(U-Th)/He Thermochronology and Zircon Radiation Damage in the South American Passive Margin: Thermal Overprint of the Paraná LIP?

Tectonics ◽  
2018 ◽  
Vol 37 (10) ◽  
pp. 4068-4085 ◽  
Author(s):  
Mathias Hueck ◽  
István Dunkl ◽  
Beatrix Heller ◽  
Miguel Angelo Stipp Basei ◽  
Siegfried Siegesmund
Keyword(s):  
Radiation Damage ◽  
Passive Margin ◽  
South American ◽  
The South ◽  
Thermal Overprint

Neotectonics in the South American passive margin: Evidence of Late Quaternary uplifting in the northern Paraiba Basin (NE Brazil)

Geomorphology ◽  
2019 ◽  
Vol 325 ◽  
pp. 1-16 ◽  
Author(s):  
Fabio Corrêa Alves ◽  
Dilce de Fátima Rossetti ◽  
Márcio de Morisson Valeriano ◽  
Clódis de Oliveira Andrades Filho
Keyword(s):  
Late Quaternary ◽  
Passive Margin ◽  
South American ◽  
The South

scholarly journals Grandes capturas fluviais no Brasil: síntese das novas descobertas

2019 ◽  
pp. 23-31
Author(s):  
André Augusto Rodrigues Salgado ◽  
Luís Felipe Soares Cherem ◽  
Michael Vinícius De Sordi
Keyword(s):  
River Basins ◽  
Passive Margin ◽  
South American ◽  
Drainage Network ◽  
The South ◽  
Base Level ◽  
River Capture ◽  
Determining Factors ◽  
Major River

Capturas fluviais foram pouco investigadas no Brasil e apenas recentemente essa situação se alterou e sua ocorrência e feições correlatas foram sistematicamente estudadas para as grandes bacias fluviais não Amazônicas. Esse artigo sintetiza os principais resultados obtidos nos últimos cinco anos e apresenta a diversidade de magnitude e morfológica em seis capturas fluviais ao longo de quatro divisores entre as principais bacias hidrográficas do Brasil. Os resultados indicam que o nível de base, seguido da litoestrutura e da tectônica, constituem os fatores determinantes para ocorrência desses processos. Indicam ainda que as bacias hidrográficas atlânticas estão pirateando áreas das ditas continentais – Paraná e São Francisco – e que essa pirataria acelera o recuo erosivo do escarpamento da margem passiva sul-americana. Por fim, determinaram que as capturas causam a dissecação da rede de drenagem capturada, invertem o fluxo dos canais logo a jusante e, por fim, promovem o rebaixamento geral do relevo pirateado. Large fluvial captures in Brazil: synthesis of new discoveriesRiver captures have barely been studied in Brazil, and only recently the process and correlated features have been systematically studied for non-Amazonian major river basins. This paper synthesizes the main results obtained for the last five years and presents the diversity in magnitude and morphology of six river captures along the four divider of Brazilian-major river basins. The results indicate that the base level, followed by the lithostructure and tectonics, are the determining factors for the occurrence of these processes. They also indicate that the Atlantic basins are pirating areas of the continental ones - Paraná and São Francisco - and that this piracy accelerates the erosive retreat of the South American passive margin escarpment. Finally, they determined that the captures cause the dissection of the drainage network, invert the flow of the channels shortly downstream, and finally, promote the general lowering of the pirated relief. Keywords: River capture, Brazil, Major Basin Dividers, Fluvial Channel.  

scholarly journals Phanerozoic low-temperature evolution of the Uruguayan Shield along the South American passive margin

2017 ◽  
Vol 174 (4) ◽  
pp. 609-626 ◽  
Author(s):  
Mathias Hueck ◽  
Sebastián Oriolo ◽  
István Dunkl ◽  
Klaus Wemmer ◽  
Pedro Oyhantçabal ◽  
...  
Keyword(s):  
Low Temperature ◽  
Passive Margin ◽  
Temperature Evolution ◽  
South American ◽  
The South

Cnidochloa: A New Genus of Grasses from Brazil (Poaceae: Panicoideae: Paniceae)

2020 ◽  
Vol 105 (2) ◽  
pp. 183-194
Author(s):  
Fernando O. Zuloaga ◽  
Sandra S. Aliscioni ◽  
M. Amalia Scataglini
Keyword(s):  
New Genus ◽  
Phylogenetic Position ◽  
South American ◽  
The South ◽  
South American Species ◽  
Molecular Characters

Generic boundaries of the South American species Panicum longipedicellatum Swallen are explored and compared with allied genera of the tribe Paniceae. On the basis of morphological, anatomical, and molecular characters a new genus, Cnidochloa Zuloaga, is proposed. The phylogenetic position of the new genus within the Paniceae is evaluated.

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