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Resultats globals: 4 registres trobats en 0.02 segons.
Articles, 4 registres trobats
Articles 4 registres trobats  
1.
21 p, 3.7 MB Saponite-rich black shales and nontronite beds of the Permian Irati Formation : Sediment sources and thermal metamorphism (Paraná Basin, Brazil) / Dos Anjos, Camila Wense Dias (Universidade de Brasília. Instituto de Geociências) ; Meunier, Alain (Université de Poitiers) ; Guimarães, Edi Mendes (Universidade de Brasília. Instituto de Geociências) ; El Albani, Abderrazzak (Université de Poitiers)
Shales and claystones in the Permian Irati Formation consist of Al-rich or Fe-Mg clay minerals in its southern/central and northern parts, respectively. The constrasting compositions indicate particular geological and paleo-environmental conditions. [...]
2010 - 10.1346/CCMN.2010.0580503
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 606-626  
Registre complet -
2.
14 p, 2.1 MB An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil) / Simas, M. W. (Universidade Federal do Rio Grande do Sul (UFRGS). Instituto de Geociências) ; Guerra-Sommer, M. (Universidade Federal do Rio Grande do Sul (UFRGS). Universidade Federal do Rio Grande do Sul (UFRGS)) ; Mendonça, J. G. ; Cazzulo-Klepzig, Filho M. (Universidade Federal do Rio Grande do Sul (UFRGS). Instituto de Geociências) ; Formoso, M. L. L. (Universidade Federal do Rio Grande do Sul (UFRGS). Instituto de Geociências) ; Degani-Schmidt, I. (Universidade Federal do Rio Grande do Sul (UFRGS). Instituto de Geociências)
For the first time, the dispersed organic matter in the tonstein layer interbedded with a coal seam in the Faxinal Coalfield (Sakmarian, Southern Paraná Basin, Brazil) is characterized. The deposition of clusters of pollen grains was highly influenced by the intense ash fall process that probably occurred during seasonal dehiscence of reproductive structures. [...]
2013 - 10.1344/105.000001835
Geologica acta, Vol. 11, Núm. 1 (març 2013) , p. 45-57  
Registre complet - Creative Commons
3.
13 p, 668.4 KB A taphonomic model for the Mesosauride assemblage of the Irati Formation (Paraná Basin, Brazil) / Soares, M. B. (Universidade Federal do Rio Grande do Sul)
The Irati Formation (Permian, Paraná Basin, Brazil) is made up of a succession of black bituminous and nonbituminous shales and mudstones with interbedded carbonate layers, which record deposition in marine environments. [...]
2003 - 10.1344/105.000001621
Geologica acta, Vol. 1, Núm. 4 (2003) , p. 349-361  
Registre complet - Creative Commons
4.
18 p, 1.1 MB Palynology of the Permian San Miguel Formation (Western Paraná Basin, Paraguay): Gondwanan biostratigraphic correlations / Pérez Loinaze, V. S. (Museo Argentino de Ciencias Naturales "B. Rivadavia". División Paleobotánica) ; Césari, S. N. (Museo Argentino de Ciencias Naturales "B. Rivadavia". División Paleobotánica) ; López Gamundí, O. (Hess Corporation (Houston, Estats Units d'Amèrica)) ; Buatois, L. (University of Saskatchewan (Canadà). Department of Geological Sciences)
The palynological analysis of five samples from three levels in cores of the Mallorquín-1 well (Paraná Basin, eastern Paraguay) is presented here. The borehole penetrated the San Miguel Formation, the basal lithostratigraphic unit of the Independencia Group. [...]
2010 - 10.1344/105.000001584
Geologica acta, Vol. 8, Núm. 4 (Desembre 2010) , p. 483-493  
Registre complet - Creative Commons

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