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GEOREF RECORD

Physical and chemical controls on the critical zone

Suzanne Prestrud Anderson, Friedhelm von Blanckenburg and Arthur F. White
Physical and chemical controls on the critical zone (in The critical zone; where rock meets life, Susan L. Brantley (editor), Timothy S. White (editor) and K. Vala Ragnarsdottir (editor))
Elements (October 2007) 3 (5): 315-319

Abstract

Geochemists have long recognized a correlation between rates of physical denudation and chemical weathering. What underlies this correlation? The Critical Zone can be considered as a feed-through reactor. Downward advance of the weathering front brings unweathered rock into the reactor. Fluids are supplied through precipitation. The reactor is stirred at the top by biological and physical processes. The balance between advance of the weathering front by mechanical and chemical processes and mass loss by denudation fixes the thickness of the Critical Zone reactor. The internal structure of this reactor is controlled by physical processes that create surface area, determine flow paths, and set the residence time of material in the Critical Zone. All of these impact chemical weathering flux.


ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 3
Serial Issue: 5
Title: Physical and chemical controls on the critical zone
Title: The critical zone; where rock meets life
Author(s): Anderson, Suzanne Prestrudvon Blanckenburg, FriedhelmWhite, Arthur F.
Author(s): Brantley, Susan L.editor
Author(s): White, Timothy S.editor
Author(s): Ragnarsdottir, K. Valaeditor
Affiliation: University of Colorado, INSTAAR, Boulder, CO, United States
Affiliation: Pennsylvania State University, Earth and Environmental Systems Institute, University Park, PA, United States
Pages: 315-319
Published: 200710
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, International
References: 33
Accession Number: 2008-032681
Categories: Geomorphology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: University of Bristol, GBR, United KingdomUniversity of Hannover, DEU, Federal Republic of GermanyU. S. Geological Survey, USA, United States
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200810
Program Name: USGSOPNon-USGS publications with USGS authors
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