Denudation history of the Bocaina Plateau, Serra do Mar, southeastern Brazil: Relationships to Gondwana breakup and passive margin development

Hiruma, Silvio Takashi; Riccomini, Cláudio; Modenesi-Gauttieri, May Christine; Hackspacher, Peter Christian; Neto, Júlio César Hadler; Franco-Magalhães, Ana Olívia Barufi

doi:10.1016/j.gr.2010.03.001

Cited by 93 publications

(79 citation statements)

References 52 publications

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“…As idades TFA refletem esta morfologia de margem passiva, com um aumento das idades de 40-90 Ma na planície costeira para >300 Ma no interior continental, configurando uma maior denudação na planície, como sugerido por diversos autores (p. ex., Gallagher et al, 1994Gallagher et al, , 1995Gallagher & Brown, 1999;Carmo, 2005;Hiruma et al, 2010;Engelmann de Oliveira et al, 2016).…”

Section: Discussão Dos Resultadosunclassified

“…Diversos autores (p. ex., Gallagher et al, 1994Gallagher et al, , 1995Hiruma et al, 2010;Jelinek et al, 2014;Engelmann de Oliveira et al, 2016) discutem que as altas taxas de denudação pós-rifte indicadas para a margem, provavelmente refletem a geometria e o momento da reativação tectônica pós-rifte de estruturas intracontinentais maiores, e as taxas de denudação são correlacionáveis às espessuras do registro sedimentar offshore nas bacias de Santos e Espírito Santo. O Arco de Ponta Grossa, na região de Curitiba, apresenta as idades TFA mais jovens de toda a margem continental (Fig.…”

Section: Discussão Dos Resultadosunclassified

“…A reativação tectônica Cenozoica do embasamento continental e consequente formação de Riftes Cenozoicos também é sugerido por outros autores na margem sudeste (p. ex., Hiruma et al, 2010;Cogné et al, 2012;Karl et al, 2013;Engelmann de Oliveira et al, 2016). Ao contrário da margem sudeste, a margem nordeste, na região do Cráton São Francisco, registra idades TFA mais antigas e um episódio térmico durante o Permiano e Jurássico Inferior, reflexo da Orogenia Gondwanide como sugerido por Jelinek et al (2014).…”

Section: Discussão Dos Resultadosunclassified

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História termotectônica da margem continental brasileira a partir de dados de traços de fissão em apatita

Oliveira

Jelinek

2017

Pesq Geoc

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A margem continental brasileira denota estruturas geomorfológicas moldadas durante vários episódios de atividade tectônica iniciados no Neoproterozoico. Com o objetivo de estabelecer um modelo de história termotectônica para a margem continental brasileira, foi realizada a integração e reinterpretação dos dados traços de fissão em apatita (TFA) disponíveis ao longo de toda a margem continental. As idades TFA variam de ~385-10 Ma. Os dados TFA revelam que a margem continental foi caracterizada por pelo menos três eventos térmicos após o Ciclo Brasiliano: Cretaceo Inferior, Cretaceo Superior e Paleógeno-Neógeno. Os eventos são relacionados aos processos de abertura do Oceano Atlântico Sul e às fases rifte e pós-rifte, com reativações tectônicas ao longo da margem. A Província Mantiqueira e o Cráton São Francisco registram os eventos mais antigos, desde o Ordoviciano e o Permiano, respectivamente, que afetaram de modo variado diferentes partes dessas províncias como reflexo das orogenias Famatiniana e Gondwanide.

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Section: Discussão Dos Resultadosunclassified

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História termotectônica da margem continental brasileira a partir de dados de traços de fissão em apatita

Oliveira

Jelinek

2017

Pesq Geoc

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“…According to Soares et al [35], this region is strongly influenced by the topography of the Serra do Mar, with the most intense rainfall occurring on the steep slopes of the escarpment. 2000 1392 1822 2001 1197 1853 2002 1286 2339 2003 1195 2441 2004 1457 2484 2005 1067 2756 2006 1159 2489 2007 1227 1918 2008 1509 2818 2009 1669 2934 2010 1639 2366 The Bocaina Plateau is the highest area (>2000 m of altitude) of the Serra do Mar (1000 km of extension) situated on the eastern flank of the continental rift border of Southeastern Brazil [36]. The main lithologies of Serra da Bocaina are medium to high-grade orthogneisses and paragneisses, dominated by regional NE-SW trending ductile shear zones that dip steeply (~60 • ) to the northwest or southeast [37] (Figure 2).…”

Section: Study Areamentioning

confidence: 99%

“…Lastly, late Pleistocene to Holocene neotectonic reactivation caused significant altitude differences between the Bocaina Plateau and adjacent rift valley, determining the local geomorphologic features with abrupt escarpments, a drainage network pattern controlled by the fault zones, and alluvial fan deposits at the base of mountains [44,45]. The Bocaina Plateau is the highest area (>2000 m of altitude) of the Serra do Mar (1000 km of extension) situated on the eastern flank of the continental rift border of Southeastern Brazil [36]. The main lithologies of Serra da Bocaina are medium to high-grade orthogneisses and paragneisses, dominated by regional NE-SW trending ductile shear zones that dip steeply (~60°) to the northwest or southeast [37] (Figure 2).…”

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confidence: 99%

Determination of Areas Susceptible to Landsliding Using Spatial Patterns of Rainfall from Tropical Rainfall Measuring Mission Data, Rio de Janeiro, Brazil

Guimarães

Machado

Júnior

et al. 2017

IJGI

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Spatial patterns of shallow landslide initiation reflect both spatial patterns of heavy rainfall and areas susceptible to mass movements. We determine the areas most susceptible to shallow landslide occurrence through the calculation of critical soil cohesion and spatial patterns of rainfall derived from TRMM (Tropical Rainfall Measuring Mission) data for Paraty County, State of Rio de Janeiro, Brazil. Our methodology involved: (a) creating the digital elevation model (DEM) and deriving attributes such as slope and contributing area; (b) incorporating spatial patterns of rainfall derived from TRMM into the shallow slope stability model SHALSTAB; and (c) quantitative assessment of the correspondence of mapped landslide scars to areas predicted to be most prone to shallow landsliding. We found that around 70% of the landslide scars occurred in less than 10% of the study area identified as potentially unstable. The greatest concentration of landslides occurred in areas where the root strength of vegetation is an important contribution to slope stability in regions of orographically-enhanced rainfall on the coastal topographic flank. This approach helps quantify landslide hazards in areas with similar geomorphological characteristics, but different spatial patterns of rainfall.

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Spatial and temporal uplift history of South America from calibrated drainage analysis

Tribaldos

White

Hoggard

2017

Geochem Geophys Geosyst

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A multidisciplinary approach is used to analyze the Cenozoic uplift history of South America. Residual depth anomalies of oceanic crust abutting this continent help to determine the pattern of present‐day dynamic topography. Admittance analysis and crustal thickness measurements indicate that the elastic thickness of the Borborema and Altiplano regions is ≤10 km with evidence for sub‐plate support at longer wavelengths. A drainage inventory of 1827 river profiles is assembled and used to investigate landscape development. Linear inverse modeling enables river profiles to be fitted as a function of the spatial and temporal history of regional uplift. Erosional parameters are calibrated using observations from the Borborema Plateau and tested against continent‐wide stratigraphic and thermochronologic constraints. Our results predict that two phases of regional uplift of the Altiplano plateau occurred in Neogene times. Regional uplift of the southern Patagonian Andes also appears to have occurred in Early Miocene times. The consistency between observed and predicted histories for the Borborema, Altiplano, and Patagonian plateaux implies that drainage networks record coherent signals that are amenable to simple modeling strategies. Finally, the predicted pattern of incision across the Amazon catchment constrains solid sedimentary flux at the Foz do Amazonas. Observed and calculated flux estimates match, suggesting that erosion and deposition were triggered by regional Andean uplift during Miocene times.

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Denudation history of the Bocaina Plateau, Serra do Mar, southeastern Brazil: Relationships to Gondwana breakup and passive margin development

Cited by 93 publications

References 52 publications

História termotectônica da margem continental brasileira a partir de dados de traços de fissão em apatita

História termotectônica da margem continental brasileira a partir de dados de traços de fissão em apatita

Determination of Areas Susceptible to Landsliding Using Spatial Patterns of Rainfall from Tropical Rainfall Measuring Mission Data, Rio de Janeiro, Brazil

Spatial and temporal uplift history of South America from calibrated drainage analysis

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