Geochronological evidence for pervasive miocene weathering, Minas Gerais, Brazil

Auteurs :
DE O. CARMO, I.
VASCONCELOS, P.

Description :
To test the hypothesis that similar weathering profiles within a particular geomorphological province can be regionally correlated based on their age, the AA. have analyzed supergene Mn oxides from 3 similar weathering profiles in a single geomorphological province, the Brazilian Atlantic Plateau, Minas Gerais. Good correlations between the weathering geochronology data and independent paleoclimatic proxies suggesting warm and humid conditions for the 10-8 Ma interval (Late Miocene) indicates that weathering geochronology may be a useful tool in continental paleoclimatic history reconstruction.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2004, vol. 29, n°. 11, p. 1303-1320, nombre de pages : 18, Collation : Illustration, Références bibliographiques : 36 ref.

Date :
2004

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley