Abstract: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 char… Show more
“…Here, we focus on the features influencing crustal motions controlling postglacial RSL changes. For in-depth accounts of the geology and tectonics of NW South America, we suggest seminal works by Nygren (1950), Duque-Caro (1990a, 1990b), Vernette et al (1992), Kellogg and Vega (1995), Colmenares and Zoback (2003), and IGAC and INGEOMINAS (2006), as well as more recent accounts by Cediel and Shaw (2019), Montes et al (2019), Bustamante et al (2016, 2024), Restrepo et al (2021, 2023), and references therein. …”
Section: Introductionsupporting
confidence: 72%
“…Here, we focus on the features influencing crustal motions controlling postglacial RSL changes. For in-depth accounts of the geology and tectonics of NW South America, we suggest seminal works by Nygren (1950), Duque-Caro (1990a, 1990b, Vernette et al (1992), Kellogg and Vega (1995), Colmenares andZoback (2003), andIGAC andINGEOMINAS (2006), as well as more recent accounts by Cediel and Shaw (2019), Montes et al (2019), Bustamante et al (2016Bustamante et al ( , 2024, Restrepo et al ( , 2023, and references therein.…”
Section: Geology Of Nw South America and Coastal Colombiamentioning
Predicting coastal change depends upon our knowledge of postglacial relative sea-level variability, partly controlled by glacio-isostatic responses to ice-sheet melting. Here, we reconstruct the postglacial relative sea-level changes along the Caribbean and Pacific coasts of northwestern South America by numerically solving the sea-level equation with two scenarios of mantle viscosity: global standard average and high viscosity. Our results with the standard model (applicable to the Pacific coast) agree with earlier studies by indicating a mid-Northgrippian high stand of ~2 m. The high-viscosity simulation (relevant to the Caribbean coast) shows that the transition from far- to intermediate-field influence of the Laurentide Ice Sheet occurs between Manzanillo del Mar and the Gulf of Morrosquillo. South of this location, the Colombian Caribbean coast has exhibited a still stand with a nearly constant Holocene relative sea level. By analyzing our simulations considering sea-level indicators, we argue that tectonics is more prominent than previously assumed, especially along the Caribbean coast. This influence prevents a simplified view of regional relative sea-level changes on the northwestern South American coast.
“…Here, we focus on the features influencing crustal motions controlling postglacial RSL changes. For in-depth accounts of the geology and tectonics of NW South America, we suggest seminal works by Nygren (1950), Duque-Caro (1990a, 1990b), Vernette et al (1992), Kellogg and Vega (1995), Colmenares and Zoback (2003), and IGAC and INGEOMINAS (2006), as well as more recent accounts by Cediel and Shaw (2019), Montes et al (2019), Bustamante et al (2016, 2024), Restrepo et al (2021, 2023), and references therein. …”
Section: Introductionsupporting
confidence: 72%
“…Here, we focus on the features influencing crustal motions controlling postglacial RSL changes. For in-depth accounts of the geology and tectonics of NW South America, we suggest seminal works by Nygren (1950), Duque-Caro (1990a, 1990b, Vernette et al (1992), Kellogg and Vega (1995), Colmenares andZoback (2003), andIGAC andINGEOMINAS (2006), as well as more recent accounts by Cediel and Shaw (2019), Montes et al (2019), Bustamante et al (2016Bustamante et al ( , 2024, Restrepo et al ( , 2023, and references therein.…”
Section: Geology Of Nw South America and Coastal Colombiamentioning
Predicting coastal change depends upon our knowledge of postglacial relative sea-level variability, partly controlled by glacio-isostatic responses to ice-sheet melting. Here, we reconstruct the postglacial relative sea-level changes along the Caribbean and Pacific coasts of northwestern South America by numerically solving the sea-level equation with two scenarios of mantle viscosity: global standard average and high viscosity. Our results with the standard model (applicable to the Pacific coast) agree with earlier studies by indicating a mid-Northgrippian high stand of ~2 m. The high-viscosity simulation (relevant to the Caribbean coast) shows that the transition from far- to intermediate-field influence of the Laurentide Ice Sheet occurs between Manzanillo del Mar and the Gulf of Morrosquillo. South of this location, the Colombian Caribbean coast has exhibited a still stand with a nearly constant Holocene relative sea level. By analyzing our simulations considering sea-level indicators, we argue that tectonics is more prominent than previously assumed, especially along the Caribbean coast. This influence prevents a simplified view of regional relative sea-level changes on the northwestern South American coast.
“…The Eastern Cordillera contains a Precambrian basement overlain by metasedimentary rocks of oceanic affinity deposited in the Early Paleozoic. The Central Cordillera is constituted by a crystalline basement including high-grade Proterozoic metamorphic rocks to the north (Cuadros et al, 2014), and a ~N-S distribution of plutonic rocks with zircon U-Pb crystallization ages ranging from the Paleozoic (Leal-Mejía et al, 2019;Rodríguez-García et al, 2019;Restrepo et al, 2023) to the Cenozoic, forming different continental magmatic arcs (Bustamante et al, 2016(Bustamante et al, , 2017bLeal-Mejía et al, 2019;Rodríguez-García et al, 2019) (Fig. 1).…”
With the imperative to diversify energy matrices and reduce dependence on fossil fuels, nations are actively exploring alternative sources of energy. In that sense, graphite, due to its role in lithium batteries, emerges as a pivotal component in the global energy transition. Governments, recognizing the strategic significance of certain minerals, compile lists of critical minerals to achieve energy autonomy. However, in the recent update of Colombia’s critical mineral list, noteworthy minerals such as lithium and graphite were overlooked.
Despite the widespread presence of graphite along the Central Cordillera of Colombia, potentially extending into the Real Cordillera in Ecuador, its importance has remained largely unnoticed for years. This manuscript underscores the critical need to comprehensively characterize graphite occurrences in the Andes of Colombia. The manifestations of graphite suggest its potential significance in the pursuit of cleaner energy sources. This study aims to draw attention to the overlooked role of graphite, urging a reevaluation of its inclusion in Colombia’s critical minerals list to enhance the nation’s strategic positioning in the global shift towards sustainable energy solutions.
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