Jurassic
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. Constraints from magnetotellurics on the geological structure across a seismic area associated with water wells in the Paraná basin, Brazil
ABSTRACT: The occurrence of earthquakes associated with the opening of groundwater wells is a very rare phenomenon. We present the results from a magnetotelluric profile of about 4 km-long that crosses a seismic zone near the town of Bebedouro, in the Northeastern part of the intra-cratonic Paraná basin, in Brazil. The seismic activity is thought to be caus
Braz. J. Geol.. Publicado em: 13/01/2020
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2. Direct analysis of vicariance in Neotropical mayflies (Ephemeroptera)
Abstract: The distribution of aquatic insects has been poorly explored in quantitative analyses aiming at the historical reconstruction of area relationships in the Neotropics. Ephemeroptera is an ancient group, characterized by its low vagility, and of high richness and endemicity in this region. Systematic knowledge of the group has enormously increased in
An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019
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3. Permineralized conifer-like leaves from the Jurassic of Patagonia (Argentina) and its paleoenvironmental implications
Abstract Abstract: Anatomically preserved conifer-like leaves from the Middle Jurassic La Matilde Formation at the Barda Blanca locality in the Gran Bajo de San Julián area, southern Patagonia are described here. Leaves are assigned to conifers based on the following foliar features: thick-walled epidermal cells, a sclerenchymatic hypodermis, resin canals a
An. Acad. Bras. Ciênc.. Publicado em: 06/05/2019
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4. Sedimentology and chemostratigraphy of a Valanginian carbonate succession from the Baja Guajira Basin, northern Colombia
ABSTRACT: The Kesima Member of the Palanz Formation constitutes the first record of Cretaceous marine sedimentation along the Baja Guajira Basin, northern Colombia. Sedimentologic and petrographic analyses suggest a deposition along a coral reef dominated rimmed carbonate platform. 87Sr/86Sr values between 0.707350 and 0.707400 suggest a Valanginian (136 - 1
Braz. J. Geol.. Publicado em: 2016-06
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5. Tunasniyoj, a dinosaur tracksite from the Jurassic-Cretaceous boundary of Bolivia
Neste estudo é relatado um conjunto magnificamente preservado de pistas de dinossauros representados por cinco táxons distintos, situado próximo à Vila de Icla, 100 quilômetros a sudeste do Sucre, Bolívia. Preservados em arenitos eólicos avermelhados do limite Jurássico-Cretáceo. Quatro formas geradoras foram identificadas na área, sendo três quad
Anais da Academia Brasileira de Ciências. Publicado em: 2011-03
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6. Estratigrafia química (COT, delta13C, delta18O) e nanofósseis calcários na passagem Pliensbaquiano-Toarciano no perfil de Peniche (Portugal): resultados preliminares
The marl-limestone succession that encompasses the Pliensbachian–Toarcian Stage Boundary (Lower Jurassic) and crops out at Peniche (Lusitanian Basin, Portugal), was chosen as one of the candidates for the establishment of Toarcian GSSP. Chemostratigraphy analyses, of the Upper Pliensbachian (spinatum Zone)-Lower Toarcian (levisoni p.p. Zone) portion, were
Publicado em: 2010
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7. On two pterosaur humeri from the Tendaguru beds (Upper Jurassic, Tanzania)
Fragmentos de pterossauros africanos do Jurássico são excepcionalmente raros e conhecidos apenas dos depósitos de Tendaguru, Jurássico Superior, Tanzânia. Este estudo descreve dois úmeros direitos de pterossauros de Tendaguru depositados na Universidade Humboldt de Berlim: espécimes MB.R. 2828 (réplica MN 6661-V) e MB.R. 2833 (réplicaMN 6666-V). MB.
Anais da Academia Brasileira de Ciências. Publicado em: 2009-12
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8. A ficção científica e o ensino de ciências: o imaginário como formador do real e do racional
Este artigo apresenta uma reflexão sobre a inserção da ficção científica no ensino de Ciências, no qual buscamos identificar como a ficção científica incorpora elementos na estrutura conceitual dos educandos partindo do pressuposto de que teria um papel de desencadeadora e/ou organizadora da aprendizagem. O filme "Jurassic Park" foi estudado como c
Ciência & Educação (Bauru). Publicado em: 2008
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9. Processos metalogenéticos em ambientes de arco magmático tipo andino, caso de estudo: mineralizações da região dos Andes Patagônicos setentrionais do Chile / Metallogenic processes in andean volcanic arc setting, study case: mineralizations in the Chilean North-Patagonion Andes
In the Patagonian Andes region between 41 and 44° S extensive and continuous plutonic rocks of the North-Patagonian Batholith north segment are exposed. During their evolution most of the granitic rocks were emplaced in metamorphic rocks and other parts were emplaced in Late Jurassic-Berriasan volcanic rocks, Early Cretaceous sedimentary and volcanic rocks,
Publicado em: 2008
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10. Compartimentação do relevo do hemigráben do Estado de Roraima
The sedimentary basin of the Tacutu is located in the state of Roraima, Brazil. It is an implanted distensive segment in the Mesozóic (upper Jurassic - lower Cretaceo). It is an half-graben incased in the Shield of the Guianas, prolongated in the northeast direction - southwestern, with about 300 km of length varying 30 the 50 width km, extending itself of
Publicado em: 2007
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11. EVOLUÇÃO TECTONOSSEDIMENTAR DA BACIA DOS PARECIS AMAZÔNIA
The Parecis basin is located in central-western Brazil, on the southwestern part of the Amazon craton, between the Rondônia and Guaporé fold belts. From west to east, the Parecis basin can be divided into three tectono-sedimentary domains: a tectonic low to the west, a central compartment characterized by a negative gravimetric anomaly, and a interior sag
Publicado em: 2007
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12. Avaliação das taxas de doses de radiação gama e modelagem cartografica das estatisticas de obitos por neoplasias na região central de Cuba / Evaluation of the gamma radiation dose rates and cartographic modeling of the death statistics by neoplasies in the central region of Cuba
This study developed in the central part of Cuba, attempted to evaluate a gamma radiation dose rate, exploring the airbome geophysical survey possibilities in order to obtain a radiogeochemical characterization and the geological - structural mapping of environment for an area of about 16.500 km2. Besides, to dispose through this research, of results that co
Publicado em: 2005