TY - GEN
T1 - Depth profiles in a tropical, volcanic critical zone observatory
T2 - 13th International Conference on Water-Rock Interaction, WRI-13
AU - Buss, H. L.
AU - White, A. F.
AU - Dessert, C.
AU - Gaillardet, J.
AU - Blum, A. E.
AU - Sak, P. B.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84860125098
SN - 9780415604260
T3 - Water-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13
SP - 245
EP - 248
BT - Water-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13
Y2 - 16 August 2010 through 20 August 2010
ER -