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The sedimentary record of wet and dry eolian systems in the Cretaceous of South...
Mescolotti,Patricia Colombo; Varejão,Filipe Giovanini; Warren,Lucas Veríssimo; Ladeira,Francisco Sérgio Bernardes; Giannini,Paulo César FonsecaAbstract 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 and discuss two depositional units characterized by two distinct eolian systems that are bounded by a long-lived unconformity. The Lower Unit (Barremian/Aptian) encompasses a wet e...
THE VALO GRANDE CHANNEL IN THE CANANÉIA-IGUAPE ESTUARY-LAGOON COMPLEX (SP, BRAZ...
Prado,Helbert Medeiros; Schlindwein,Marcelo Nivert; Murrieta,Rui Sérgio Sereni; Nascimento Júnior,Daniel Rodrigues do; Souza,Eliel Pereira deAbstract The channel of the Valo Grande (VG) in the Ribeira de Iguape River (São Paulo State, Brazil), inaugurated in 1852, is one of the largest environmental disasters in the Brazilian coast. This article presents a synthesis of the historical, ecological, geographic and sociopolitical dimensions involving the VG. The VG has promoted the ecosystem disrupting and the landscape reconfiguration of Cananéia-Iguap...
Optically stimulated luminescence and isothermal thermoluminescence dating of h...
Sawakuchi,André Oliveira; Mendes,Vinicius Ribau; Pupim,Fabiano do Nascimento; Mineli,Thays Desiree; Ribeiro,Ligia Maria Almeida Leite; Zular,AndreABSTRACT: The development of optically stimulated luminescence (OSL) dating of sediments has led to considerable advance in the geochronology of the Quaternary. OSL dating is a well established technique to determine sediment burial ages from tens of years to few hundred thousand years. Recent studies have shown that Quaternary sediments of Brazil are dominated by quartz grains with high luminescence sensitivit...
Central Santa Catarina coastal dunefields chronology and their relation to rela...
Mendes,Vinícius Ribau; Giannini,Paulo César Fonseca; Guedes,Carlos Conforti Ferreira; DeWitt,Regina; Andrade,Helena Asmar de AbreuABSTRACTDuring the past decades, there have been contrarian explanations for the formation and stabilization of coastal dunefields: while many authors believe the dunes formation would be enhanced by falling sea level, others argue that a rising or stable sea level context would be favorable. For Brazilian coastal dunefields, the second hypothesis seems to be more consistent with the luminescence ages found so ...
Interações entre evolução sedimentar e ocupação humana pré-histórica na costa c...
Giannini,Paulo César Fonseca; Villagran,Ximena Suarez; Fornari,Milene; Nascimento Junior,Daniel Rodrigues do; Menezes,Priscila Melo LealDesde o começo da ocupação humana no litoral centro-sul de Santa Catarina, Brasil, a articulação entre processos naturais e antrópicos modelou uma paisagem fortemente domesticada, marcada pela construção massiva de concheiros de dimensões monumentais e pela permanência milenar. Na planície costeira entre Passagem da Barra (município de Laguna) e lago Figueirinha (município de Jaguaruna), 76 sambaquis foram mape...