Search Results - "Trindade, R.I.F."
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Unusual massive magnetite veins and highly altered Cr-spinels as relics of a Cl-rich acidic hydrothermal event in Neoproterozoic serpentinites (Bou Azzer ophiolite, Anti-Atlas, Morocco)
Published in Precambrian research (01-10-2017)“…[Display omitted] •Bou Azzer ophiolite was studied using rock magnetism, petrography and geochemistry.•Unique massive magnetite veins result from iron leaching…”
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Shaking a methane fizz: Seismicity from the Araguainha impact event and the Permian–Triassic global carbon isotope record
Published in Palaeogeography, palaeoclimatology, palaeoecology (01-10-2013)“…The Late Permian and Early Triassic periods are marked by large fluctuations in the carbon isotope record, but the source(s) of the disturbance to the global…”
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Geochronological constraints on the age of a Permo–Triassic impact event: U–Pb and 40Ar/39Ar results for the 40km Araguainha structure of central Brazil
Published in Geochimica et cosmochimica acta (01-06-2012)“…Impact cratering has been a fundamental geological process in Earth history with major ramifications for the biosphere. The complexity of shocked and melted…”
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A multilayered water column in the Ediacaran Yangtze platform? Insights from carbonate and organic matter paired δ13C
Published in Earth and planetary science letters (30-10-2009)Get full text
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Simultaneous remagnetization and U–Pb isotope resetting in Neoproterozoic carbonates of the São Francisco craton, Brazil
Published in Precambrian research (01-02-2000)“…The southern part of the Neoproterozoic São Francisco basin, in Minas Gerais State, Brazil, can be divided into three structural domains: (a) the central part…”
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Paleomagnetism of the Ediacaran Avellaneda Formation (Argentina), part I: Paleogeography of the Río de la Plata craton at the dawn of Gondwana
Published in Precambrian research (01-12-2022)“…•Two new paleomagnetic poles were obtained from late Ediacaran formations in the Río de la Plata Craton.•Rock magnetic data indicates that magnetic remanence…”
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The Ediacaran apparent polar wander path of the Río de la Plata craton revisited: Paleogeographic implications
Published in Precambrian research (01-10-2023)“…•An alternative Ediacaran APWP for the Río de la Plata craton was presented.•A set of global paleogeographic reconstructions during the Ediacaran were…”
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Paleomagnetism of the Ediacaran Avellaneda Formation (Argentina), Part II: Magnetic and chemical stratigraphy constraints on the onset of the Shuram carbon excursion
Published in Precambrian research (01-06-2023)“…•A magnetic reversal stratigraphy is tied to the onset Shuram Excursion.•Magnetostratigraphy and carbon isotopes can be used to correlate Ediacaran…”
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Constraining the Cambrian drift of Gondwana with new paleomagnetic data from post-collisional plutons of the Araçuaí orogen, SE Brazil
Published in Precambrian research (01-07-2021)“…[Display omitted] •New thermal diffusion model demonstrates the primary thermoremanent magnetization.•New paleomagnetic pole corresponds to the late Cambrian…”
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New paleomagnetic data from the sedimentary cover of the Tandilia System: Further geodynamic or geomagnetic complexities in the Late Ediacaran
Published in Gondwana research (01-08-2024)“…[Display omitted] •New paleomagnetic data from Ediacaran sediments of the Rio de la Plata Craton.•Two paleomagnetic poles, far-located from each other,…”
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The Moroccan Anti-Atlas ophiolites: Timing and melting processes in an intra-oceanic arc-back-arc environment
Published in Gondwana research (01-10-2020)“…The Moroccan Anti-Atlas orogenic belt encloses several Precambrian inliers comprising two major Neoproterozoic ophiolitic complexes: the Sirwa and Bou Azzer…”
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Detrital zircon ages and geochronological constraints on the Neoproterozoic Puga diamictites and associated BIFs in the southern Paraguay Belt, Brazil
Published in Gondwana research (01-04-2013)“…The Paraguay belt comprises a thick sedimentary succession deposited on the southwestern border of the Amazonian Craton and the Rio Apa Block. The base of the…”
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Revisiting the paleomagnetism of the Neoarchean Uauá mafic dyke swarm, Brazil: Implications for Archean supercratons
Published in Precambrian research (01-08-2019)“…•Characteristic remanence recorded by the Uauá tholeiitic dykes, Brazil, is primary.•A new ∼2.62 Ga paleomagnetic pole for the northern São Francisco craton is…”
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U-Pb geochronology of a reversely zoned pluton: Records of pre-to-post collisional magmatism of the Araçuaí belt (SE-Brazil)?
Published in Journal of South American earth sciences (01-11-2022)“…Post-collisional reversely zoned plutons occurring in the Araçuaí belt frequently show basic cores enveloped by felsic rocks, with intense magma…”
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Imaging the roots of a post-collisional pluton: Implications for the voluminous Cambrian magmatism in the Araçuaí orogen (Brazil)
Published in Tectonophysics (20-12-2021)“…The Cambrian Santa Angélica intrusive complex (SAIC - SE, Brazil), is composed of two lobes with concentric fabric and bull's eyes shapes, each lobe containing…”
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Neoproterozoic glacial deposits from the Araçuaí orogen, Brazil: Age, provenance and correlations with the São Francisco craton and West Congo belt
Published in Gondwana research (01-03-2012)“…Glacigenic diamictite successions of the Macaúbas Group are widespread in the western domain of the Araçuaí orogen, east of the São Francisco craton (Brazil)…”
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Diverse vase-shaped microfossils within a Cryogenian glacial setting in the Urucum Formation (Brazil)
Published in Precambrian research (01-12-2021)“…•The biostratigraphic range of VSMs must be extended to the Cryogenian.•VSMs thrived in a marginal environment related to the Marinoan global glaciation.•VSMs…”
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New volcanological, 40Ar/39Ar dating and paleomagnetic record from Trindade Island and stratigraphic implications
Published in Quaternary geochronology (01-04-2024)“…Unrevealing the stratigraphy of volcanic systems is fundamental to understanding their eruptive history and requires a multiproxy approach for the accurate…”
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Paleogeography of the Congo/São Francisco craton at 1.5Ga: Expanding the core of Nuna supercontinent
Published in Precambrian research (01-11-2016)“…•New Mesoproterozoic paleomagnetic data for Congo/São Francisco craton.•Key 1.5Ga paleomagnetic pole.•New reconstruction of the extended core of Nuna…”
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A Neoproterozoic hyper-extended margin associated with Rodinia's demise and Gondwana's build-up: The Araguaia Belt, central Brazil
Published in Gondwana research (01-02-2019)“…The Araguaia Belt encloses a poorly constrained Pan-African (Brasiliano Cycle) continental suture marked by a series of (~750 Ma) ophiolitic units which, when…”
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