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BIBTEX RIS

Early Silurian chitinozoans in the Apucarana Sub-Basin (Paraná Basin), south Brazil, and their biostratigraphic provenance

2005; Volume: 8; Issue: 3 Linguagem: Inglês

10.4072/rbp.2005.3.05

ISSN

2236-1715

Autores

Yngve Grahn,

Tópico(s)

Marine Biology and Ecology Research

Resumo

Early Silurian chitinozoans recovered from cuttings samples of pre-Silurian units of the PETROBRAS 1-SE-1-SC well, near Seara in the State of Santa Catarina, southern Brazil, are compared with those from shales in the lower part of the Vargas Peña Formation at Minas Cué and the Asunción-1 well, eastern Paraguay.The obviously caved assemblages show a pronounced similarity with chitinozoan faunas belonging to the regional Spinachitina wolfarti -Plectochitina sp.A Subzone (Conochitina elongata Zone) of early Aeronian (early middle Llandovery) age.Because of down hole contamination, a stratigraphic provenance from the early Aeronian Vila Maria Formation is proposed.

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