Buscar
Mostrando ítems 611-620 de 1809
Sedimentary facies and ammonites relations between Arequipa and Tacna during Lower to Middle Jurassic
(Universitätsverlag GöttingenDE, 2009)
Arequipa basin has been studied by different authors, such as Jenks (1848), Wells (1953), Benavides (1962), Vargas (1970), Leon (1981) and Vicente (1981). These authors refer to the layers of the Chocolate Formation (Lower ...
Paleosols record dry and humid paleoenvironments during the Upper Pleistocene in the Brazilian Pantanal
(2022-05-01)
Information on Quaternary landscapes and paleoenvironmental changes in the interior of Brazil are scarce. One of such areas, particularly sensitive to these variations, is the modern tropical Pantanal wetland, whose alluvial ...
Aquatic macrophyte distribution in relation to water and sediment conditions in the Itaipu Reservoir, Brazil
(Kluwer Academic Publ, 1999-11-01)
Aquatic macrophyte community distribution along the eastern shoreline of the Itaipu Reservoir (one of the South America's largest impoundments) is described in relation to limnological and sedimentological factors. The ...
The sedimentary record of wet and dry eolian systems in the Cretaceous of Southeast Brazil: stratigraphic and paleogeographic significance
(Soc Brasileira Geologia, 2019-01-01)
Sedimentologic and stratigraphic studies of paleo-deserts from the Brazilian Cretaceous are of great potential to understand the paleoclimate and paleogeography of Gondwana during its final rifting stage. Herein, we describe ...
Diatomáceas do paleógeno do platô de São Paulo (dsdp leg 39, site 356)
(Universidade do Vale do Rio dos Sinos, 2011-11-11)
Diatoms are excellent biostratigraphic markers to Meso-Cenozoic Eras and are a very useful elements to paleoecologic and paleoceanographic studies. The present work is the study of the diatoms from the Paleogene interval ...
Proveniência, paleogeografia e sedimentologia dos depósitos do Grupo Itararé no extremo sul da Bacia do Paraná
(Universidade do Vale do Rio dos Sinos, 2019-08-24)
Fine-grained rhythmite is a recurrent sedimentary facies in glacially-influenced marine and lacustrine sequences throughout geological time. Paleoenvironmental interpretation of these ancient deposits has been a challenged ...
Paleoicnologia de depósitos turbidíticos: um estudo da formação Capdevila, Eoceno inferior, Cuba Ocidental
(Universidade do Vale do Rio dos Sinos, 2014-05-20)
Ichnological studies in Capdevila Formation (Los Palacios Basin, Lower Eocene) are scarce and there are few works in which the authors just identified the taxa of the trace fossils. The aims of this work are identify and ...
Evolution of an estuarine valley to barrier-lagoon system promoted by tidal prism change during a transgressive event (Lower Permian, Paraná Basin)
(Universidade do Vale do Rio dos Sinos, 2020-11-27)
In modern marine marginal environments, the coastal morphology directly influences the tidal and wave processes. In this paper we present an example of an ancient coastal zone where the change in coastal morphology controlled ...
Proveniência, paleogeografia e sedimentologia dos depósitos do Grupo Itararé no extremo sul da Bacia do Paraná
(Universidade do Vale do Rio dos Sinos, 2019-08-24)
Fine-grained rhythmite is a recurrent sedimentary facies in glacially-influenced marine and lacustrine sequences throughout geological time. Paleoenvironmental interpretation of these ancient deposits has been a challenged ...
Diatomáceas do paleógeno do platô de São Paulo (dsdp leg 39, site 356)
(Universidade do Vale do Rio dos Sinos, 2011-11-11)
Diatoms are excellent biostratigraphic markers to Meso-Cenozoic Eras and are a very useful elements to paleoecologic and paleoceanographic studies. The present work is the study of the diatoms from the Paleogene interval ...