New geological framework for Western Amazonia (Brazil) and implications for biogeography and evolution

Auteurs :
DE FÁTIMA ROSSETTI, D.
MANN DE TOLEDO, P.
GÓES, A.M.

Description :
The AA. mapped and characterized the sedimentary units overlying the Miocene deposits of the Solimoes and Barreiras formations with basis on an integrated study combining analysis of radar images, field and laboratory sedimentologic data, and C 14 dating. The area emphasized in this work includes a 300-m-wide belt on both sides of the Amazon-Solimoes River, from Tabatinga, near the Colombia border, to Gurupa, in the state of Para. The results provide new elements for the reconstruction of the Amazon geological history, and so for discussion of the validity of the currently accepted hypothesis concerning to biome evolution and species distribution.


Type de document :
Article de périodique

Source :
Quaternary research, issn : 0033-5894, 2005, vol. 63, n°. 1, p. 78-89, nombre de pages : 12, Collation : Illustration, Références bibliographiques : 67 ref.

Date :
2005

Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier