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(BerlinMeeting. 5th International Eurolat meeting en Anglais - 1994)

Document title

Geomorphological evolution and supergene gold ore at Posse, Goias State, Brazil

published at : Lateritization processes and supergene ore formation

Authors(s) and Affiliation(s)

HALE M. ; PORTO C.G. ;

Abstract

At Posse, primary gold mineralization occurs near the base of a sequence of metamorphosed volcanic and volcaniclastic rocks. During the Velhas geomorphological cycle (Oligocene to Lower Pleistocene) the region experienced extensive lateritization. The observed gold distribution in the weathering profile has arisen through saprolitization during the Velhas cycle, then leaching, compaction and downward (and limited lateral) transport of gold during pedogenesis. The climatic and geomorphological history of central Brazil has led to the formation of a low grade supergene gold orebody in the weathering profile at Posse

Source

Congrès

Meeting. 5th International Eurolat meeting, Berlin , ALLEMAGNE (01/08/1991)

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 1994, vol. 21, no 2-3 [pp. 145-157]

Bibliographic references : 10 ref.

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 16767

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1994.
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