Zobrazeno 1 - 10
of 14
pro vyhledávání: '"R. I. F. Trindade"'
Publikováno v:
Journal of Micropalaeontology, Vol 42, Pp 83-93 (2023)
The generation of artifacts during sample preparation must be considered in paleobiological studies, particularly during the Ediacaran and Cambrian, since such artifacts can assume forms similar to those of cloudinids and other problematic taxa commo
Externí odkaz:
https://doaj.org/article/fd683d784a7841268395ea54434f3517
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 8, Pp n/a-n/a (2023)
Abstract Quantifying the contributions of distinct mineral populations in bulk magnetic experiments greatly enhances the analysis of environmental and rock magnetism studies. Here, we develop a new method of parametric unmixing of susceptibility comp
Externí odkaz:
https://doaj.org/article/de72a409e4ee4878ac829170c5b17f90
Autor:
C. G. Leandro, J. F. Savian, M. V. L. Kochhann, D. R. Franco, R. Coccioni, F. Frontalini, S. Gardin, L. Jovane, M. Figueiredo, L. R. Tedeschi, L. Janikian, R. P. Almeida, R. I. F. Trindade
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-12 (2022)
The Early Cretaceous Aptian stage represents an interval of major dramatic climate changes, but there is no consensus on its lower boundary age. Here, the authors present an astro-chronological framework that offers new age constraints on the onset a
Externí odkaz:
https://doaj.org/article/aa469fdcad7a42848f855a5798fb76c1
Autor:
A. d. S. Leite, S. Rousse, J.‐F. Léon, R. I. F. Trindade, S. Haoues‐Jouve, C. Carvallo, M. Dias‐Alves, A. Proietti, E. Nardin, M. Macouin
Publikováno v:
GeoHealth, Vol 6, Iss 9, Pp n/a-n/a (2022)
Abstract Children's exposure to air pollution affects both their health and learning skills. Fine and ultrafine particulate matter (PM2.5, PM1), notably issued from traffic sources in urban centers, belong to the most potential harmful health hazards
Externí odkaz:
https://doaj.org/article/6621bcfcf830484bb0171c01edbe22d9
Autor:
L. Maldanis, K. Hickman-Lewis, M. Verezhak, P. Gueriau, M. Guizar-Sicairos, P. Jaqueto, R. I. F. Trindade, A. L. Rossi, F. Berenguer, F. Westall, L. Bertrand, D. Galante
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
Abstract Precambrian cellular remains frequently have simple morphologies, micrometric dimensions and are poorly preserved, imposing severe analytical and interpretational challenges, especially for irrefutable attestations of biogenicity. The 1.88 G
Externí odkaz:
https://doaj.org/article/24924b0ea98945b798cacf2ed6ef2501
Autor:
L. Morais, T. R. Fairchild, B. T. Freitas, I. D. Rudnitzki, E. P. Silva, D. Lahr, A. C. Moreira, E. A. Abrahão Filho, J. M. Leme, R. I. F. Trindade
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
Acritarchs, a polyphyletic group of acid-resistant organic-walled microfossils, dominate the eukaryotic microfossil record in the Proterozoic (2500–541 Ma) yet exhibit significant reduction in diversity and size at the transition to the Phanerozoic
Externí odkaz:
https://doaj.org/article/c2c7111cae9d46cfbab1ffa461f8a283
Autor:
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
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 21, Iss 11, Pp n/a-n/a (2020)
Abstract Spinel is a ubiquitous mineral in mafic/ultramafic rocks. Spinel cores chemistry is extensively used as a petrogenetic proxy while their alteration phases, ferritchromite, and Cr‐magnetite, are used as metamorphic grade indicators. However
Externí odkaz:
https://doaj.org/article/f8a10876b9894639a24829848f5e2b96
Autor:
F. Hodel, M. Macouin, R. I. F. Trindade, A. Triantafyllou, J. Ganne, V. Chavagnac, J. Berger, M. Rospabé, C. Destrigneville, J. Carlut, N. Ennih, P. Agrinier
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Uncertainty regarding the evolution of the oxygen isotopic composition of seawater casts doubt on past temperature reconstructions. Here, the authors present a new, precise δ18O value for the Neoproterozoic, and propose that ocean temperatures on th
Externí odkaz:
https://doaj.org/article/0950a7b3e5114a5a9f209c9e68ebc889
Autor:
J. Urrutia-Fucugauchi, L. M. Alva Valdivia, R. I. F. Trindade, A. Goguitchaichvili, J. Morales, R. Cejudo Ruiz
Publikováno v:
Geofísica Internacional, Vol 48, Iss 2, Pp 243-252 (2009)
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 seven cooling units were pre-selected for paleointensity experiments based on their low viscosi
Externí odkaz:
https://doaj.org/article/2cc6ef4093724b15a55c4cba08f29fdd
Autor:
R. Cejudo Ruiz, A. Goguitchaichvili, J. Morales, R. I. F. Trindade, L. M. Alva Valdivia, J. Urrutia-Fucugauchi
Publikováno v:
Geofísica Internacional, Vol 48, Iss 2, Pp 243-252 (2009)
Se presentan los estudios de propiedades magnéticas y paleointensidades por el método de Thellier en los diques de 130.5 Ma de Ponta Grossa, sur de Brasil. Para este estudio se seleccionaron 29 muestras, correspondientes a siete unidades de enfriam
Externí odkaz:
https://doaj.org/article/249fb27b999943079036f54ec8553e74