SciELO - Scientific Electronic Library Online

vol.72 número2The Sm-Nd isotopic method in the geochronology laboratory of the University of BrasíliaThe quaternary geological history of the Santa Catarina Southeastern Region (Brazil) índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Anais da Academia Brasileira de Ciências

versão impressa ISSN 0001-3765
versão On-line ISSN 1678-2690


NOWATZKI, CARLOS H.  e  KERN, HENRIQUE P.. The eolianites between Sanga do Cabral and Botucatu formations in Rio Grande do Sul State, Brazil. An. Acad. Bras. Ciênc. [online]. 2000, vol.72, n.2, pp.247-256. ISSN 0001-3765.

This paper discusses the facies distribution of Mesozoic eolian sandstones between the Sanga do Cabral and Botucatu formations and also their contact relationships, in São Leopoldo area, State of Rio Grande do Sul (RS), southern Brazil. The main distinctive characteristics regarding these sandstones and formations are the mineralogical composition, paleocurrents and the occurrence of wet interdune deposits. These interdune deposits are characterized by frequent thin mudstone layers with mudcracks, ichnofossils and salt impressions. There are also some features that resemble plant fossils. The distinctive characteristics of these sequences to Sanga do Cabral and Botucatu formations allow us to suggest the informal name of Pedreira Sandstone, considering its type section, the Pedreira Cliff, at Sapucaia do Sul, RS.

Palavras-chave : stratigraphy; Paraná Basin; Mesozoic; faciology; paleoenvironments.

        · texto em Inglês     · Inglês ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons