arc installed at the western margin of Gondwana, where partial melting of the mantle wedge and further crustal assimilation of the magmas with an old radiogenic and heterogeneous crust were essential processes for the modification of the source of the magmas that generated the granitoids. The Middle Permian may have reached the peak magmatic conditions (ca. 280–270 Ma), according to the recurrence of ages in this time interval. This period of magmatic activity may have been interrupted by the Triassic extensional period related to the beginning of the Pangea breakup.

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Geochemistry and geochronology from Cretaceous magmatic and sedimentary rocks at 6°35′ N, western flank of the Central cordillera (Colombian Andes): Magmatic record of arc growth and collision

Cited by 56 publications

References 71 publications

Transition From Collisional to Subduction‐Related Regimes: An Example From Neogene Panama‐Nazca‐South America Interactions

Transition From Collisional to Subduction‐Related Regimes: An Example From Neogene Panama‐Nazca‐South America Interactions

El inicio de la emergencia en los Andes del norte: una perspectiva a partir del registro tectónico-sedimentológico del Coniaciano al Paleoceno

Geochemistry and geochronology of Permian plutonic rocks at the north‐western margin of Gondwana

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