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Grahn & Paris, 1992

Grahn, Y., Paris, F. 1992. Age and correlation of the Trombetas Group, Amazonas Basin, Brazil. Revue de Micropaleontologie 35 (3), 197-209. | DETAILS

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ID4400
ReferenceGrahn & Paris, 1992
AuthorGrahn, Y., Paris, F.
Year1992
TitleAge and correlation of the Trombetas Group, Amazonas Basin, Brazil
JournalRevue de Micropaleontologie
Volume35
Number3
pgs.197-209
Source typearticle in journal
LanguageEnglish
Abstract

The Trombetas Group in the Amazonas Basin has been dated with the help of chitinozoans. These indicate an age range from late Caradoc? to early Lochkovian. Major hiatuses occurr in the middle Wenlock, middle Ludlow and late Pridoli. The Trombetas Group is divided into four formations (from base to top): Autas-Mirim, Nhamunda, Pitinga and Manacapuru. The Silurian chitinozoan assemblages from Brazil show affinities with the Guinean ones.