Depth profiles in a tropical, volcanic critical zone observatory: Basse-Terre, Guadeloupe

HL Buss, AF White, C Dessert, J Gaillardet, AE Blum, PB Sak

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

11 Citations (Scopus)
26 Downloads (Pure)

Abstract

The Bras David watershed on the French island of Basse-Terre, Guadeloupe in the Lesser Antilles is located on a late Quaternary volcaniclastic debris flow of dominantly andesitic composition. The bedrock is mantled by more than 12 m of highly leached regolith. The regolith is depleted with respect to most primary minerals and weathering is dominated by the dissolution and precipitation of clays. Mineral nutrient cations such as Mg, K, and P are largely present as impurities or adsorbed to clays and iron oxides. Surface soils (<0.3 m depth) are enriched in feldspar, quartz, cristobalite, and solid state Fe(II), Ca, K, and Mg relative to the underlying regolith, likely reflecting atmospheric deposition, possibly related to volcanic activity.
Translated title of the contributionDepth profiles in a tropical, volcanic critical zone observatory: Basse-Terre, Guadeloupe
Original languageEnglish
Title of host publicationWater-Rock Interaction XIII
EditorsIS Torres-Alvarado, P Birkle
PublisherCRC Press
Pages245 - 248
Number of pages4
ISBN (Print)9781439862995
Publication statusPublished - 2010

Fingerprint Dive into the research topics of 'Depth profiles in a tropical, volcanic critical zone observatory: Basse-Terre, Guadeloupe'. Together they form a unique fingerprint.

Cite this