Heavy minerals in sediments of the French Guiana coast: Sources of deposits on Guiana shelves

The distribution of heavy minerals on beaches and beach ridges sands of French Guiana shows three distinct suites from East to West: amphibole (largely dominant), staurolite, epidote and pyroxene off the Cayenne region, tourmaline and amphibole mainly off the Kourou-Mana, garnet, staurolite and tour...

Full description

Saved in:
Bibliographic Details
Published inOceanologica acta Vol. 24; pp. S27 - S35
Main Authors Pujos, M, Pons, J-C, Parra, M
Format Journal Article
LanguageEnglish
French
Published 01.01.2001
Subjects
Marine
ASW, French Guiana
Online AccessGet full text

Cover

More Information
Summary:The distribution of heavy minerals on beaches and beach ridges sands of French Guiana shows three distinct suites from East to West: amphibole (largely dominant), staurolite, epidote and pyroxene off the Cayenne region, tourmaline and amphibole mainly off the Kourou-Mana, garnet, staurolite and tourmaline off the Mana-Maroni. A very good continuity exists between the assemblages of heavy minerals from the catchment area parent-rocks, the fluviatile sediments, the coastal zone and the shelf. The results of this study indicate and strengthen a local origin for the sandy sediments and do not support a possibility of an Amazonian source.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0399-1784