Petrology of fluvial sands from the Amazonian foreland basin, Peru and Bolivia

P. G. Decelles, F. Hertel

Research output: Contribution to journalArticle

70 Scopus citations

Abstract

Modal sand compositions in nine rivers draining the proximal part of the Amazonian retroarc foreland basin in Peru and Bolivia provide support for the Recycled Orogen provenance model of Dickinson and Suczek. The overriding control on sand composition is the relative area of bedrock type exposed in the fold-thrust belt. Sands reworked from Tertiary and Quaternary foreland-basin fill are relatively enriched in quartz, possibly owing to intense weathering of sediments in the soil profile. -from Authors

Original languageEnglish (US)
Pages (from-to)1552-1562
Number of pages11
JournalGeological Society of America Bulletin
Volume101
Issue number12
DOIs
StatePublished - Jan 1 1989
Externally publishedYes

ASJC Scopus subject areas

  • Geology

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