2001
DOI: 10.1590/s0102-261x2001000200001
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Abstract: Investigação pioneira aplicando Radar de Penetração no Solo (GPR) na área da Praia do Atalaia, norte do Brasil, nos permitiu caracterizar, pela primeira vez, fácies e estratigrafia dos depósitos conhecidos informalmente como Sedimentos Pós-Barreiras (Plioceno e mais recente). Esta sucessão sedimentar recobre discordantemente o embasamento miocênico, representado pelas formações Pirabas/Barreiras. Três unidades estratigráficas foram reconhecidas. A Unidade 1, inferior, consiste em um intervalo com 6 m de espess… Show more

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Cited by 15 publications
(12 citation statements)
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“…Previous studies combining fieldwork with GPR data has helped to improve our knowledge related to the paleoenvironmental and stratigraphic framework of Neogene deposits in northeastern Pará State and to analyze them within the context of sea level changes (Rossetti et al 1989, Rossetti 2001 (Rossetti et al 2003). Correlation between late Cenozoic units from northeastern Pará State and temporally equivalent deposits located approximately 600 km of distance in the São Luís-Grajaú Basin, Maranhão State, has led to a refined history of sea level changes for northern Brazil (Rossetti 2000).…”
Section: Geological Backgroundmentioning
confidence: 99%
“…Previous studies combining fieldwork with GPR data has helped to improve our knowledge related to the paleoenvironmental and stratigraphic framework of Neogene deposits in northeastern Pará State and to analyze them within the context of sea level changes (Rossetti et al 1989, Rossetti 2001 (Rossetti et al 2003). Correlation between late Cenozoic units from northeastern Pará State and temporally equivalent deposits located approximately 600 km of distance in the São Luís-Grajaú Basin, Maranhão State, has led to a refined history of sea level changes for northern Brazil (Rossetti 2000).…”
Section: Geological Backgroundmentioning
confidence: 99%
“…For instance, details of the depositional environments have not been presented, which is partly due to their overall massive sandy nature. In general, these strata have been more commonly attributed to aeolian environments (Rossetti et al, 2001). However, most of these deposits are poorly sorted and highly bioturbated, which do not conform to deposition entirely by aeolian processes.…”
Section: Introductionmentioning
confidence: 99%
“…No Pará, e oeste maranhense, os depósitos são interpretados como de origem transicional, relacionados a sistema de paleovales estuarinos (Rossetti, 2006). Esses paleovales teriam controlado também, no Pleistoceno tardio e Holoceno, a deposição dos sedimentos Pós-Barreiras (Rossetti et al, 2001;Tatumi et al, 2008). Os depósitos eólicos quaternários da costa maranhense mapeados por foram estudados com detalhe em poucos trabalhos (Gonçalves, 1997;Almeida-Filho et al, 2009;Gastão & Maia, 2010;Maia et al, 2011).…”
Section: Contexto Geológico Regionalunclassified