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

H. L. Buss, A. F. White, C. Dessert, J. Gaillardet, A. E. Blum, P. B. Sak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

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 adsorbed to, or co-precipitated with, clays and iron oxides. Surface soils (< 0.3 m depth) are enriched in feldspar, quartz, cristobalite, and Fe(II), Ca, K, and Mg relative to the underlying regolith, likely reflecting atmospheric deposition, possibly related to volcanic activity.

Original languageEnglish (US)
Title of host publicationWater-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13
Pages245-248
Number of pages4
StatePublished - Dec 1 2010
Event13th International Conference on Water-Rock Interaction, WRI-13 - Guanajuato, Mexico
Duration: Aug 16 2010Aug 20 2010

Publication series

NameWater-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13

Other

Other13th International Conference on Water-Rock Interaction, WRI-13
CountryMexico
CityGuanajuato
Period8/16/108/20/10

All Science Journal Classification (ASJC) codes

  • Geology

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