Artigo Revisado por pares

Hydrological controls on chemical weathering rates at the soil-bedrock interface

2006; Geological Society of America; Volume: 34; Issue: 12 Linguagem: Inglês

10.1130/g23085a.1

ISSN

1943-2682

Autores

Emmanuel J. Gabet, Robin Edelman, Heiko W. Langner,

Tópico(s)

Landslides and related hazards

Resumo

Research Article| December 01, 2006 Hydrological controls on chemical weathering rates at the soil-bedrock interface Emmanuel J. Gabet; Emmanuel J. Gabet 1Department of Geology, University of Montana, Missoula, Montana 59802, USA Search for other works by this author on: GSW Google Scholar Robin Edelman; Robin Edelman 2Department of Geology and Environmental Sciences, Northeastern Illinois University, Chicago, Illinois 60625, USA Search for other works by this author on: GSW Google Scholar Heiko Langner Heiko Langner 3Department of Geology, University of Montana, Missoula, Montana 59802, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Emmanuel J. Gabet 1Department of Geology, University of Montana, Missoula, Montana 59802, USA Robin Edelman 2Department of Geology and Environmental Sciences, Northeastern Illinois University, Chicago, Illinois 60625, USA Heiko Langner 3Department of Geology, University of Montana, Missoula, Montana 59802, USA Publisher: Geological Society of America Received: 12 Jun 2006 Revision Received: 21 Jul 2006 Accepted: 25 Jul 2006 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 The Geological Society of America, Inc. Geology (2006) 34 (12): 1065–1068. https://doi.org/10.1130/G23085A.1 Article history Received: 12 Jun 2006 Revision Received: 21 Jul 2006 Accepted: 25 Jul 2006 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Emmanuel J. Gabet, Robin Edelman, Heiko Langner; Hydrological controls on chemical weathering rates at the soil-bedrock interface. Geology 2006;; 34 (12): 1065–1068. doi: https://doi.org/10.1130/G23085A.1 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 SocietyGeology Search Advanced Search Abstract Chemical weathering of bedrock is critical to maintaining terrestrial life, and climate, typically as manifested by precipitation, is often identified as having a first-order control on rates of chemical weathering. The ability of precipitation to dissolve rock, however, is modulated by the properties of the overlying soil that influence the contact time between water and minerals. Flume experiments were conducted to investigate the hydrological controls on rates of chemical weathering. Solute concentrations of runoff flowing across synthetic bedrock overlain by nonreactive pseudosoils of differing hydraulic conductivities were measured to examine the role of seepage velocity in influencing weathering rates on steep slopes. The results suggest that, where weathering is not limited by the supply of fresh minerals, weathering rates should increase with decreasing hydraulic conductivity. In addition, a mathematical relationship between hydraulic conductivity and chemical weathering on hillslopes is introduced to explore the hydrological controls on feldspar and calcite dissolution rates. The mathematical model supports the results from the experiments. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

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