Search Results - "R. I. F. Trindade"

Astronomical tuning of the Aptian stage and its implications for age recalibrations and paleoclimatic events by Leandro, C. G., Savian, J. F., Kochhann, M. V. L., Franco, D. R., Coccioni, R., Frontalini, F., Gardin, S., Jovane, L., Figueiredo, M., Tedeschi, L. R., Janikian, L., Almeida, R. P., Trindade, R. I. F.

“…The Aptian was characterized by dramatic tectonic, oceanographic, climatic and biotic changes and its record is punctuated by Oceanic Anoxic Events (OAEs). The…”
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Nanoscale 3D quantitative imaging of 1.88 Ga Gunflint microfossils reveals novel insights into taphonomic and biogenic characters by Maldanis, L., Hickman-Lewis, K., Verezhak, M., Gueriau, P., Guizar-Sicairos, M., Jaqueto, P., Trindade, R. I. F., Rossi, A. L., Berenguer, F., Westall, F., Bertrand, L., Galante, D.

“…Precambrian cellular remains frequently have simple morphologies, micrometric dimensions and are poorly preserved, imposing severe analytical and…”
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A carbon isotope challenge to the snowball Earth by Sansjofre, P., Ader, M., Trindade, R. I. F., Elie, M., Lyons, J., Cartigny, P., Nogueira, A. C. R.

“…Going soft on a snowball Earth The snowball Earth hypothesis contends that most of the planet was covered with thick ice for millions of years, about…”
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Unmixing of Magnetic Hysteresis Loops Through a Modified Gamma‐Cauchy Exponential Model by Bellon, U. D., Trindade, R. I. F., Williams, W.

“…Quantifying the contributions of distinct mineral populations in bulk magnetic experiments greatly enhances the analysis of environmental and rock magnetism…”
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Fossil black smoker yields oxygen isotopic composition of Neoproterozoic seawater by Hodel, F., Macouin, M., Trindade, R. I. F., Triantafyllou, A., Ganne, J., Chavagnac, V., Berger, J., Rospabé, M., Destrigneville, C., Carlut, J., Ennih, N., Agrinier, P.

“…The evolution of the seawater oxygen isotopic composition (δ 18 O) through geological time remains controversial. Yet, the past δ 18 O seawater is key to…”
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Magnetic Properties of Ferritchromite and Cr‐Magnetite and Monitoring of Cr‐Spinels Alteration in Ultramafic and Mafic Rocks by F. Hodel, M. Macouin, R. I. F. Trindade, J. F. D. F. Araujo, M. Respaud, J. F. Meunier, L. Cassayre, S. Rousse, L. Drigo, J. Schorne‐Pinto

“…Abstract Spinel is a ubiquitous mineral in mafic/ultramafic rocks. Spinel cores chemistry is extensively used as a petrogenetic proxy while their alteration…”
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Barking up the Right Tree: Using Tree Bark to Track Airborne Particles in School Environment and Link Science to Society by Leite, A. d. S., Rousse, S., Léon, J.‐F., Trindade, R. I. F., Haoues‐Jouve, S., Carvallo, C., Dias‐Alves, M., Proietti, A., Nardin, E., Macouin, M.

“…Children's exposure to air pollution affects both their health and learning skills. Fine and ultrafine particulate matter (PM2.5, PM1), notably issued from…”
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Remagnetization in bituminous limestones of the Neoproterozoic Araras Group (Amazon craton): Hydrocarbon maturation, burial diagenesis, or both? by Font, E., Trindade, R. I. F., Nédélec, A.

“…Neoproterozoic carbonates of the Araras Group exhibit two distinct magnetic components across the same carbonate succession in a cross‐section between the…”
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Magnetic Fabric and Geochronology of a Cambrian “Isotropic” Pluton in the Neoproterozoic Araçuaí Orogen by Temporim, F. A., Trindade, R. I. F., Tohver, E., Soares, C. C., Gouvêa, L. P., Egydio‐Silva, M., Amaral, C. A. D., Souza, G. F.

“…The Araçuaí Orogen (AO) has been interpreted as a Neoproterozoic example of a large, “hot” orogen, based on a broad zone (250 km) of midcrustal metamorphic…”
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Doushantuo-Pertatataka—Like Acritarchs From the Late Ediacaran Bocaina Formation (Corumbá Group, Brazil) by Morais, L., Fairchild, T. R., Freitas, B. T., Rudnitzki, I. D., Silva, E. P., Lahr, D., Moreira, A. C., Abrahão Filho, E. A., Leme, J. M., Trindade, R. I. F.

“…Acritarchs, a polyphyletic group of acid-resistant organic-walled microfossils, dominate the eukaryotic microfossil record in the Proterozoic (2500–541 Ma) yet…”
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Absolute Thellier paleointensities from Ponta Grossa dikes (southern Brazil) and the early Cretaceous geomagnetic field strength by J. Urrutia-Fucugauchi, L. M. Alva Valdivia, R. I. F. Trindade, A. Goguitchaichvili, J. Morales, R. Cejudo Ruiz

“…We report a detailed rock magnetic and Thellier paleointensity study from ~ 130.5 Ma Ponta Grossa Dike Swarms in Southern Brazil. Twenty-nine samples from…”
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Chemostratigraphy of the Neoproterozoic Mirassol d'Oeste cap dolostones (Mato Grosso, Brazil): An alternative model for Marinoan cap dolostone formation by Font, E., Nédélec, A., Trindade, R.I.F., Macouin, M., Charrière, A.

“…We have conducted a detailed study of the Neoproterozoic Mirassol d'Oeste cap dolostones that overlay the glacial diamictites of the Puga Formation (∼ 635 Ma,…”
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Low-latitude and multiple geomagnetic reversals in the Neoproterozoic Puga cap carbonate, Amazon craton by Trindade, R. I. F., Font, E., D'Agrella-Filho, M. S., Nogueira, A. C. R., Riccomini, C.

“…Palaeomagnetic study of the carbonates that ubiquitously cap glacial deposits may constrain the latitudinal extent of Neoproterozoic glaciations and the…”
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A palaeomagnetic and 40Ar/39Ar study of late precambrian sills in the SW part of the Amazonian craton: Amazonia in the Rodinia reconstruction by Elming, S.-Å., D'Agrella-Filho, M. S., Page, L. M., Tohver, E., Trindade, R. I. F., Pacca, I. I. G., Geraldes, M. C., Teixeira, W.

“…A new key palaeomagnetic pole (Plat. = 64.3°S, Plon. = 271.0°E, N = 14, A95 = 9.2°; Q = 5) is calculated from a primary magnetization isolated in early…”
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Detrital remanent magnetization in haematite-bearing Neoproterozoic Puga cap dolostone, Amazon craton: a rock magnetic and SEM study by Font, E., Trindade, R. I. F., Nédélec, A.

“…Neoproterozoic cap dolostones of the Araras Group (Mato Grosso, Brazil), deposited on top of glacial diamictites (Puga Formation, ∼630 Ma), yielded a dual…”
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Structural evolution of the 40 km wide Araguainha impact structure, central Brazil by LANA, C., FILHO, C. R. SOUZA, MARANGONI, Y. R., YOKOYAMA, E., TRINDADE, R. I. F., TOHVER, E., REIMOLD, W. U.

“…— The 40 km wide Araguainha structure in central Brazil is a shallowly eroded impact crater that presents unique insights into the final stages of complex…”
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AMS and grain shape fabric of the late Palaeozoic diamictites of the southeastern Parana Basin, Brazil by Archanjo, C. J, Silva, M. G, Castro, J. C, Launeau, P, Trindade, R. I. F, Macedo, J. W. P

“…Diamictites interbedded with marine shales and turbidites onlap the eastern border of the Paraná Basin (Southern Brazil). These poorly sorted sediments were…”
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Thermally enhanced mimetic fabric of magnetite in a biotite granite by Trindade, R. I. F., Mintsa Mi Nguema, T., Bouchez, J. L.

“…The thermally induced growth of mimetic magnetite after biotite is here demonstrated by the equivalence of anisotropies of magnetic susceptibility (AMS) and…”
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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) by Hodel, F., Macouin, M., Triantafyllou, A., Carlut, J., Berger, J., Rousse, S., Ennih, N., Trindade, R.I.F.

“…[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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Paleomagnetism of the Ediacaran Avellaneda Formation (Argentina), part I: Paleogeography of the Río de la Plata craton at the dawn of Gondwana by Franceschinis, P.R., Afonso, J.W., Arrouy, M.J., Gómez-Peral, L.E., Poiré, D., Trindade, R.I.F., Rapalini, A.E.

“…•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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