Sandy Deposits
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Litter Dynamics in a Forest Dune at Restinga da Marambaia, RJ, Brazil
ABSTRACT Restingas are extremely degraded, tropical sandy ecosystems and are poorly studied in terms of nutrient cycling. The present study aimed to evaluate litter dynamics in a forest dune at Restinga da Marambaia, RJ. Litterfall was collected monthly using two parallel transects installed 200 m apart from each other with 15 litter traps (0.25 m2), over t
Floresta Ambient.. Publicado em: 29/03/2018
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2. Structure and floristic pattern of a coastal dunes in southeastern Brazil
The Brazilian shrublands area (restinga) is composed of marine coast vegetation on Quaternary sandy plains, where the species composition can vary depending on the surrounding ecosystems. The aims of this study were to describe the structure and floristic composition of a restinga near the community of Itaúnas, in the northern part of the state of Espírito
Acta Bot. Bras.. Publicado em: 2013-03
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3. Analise de facies e modelo paleodeposicional da plataforma siliciclastica ordoviciana da Pre-Cordilheira Argentina / Facies analisys and paleodepositional model of the ordovician siliciclastic shelf of the Argentine Precordillera
This work consists in the study of sedimentological and paleodepositional features of four Ordovician lithostratigraphic units of the Precordillera Argentina: Portezuelo del Tontal Formation (PTF), Sierra de La Invernada Formation (SIF), Gualcamayo Formation (GF) and Los Azules Formation (LAF). The PTF is represented by alternating fine- to very fine grained
Publicado em: 2009
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4. Relação solo-relevo-substrato geológico na planíce costeira de Bertioga (SP) / Soil-relief-geologic substract relationship on the coastal plain of Bertioga (SP)
Knowledge of the chronology, relief, geology and soils in sedimentary coastal environments is relevant for their interpretation, reconstitution and conservation. In Bertioga, São Paulo State Brazil, several sections of the Pleistocene and Holocene morphostratigraphic costal plain units are preserved in the landscape. This thesis seeks the perception of the
Publicado em: 2009
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5. Microclima e bioindicadores paleoclimáticos em paisagens com ocorrência de areais em São Francisco de Assis, RS, Brasil
A tese que fundamenta esta pesquisa centra-se na idéia de que as cactáceas encontradas na área de estudo são bioindicadoras de climas pretéritos. Suas características em escala micro são similares aos seus ambientes de origem ou, ao sofrerem transformações, apresentam condições para estabelecimento e proliferação nesses ambientes. Mais especific
Publicado em: 2009
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6. Sediment distribution model in marine shelf area : a cambrian example from the Sergipano Belt (Lagarto Formation, Estancia Domain, Sergipe) / Modelo de distribuição de sedimento em area de plataforma marinha : um exemplo do cambriano da faixa sergipana (Formação Lagarto, Dominio Estancia, Sergipe)
Coastal areas of wave-influenced tidal plains are not well known in recent and ancient depositional systems. The Lagarto Formation represents one of these mixed depositional systems influenced both by tide and wave activities. This work describes the sediments in this system, interprets the depositional processes and defines a distributional model of sedimen
Publicado em: 2008
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7. O QuaternÃrio do Parque Nacional Serra da Capivara, PiauÃ, Brasil: morfoestratigrafia, sedimentologia, geocronologia e paleoambientes
The Serra da Capivara National Park is internationally recognized because it houses the most important concentration of rock paintings and archeological sites in the American continent. Vestiges of human occupation are distributed in 1.000 archeological sites many times located in Quaternary sediments, with few researches realized until the moment. The objec
Publicado em: 2007
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8. Geoambientes, pedogênese e uso da terra no setor norte do Parque Nacional da Serra do Divisor, Acre / Geo-environments, pedogenesis and land use in north sector of the National Park of Serra do Divisor
The Serra do Divisor National Park , in the Upper Jurua River, west of the State of Acre, with 784.077 hectares, is covered by primary forest vegetation, with high biodiversity. In this study, we caracterized and mapped the geoenvironmental units and the land use of the northern sector of the Park (319.373 ha), and we also studied the pedogenetics aspects of
Publicado em: 2007
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9. Sedimentação mista carbonato-siliciclástico durante o albo-aptiano na porção emersa da bacia Sergipe-Alagoas
The Albian-Aptian mixed sediments, composed of carbonate and siliciclastic constituents, occur in the onshore portion of the Sergipe-Alagoas Basin, next to its current border. Outcrops are located 50 km to northwest from Aracaju and, for the greater part, in oil well areas. The interpretations now presented are based on outcrop description, georadar sections
Publicado em: 2006
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10. AplicaÃÃo de um modelo paramÃtrico para a estimativa do transporte de sedimentos arenosos na Bacia de Campos / Application of a parametric model to assess the sandy sediment transport in the Campos Basin
Studies about sediment transport processes that occur in the Campos Basin are of great importance, since they can contribute for example to improve the comprehension of how the sedimentary deposits, that are potential oil reservoirs, take form or to provide elements that can help to understand the changes in marine bed forms on areas where submarine pipeline
Publicado em: 2006
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11. "História ecológica da floresta de Araucária durante o Quaternário Tardio no setor sul da serra da Mantiqueira: análises sedimentológicas e palinológicas na região de Monte Verde (MG)" / "Ecological history of the Araucaria forest during the late Quaternary: sedimentological and palinological results from the Monte Verde region, Serra da Mantiqueira, Minas Gerais, Brazil"
Low annual average temperature (<18ºC), the localization in a zone of high altitude (>1500 m) and high floristic diversity, representative of the southern part of the Serra da Mantiqueira highlands, turn the Monte Verde region (city of Camanducaia, Southeast of the State of Minas Gerais), propitious for the inquiry of Late Quaternary climatic changes, the a
Publicado em: 2006
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12. SeqÃÃncias siluro-devoniana e eocarbonÃfera da Bacia do ParnaÃba, Brasil, como anÃlogos para a explotaÃÃo de hidrocarbonetos
The present study was applied to understanding the similar hydrocarbon reservoirs on the Silurian, Devonian and Early Carboniferous sequences of the ParnaÃba Basin. The exposure investigated are located in the central area in the Piauà state. These outcrops are geologicaly inserted in the southeastern border of the ParnaÃba Basin. Three outcrops constitui
Publicado em: 2005