Skip to main content
SpringerLink
Log in

Dissolved silica in the Garonne River waters: changes in the weathering dynamics

  • Research article
  • Published:
Environmental Geology

Abstract

 The major ion chemistry of the Garonne River is indicative of seasonal variations in the weathering dynamics of the drainage basin. Using the geochemical model MEGA for calculation of the contribution of atmospheric CO2 to the total bicarbonate fluxes exported by the Garonne River allows estimations of the concentrations of the major dissolved elements that originate from silicate- and carbonate-rock weathering. The molecular ratio SiO2/Al2O3 was calculated for the 1989–1992 period to identify the main type of weathering in the Garonne River, and montmorillonite was shown to be the major mineral occurring in the weathering products. The seasonal variations of the SiO2/Al2O3 ratio also showed that removal of silica was accelerated during humid periods.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Author information

Authors and Affiliations

  1. Centre de Géochimie de la Surface, CNRS/Université Louis Pasteur, Ecole et Observatoire des Sciences de la Terre, 1 rue Blessig, 67084 Strasbourg, France, , , , , , FR

    K. Semhi & N. Clauer

  2. Laboratoire Géosol, Centre des Sciences de la Terre, Université de Bourgogne, 6 Boulevard Gabriel, 21000 Dijon, France, , , , , , FR

    P. Amiotte Suchet

  3. Laboratoire des Mécanismes de Transfert en Géologie (CNRS/UPS), 38 rue des 36 Ponts, 31400 Toulouse, France, , , , , , FR

    J.-L. Probst

Authors
  1. K. Semhi
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. P. Amiotte Suchet
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. N. Clauer
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. J.-L. Probst
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Revision received: 14 May 1999 · Accepted: 12 January 2000

Rights and permissions

Reprints and permissions

About this article

Cite this article

Semhi, K., Amiotte Suchet, P., Clauer, N. et al. Dissolved silica in the Garonne River waters: changes in the weathering dynamics. Environmental Geology 40, 19–26 (2000). https://doi.org/10.1007/s002540000119

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s002540000119

Keywords

Search

Navigation