New U–Pb Baddeleyite Ages of Mafic Dyke Swarms of the West African and Amazonian Cratons: Implication for Their Configuration in Supercontinents Through Time

Baratoux, Lenka; Ernst, Richard E.; Roever, E.W.F. de; Jessell, Mark; Kamo, Sandra L.; Naba, Séta; Perrouty, Stéphane; Metelka, Václav; Yatte, D.; Grenholm, Mikael; Diallo, Dinna Pathé; Ndiaye, P.; Dioh, Edmond; Cournède, C.; Benoît, Mathieu; Baratoux, D.; Youbi, Nasrrddine; Rousse, Sonia; Bendaoud, Abderrahmane

doi:10.1007/978-981-13-1666-1_7

Cited by 28 publications

(27 citation statements)

References 118 publications

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“…1,770 Ma Harts Range mafic volcanics and sills (Pirajno & Hoatson, 2012;Gibson et al, 2018). Other LIPs or mafic magmatism events during this period include the 1,755 Ma Timpton LIP in Siberia (Gladkochub et al, 2010;Ernst et al, 2016a), the Avanavero dolerite sill and dyke in Amazonia (Reis et al, 2013), the 1,798 ± 4 Ma to 1,791 ± 7 Ma (baddeleyite U-Pb ages) Para de Minas dolerite dyke in São Francisco (Cederberg et al, 2016), the Tagragra of Akka and Libiri dolerite dykes in Western Africa (Youbi et al, 2013;Baratoux et al, 2019), the 1,754 ± 16 Ma (zircon U-Pb age) dolerite dykes from Vestfold Hills in East Antarctica (Lanyon et al, 1993), the ca. 1,790 Ma Pebbair dolerite dykes in India (Söderlund et al, 2019), and Florida (Uruguayan) mafic dykes in Rio de la Plata (Halls et al, 2001;Teixeira et al, 2013).…”

Section: The 1790-1750 Ma Lipsmentioning

confidence: 94%

“…LIPs or major mafic intraplate magmatic events around 1,580 Ma include the Värmland and Breven-Hallefors dolerite dykes in Baltica with baddeleyite U-Pb ages of 1,595 ± 3 Ma to 1,569 ± 3 Ma (Söderlund et al, 2005;Ernst et al, 2008), the Western Channel intrusive breccias, dolerite sills, bimodal volcanics, and granites in Laurentia (Ernst et al, 2008;Ernst & Bleeker, 2010), the Gawler Range silicic LIP consists of dacitic, rhyodacitic, and rhyolitic ignimbrite and basaltic lavas and interlayered ignimbrites, and granites in Southern Australia (Allen et al, 2008;Pirajno & Hoatson, 2012;Huang et al, 2016), the ca. 1,575 Ma (baddeleyite U-Pb age) Korsimoro dolerite dykes in Western Africa (Baratoux et al, 2019) and the 1,589 ± 3 Ma to 1,588 ± 3 Ma (baddeleyite U-Pb ages) Tandil mafic dykes in Rio de la Plata (Teixeira et al, 2013) (Appendix Table 20.A1).…”

Section: The Ca 1580 Ma Lipsmentioning

confidence: 99%

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Large Igneous Provinces (LIPs) and Anoxia Events in “The Boring Billion”

Zhang

Ernst

Pei

et al. 2021

Geophysical Monograph Series

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Recent results on ca. 1,380 Ma LIPs and black shales indicate a temporal link between LIPs and black shales and suggest a potential way for using coeval LIPs and black shales as natural markers for boundaries in the Mesoproterozoic timescale. In this chapter, we provide a brief review of LIPs and black shales during "the Boring Billion" in different cratons. The results show that in addition to the ca. 1,380 Ma LIP activity that is coeval with black shales, other major LIPs during this period can preliminarily be divided into several stages and are likely/possibly contemporaneous with black shales, especially the 1,650-1,620 Ma and ca. 1,100 Ma LIPs. Our results demonstrate that the global-scale LIPs and black shales in the Boring Billion can potentially be used as natural markers for subdivisions of the Proterozoic timescale. The results also suggest that, while the Boring Billion was characterized by suboxic or mildly oxygenated marine basins, it was interrupted by several OAEs that are partly caused by the environmental impact of LIPs. Preliminarily proposed correlation of LIPs and black shales provide a new way to explain the fluctuating evolution of atmosphere, life, and marine basins during the Boring Billion as identified by many recent studies.

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Section: The 1790-1750 Ma Lipsmentioning

confidence: 94%

Section: The Ca 1580 Ma Lipsmentioning

confidence: 99%

Large Igneous Provinces (LIPs) and Anoxia Events in “The Boring Billion”

Zhang

Ernst

Pei

et al. 2021

Geophysical Monograph Series

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“…The dikes oriented N–S have an age of 867 ± 16 Ma and the family oriented NE–SW has an age of 915 ± 8 Ma (Baratoux et al. ). In the immediate environs of the crater, lithology is dominated by greywacke, sandstone/quartzitic rocks, and minor mica schist.…”

Section: Geological Background and K Th U Concentrationsmentioning

confidence: 99%

Bosumtwi impact structure, Ghana: Evidence for fluidized emplacement of the ejecta

Baratoux

Niang

Reimold

et al. 2019

Meteorit & Planetary Scien

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The about 10.5 km diameter Bosumtwi impact crater is one of the youngest large impact structures on Earth. The crater rim is readily noticed on topographic maps or in satellite imagery. It defines a circular basin filled by water (Lake Bosumtwi) and lacustrine sediments. The morphology of this impact structure is also characterized by a circular plateau extending beyond the rim and up to 9–10 km from the center of the crater (about 2 crater radii). This feature comprises a shallow ring depression, also described as an annular moat, and a subdued circular ridge at its outer edge. The origin of this outermost feature could so far not be elucidated based on remote sensing data only. Our approach combines detailed topographic analysis, including roughness mapping, with airborne radiometric surveys (mapping near‐surface K, Th, U concentrations) and field observations. This provides evidence that the moat and outer ring are features inherited from the impact event and represent the partially eroded ejecta layer of the Bosumtwi impact structure. The characteristics of the outer ridge indicate that ejecta emplacement was not purely ballistic but requires ejecta fluidization and surface flow. The setting of Bosumtwi ejecta can therefore be considered as a terrestrial analog for rampart craters, which are common on Mars and Venus, and also found on icy bodies of the outer solar system (e.g., Ganymede, Europa, Dione, Tethys, and Charon). Future studies at Bosumtwi may therefore help to elucidate the mechanism of formation of rampart craters.

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“…ID-TIMS U-Pb age has been obtained on baddeleyite for the NS Libiri dyke swarm from Leo Man craton (Niger), yielding an age of ca. 1790 Ma (Baratoux et al, 2018).…”

Section: Ga Hart-carson Lip/plumementioning

confidence: 99%

“…The ca. 1.75 Ga Cleaver -Hadley Bay -Nueltin dykes and sills (and felsic magmatism) of the Kivalliq suite from Laurentia (Ernst et al, 2013;Peterson et al, 2015), along with the 1.75 Ga Tagragra of Akka of the Anti Atlas Inliers of West Africa (Youbi et al, 2013) and 1.76 Ga Kédougou dykes from southern West Africa craton (Baratoux et al, 2018), the 1.76 Ga Subbottsy-Nosachev and Pugachevka-Fedorovka dykes and mafic intrusions from Sarmatia (the SW segment of Baltica) (Bogdanova et al, 2013), the 1.76 Ga Newer Dolerites from the Singhbhum craton of India (Shankar et al, 2014), the 1.75 Ga Vestfold Hills-3 dykes from East-Antarctica (Ernst et al, 2013) and the 1.76 Ga Januária dykes (this study) from São Francisco portion of the Sao Francisco-Congo craton, could be all considered as fragmented portions of the 1.76−1.75 Ga Timpton LIP (Fig. 3a).…”

Section: Ga Hart-carson Lip/plumementioning

confidence: 99%

Fragments of 1.79-1.75 Ga Large Igneous Provinces in reconstructing Columbia (Nuna): a Statherian supercontinent-superplume coupling?

Chaves¹,

Rezende²

2019

Episodes

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Supported on available paleomagnetic data, a new Columbia (Nuna) supercontinent reconstruction is proposed based on matching U-Pb-dated 1.79-1.75 Ga Large Igneous Province (LIP) mafic unit fragments and particularly on linking their dykes into radiating systems. Information from the literature is augmented with the herein dated 1762 Ma (U-Pb) Januária dyke swarm from the São Francisco Craton (Brazil). In this reconstruction, three major LIPs would be restored. The first one (1.79 Ga Hart-Carson LIP), would consist of the Hart sills and Carson volcanics, and the Pebbair mafic dyke swarm. The second one (1.79-1.78 Ga Avanavero-Xiong'er LIP), would be composed of Avanavero sills and dykes, Taihang and Xiong'er dykes along with volcanics, Pará de Minas-1 dykes, Uruguayan/Florida dykes, Tomashgorod-Belokorovichi dykes and related intrusives, Oskarshamn dykes, and Libiri dykes. The third one (1.76-1.75 Ga Timpton LIP), would comprise the Timpton radiating swarm, Newer dolerites, Januária dykes, Kédougou dykes, Tagragra of Akka dykes, Vestfold Hills-3 dykes, Kivalliq suite, Subbottsy-Nosachev dykes and intrusives, and Pugachevka-Fedorovka dykes and intrusives. Additionally, it is suggested that the model of supercontinent-superplume coupling (previously applied to Rodinia and Pangea supercontinents) represents a possible geodynamic framework for Columbia (Nuna) during the beginning of the Statherian Period.

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New U–Pb Baddeleyite Ages of Mafic Dyke Swarms of the West African and Amazonian Cratons: Implication for Their Configuration in Supercontinents Through Time

Cited by 28 publications

References 118 publications

Large Igneous Provinces (LIPs) and Anoxia Events in “The Boring Billion”

Large Igneous Provinces (LIPs) and Anoxia Events in “The Boring Billion”

Bosumtwi impact structure, Ghana: Evidence for fluidized emplacement of the ejecta

Fragments of 1.79-1.75 Ga Large Igneous Provinces in reconstructing Columbia (Nuna): a Statherian supercontinent-superplume coupling?

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