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Daniel Conley

Daniel Conley

Professor

Daniel Conley

Si precipitation during weathering in different Icelandic Andosols

Author

  • Wim Clymans
  • T. Lehtinen
  • G. Gisladottir
  • G. J. Lair
  • L. Barao
  • K. V Ragnarsdottir
  • E. Struyf
  • Daniel Conley

Summary, in English

Basaltic weathering from volcanic islands plays a critical role in the climate feedback loop. Geochemical and climate models require information on the rate of secondary mineral formation. We provide direct evidence for precipitation of amorphous Si in organic rich and acidic Histic Andosols compared to preferential allophane formation in organic poor and less acidic Haplic Andosols. Similar results have been obtained from the pioneering work by Opfergelt et al(1) using Si isotope composition. Additionally, enhanced allophane precipitation in Haplic Andosols, independent of long-term soil property changes, highlight the potential role of land use and management on secondary mineral formation. (C) 2014 The Authors. Published by Elsevier B.V.

Department/s

  • Quaternary Sciences

Publishing year

2014

Language

English

Pages

260-265

Publication/Series

Geochemistry of the Earth's Surface GES-10

Volume

10

Document type

Conference paper

Publisher

Elsevier

Topic

  • Geology

Keywords

  • Silicon
  • Allophane formation
  • Land Management
  • Weathering
  • Andosols

Conference name

Geochemistry of the Earth's Surface (GES) Meeting

Conference date

2014-08-18 - 2014-08-23

Status

Published

ISBN/ISSN/Other

  • ISSN: 1878-5220