Gold: a tracer of the dynamics of tropical laterites

F. Colin, Z. Sanfo, E. Brown, D. Bouries, A. E. Minko

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The properties of gold make residual gold particles tracers of surficial processes causing mineralized laterites. Gold particles are useful in distinguishing between in situ chemical weathering and physical transport in African lateritic systems developed on slowly eroding stable landforms. In an equatorial rainforest setting, chemical dissolution and translocation of fine particles are the dominant processes. Episodic alluvial and/or colluvial transport appears to contribute to laterite formation in the subsahelian steppe. The use of gold particles, coupled with the examination of in situ 10 Be from auriferous quartz, indicates the applicability of such methods for examination of lateritic weathering dynamics of the tropical 'transcontinental' lithosphere.

Original languageEnglish (US)
Pages (from-to)81-84
Number of pages4
JournalGeology
Volume25
Issue number1
DOIs
StatePublished - Jan 1 1997
Externally publishedYes

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