Towards an Integrated Model of Weathering, Climate, and Biospheric Processes

Abstract

Research Article| January 01, 2009 Towards an Integrated Model of Weathering, Climate, and Biospheric Processes Yves Goddéris; Yves Goddéris Laboratoire d’étude des Mécanismes et Transferts en Géologie, Observatoire Midi-Pyrénées, CNRS-Université de Toulouse, Toulouse, France Contact e-mail: godderis@lmtg.obs-mip.fr Search for other works by this author on: GSW Google Scholar Caroline Roelandt; Caroline Roelandt Laboratoire d’étude des Mécanismes et Transferts en Géologie, Observatoire Midi-Pyrénées, CNRS-Université de Toulouse, Toulouse, France Search for other works by this author on: GSW Google Scholar Jacques Schott; Jacques Schott Laboratoire d’étude des Mécanismes et Transferts en Géologie, Observatoire Midi-Pyrénées, CNRS-Université de Toulouse, Toulouse, France Search for other works by this author on: GSW Google Scholar Marie-Claire Pierret; Marie-Claire Pierret Centre de Géochimie de la Surface, Université de Strasbourg, Strasbourg, France Search for other works by this author on: GSW Google Scholar Louis M. François Louis M. François Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège, Liège, Belgium Search for other works by this author on: GSW Google Scholar Reviews in Mineralogy and Geochemistry (2009) 70 (1): 411–434. https://doi.org/10.2138/rmg.2009.70.9 Article history first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Yves Goddéris, Caroline Roelandt, Jacques Schott, Marie-Claire Pierret, Louis M. François; Towards an Integrated Model of Weathering, Climate, and Biospheric Processes. Reviews in Mineralogy and Geochemistry 2009;; 70 (1): 411–434. doi: https://doi.org/10.2138/rmg.2009.70.9 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyReviews in Mineralogy and Geochemistry Search Advanced Search Subaerial weathering of the continental rocks is an important component of global biogeochemical cycles. During the dissolution of continental rocks, atmospheric CO2 is consumed resulting in alkalinity production and its transfer to the ocean via river transport. Atmospheric carbon is also consumed during the dissolution reaction itself, as illustrated by the dissolution equation of plagioclase: \begin{eqnarray*}&&4Na_{0.5}Ca_{0.5}Al_{1.5}Si_{2.5}O_{8}\ +\ 17H_{2}O\ +\ 6CO_{2}\ {\rightarrow}\\&&3Al_{2}Si_{2}O_{5}(OH)_{4}\ +\ 2Na^{+}\ +\ 2Ca^{2+}\ +\ 6HCO_{3}^{{-}}\ +\ 4H_{4}SiO_{4}\end{eqnarray*} (1) Plagioclase dissolution produces dissolved species (basic cations, bicarbonate ions, and silica) and clay minerals which can precipitate locally. Dissolution of carbonate minerals also consumes atmospheric carbon, for example: \[CaCO_{3}\... You do not have access to this content, please speak to your institutional administrator if you feel you should have access.