The NW Amazonian Craton in Guainía and Vaupés departments, Colombia: Transition between orogenic to anorogenic environments during the Paleo-Mesoproterozoic

Bonilla, Amed; Cramer, Thomas; Grave, Johan De; Alessio, Brandon L.; Glorie, Stijn; Kroonenberg, Salomon

doi:10.1016/j.precamres.2021.106223

Cited by 11 publications

(13 citation statements)

References 34 publications

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“…The drivers of enhanced subaerial volcanic activity are still under debate. Because of their occurrence being mostly related to large-scale continental rifting and breakup of Columbia (Nuna) supercontinent (53,55), it could be related to interior superplume activities and/or encircling subduction systems (78). Nevertheless, our results emphasize that subaerial volcanism and its corresponding effect on weathering can break the longterm stasis of the mid-Proterozoic.…”

Section: Enhanced Nutrient Fluxes and Mpp Following The Subaerial Vol...mentioning

confidence: 71%

“…This duration exceeds the conventional (<1 to 5 Ma) and maximum (10 to 15 Ma) span associated with a single LIP event (49). Notably, volcanic activity during 1.40 to 1.39 Ga has also been reported from other cratons, including the South Laurentian, West Australian, North Australian, Amazonian, and South African (table S1) (50)(51)(52)(53)(54)(55). Despite uncertainties concerning the paleogeographic reconstruction, available evidence indicates that these cratons and the North China Craton were not adjacent to each other during 1.55 to 1.25 Ga (fig.…”

Section: Subaerial Volcanic Eruptions 1398 Ma Agomentioning

confidence: 79%

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Subaerial volcanism broke mid-Proterozoic environmental stasis

Zhang,

Wang,

Wang

et al. 2024

Sci. Adv.

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The mid-Proterozoic, spanning 1.8 to 0.8 billion years ago, is recognized as a phase of marine anoxia, low marine primary productivity (MPP), and constrained eukaryotic biodiversity. However, emerging evidence suggesting intermittent environmental disturbances and concurrent eukaryotic evolution challenges the notion of a stagnant Earth during this era. We present a study detailing volcanic activity and its consequential impact on terrestrial weathering and MPP, elucidated through the examination of 1.4-billion-year-old tropical offshore sediments. Our investigation, leveraging precise mercury (Hg) and lithium (Li) isotopic analyses, reveals the introduction of fresh rock substrates by local volcanism. This geological event initiated a transformative process, shifting the initial regolith-dominated condition in tropical lowland to a regime of enhanced chemical weathering and denudation efficiency. Notably, the heightened influx of nutrient-rich volcanic derivatives, especially phosphorus, spurred MPP rates and heightened organic carbon burial. These factors emerge as potential drivers in breaking the long-term static state of the mid-Proterozoic.

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Section: Enhanced Nutrient Fluxes and Mpp Following The Subaerial Vol...mentioning

confidence: 71%

Section: Subaerial Volcanic Eruptions 1398 Ma Agomentioning

confidence: 79%

Subaerial volcanism broke mid-Proterozoic environmental stasis

Zhang,

Wang,

Wang

et al. 2024

Sci. Adv.

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“…2). Bonilla et al (2021) presented concurring evidence for the evolution of the Rio Negro-Juruena Province. In Guainía, Colombia, ages between 1.85 and 1.72 Ga were associated to metamorphic and igneous rocks belonging to the Mitu Complex.…”

mentioning

confidence: 70%

“…These ages were interpreted by these authors as a result of the Statherian collisional and orogenic events (i.e., the Querari Orogeny). Furthermore, Bonilla et al (2021) identified additional orogeny-related rocks ranging 1.60 to 1.50 Ga old. Such results can be related to the Atapabo Belt and Vaupes Belt of Cordani et al (2016), respectively.…”

mentioning

confidence: 99%

Genesis and Evolution of Pegmatites in Eastern Colombia: Insights from Mineral Chemistry

Mora-Galindo,

Molano Mendoza,

Morales Peña

2023

Earth sci. res. j.

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Pegmatites and granitic intrusives from eastern Colombia, belonging to the Guainía department, were studied to determine the generating magma type, as well as to assess the degree of magmatic fractionation and its relationship with the presence of Nb-Ta-bearing minerals (strategic minerals). To that end, 31 rock samples were studied; EPMA electronic microprobe analyses were conducted on apatite, biotite, garnet, microcline, muscovite, and tourmaline. The results from biotite, garnet, and tourmaline suggest that these rocks originated from a Fe-rich peraluminous melt. Moreover, content variation of Ba in microcline, Na in muscovite, Fe-Mg in biotite, and Mn-Sr in apatite, allowed the proposal of a magmatic evolutionary line for these rocks. Nb-Ta-bearing samples were present in the most fractionated rocks where tourmaline and garnet occurred, and thus, were proposed as possible indicators of strategic minerals.

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“…These potential source areas comprise basement rocks for which documented magmatic and metamorphic zircon U-Pb ages vary from ~1500 to ~1100 Ma, and from ~1000 to 900 Ma, respectively (Ibañez-Mejia & Cordani, 2020;Ibañez-Mejia et al, 2015). Older Paleoproterozoic detrital ages could represent the contribution of crystalline and/or recycled strata of inboard domains of the Amazonian craton (e.g., Bonilla et al, 2021).…”

Section: Ne W Provenan Ce Cons Tr Aintsmentioning

confidence: 99%

Sediment provenance signal of the discontinuous retroarc topography in the northern Andes during the Early Cretaceous

León,

Jiménez‐Rodríguez,

Piraquive

et al. 2023

Terra Nova

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A large dataset of detrital zircon U–Pb ages (N = 5940) of Aptian‐Albian strata of the Colombian‐Ecuadorian retroarc region suggests that these rocks were sourced from Proterozoic cratonic and Permian–Triassic to Cretaceous rocks of the Andean proto‐Cordilleras. The nonconformity between Aptian‐Albian strata and Proterozoic rocks of the Garzón Massif indicates the existence of positive relief in this region. Topographic highs could have caused local basin compartmentalization and the prevalence of a localized provenance of coeval strata. Areas of positive relief were seemingly exposed to intense chemical weathering as suggested by the high Chemical Index of Alteration values, and low Rb/Sr and SiO2/Al2O3 ratios of analysed strata. Our results highlight the value of provenance analysis to study the ancient topography of retroarc systems and open the avenue for further research on the role of extensional tectonics in the topographic and basin evolution in the Andes.

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The NW Amazonian Craton in Guainía and Vaupés departments, Colombia: Transition between orogenic to anorogenic environments during the Paleo-Mesoproterozoic

Cited by 11 publications

References 34 publications

Subaerial volcanism broke mid-Proterozoic environmental stasis

Subaerial volcanism broke mid-Proterozoic environmental stasis

Genesis and Evolution of Pegmatites in Eastern Colombia: Insights from Mineral Chemistry

Sediment provenance signal of the discontinuous retroarc topography in the northern Andes during the Early Cretaceous

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