Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-24T04:54:59.474Z Has data issue: false hasContentIssue false
  • English
  • Français

Possible effects of land use on the clay mineralogy of a brown forest soil

Published online by Cambridge University Press:  09 July 2018

D. C. Bain  and
D. T. Griffen
D. C. Bain*
Affiliation:
The Macaulay Institute, CraigiebucklerAberdeen AB15 8QH, UK
D. T. Griffen
Affiliation:
Department of Geology, Brigham Young University, Provo, Utah 84602, USA
*
*E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Three soil profiles classed as brown forest soils on schistose parent material, in close proximity but under different land uses, have been studied. The profile under 50 year-old Sitka spruce trees is the most acidic, the second profile under rough grassland is less acidic, and the third profile in an arable field which has been fertilized is the least acidic. The clay fractions (ς μm) of all three profiles are very similar. However, computer simulations of the X-ray diffraction patterns of clay phases using a modified version of NEWMOD revealed two possible weathering trends: (1) an increasing proportion of vermiculite in interstratified mica-vermiculite in the upper horizons of the arable and forested soils; (2) formation of high-charge corrensite by weathering of chlorite in all three profiles but least pronounced in the arable soil. The differences in clay mineralogy amongst the profiles are minor, but these two different weathering trends may be due to the effects of different land use.

Keywords

high-charge corrensiteinterstratified mica-vermiculiteland usesoil claysweathering
Type
Research Article
Information
Clay Minerals , Volume 37 , Issue 4 , December 2002 , pp. 663 - 670
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bain, D.C. (1977) The weathering of ferruginous chlorite in a podzol from Argyllshire, Scotland. Geoderma, 17, 193–208.Google Scholar
Bain, D.C. (1995) Hydroxy-interlayered clays as indicators of environmental change. Terra Abstracts (abstract supplement No. 1 to Terra Nova, Vol. 7), 249.Google Scholar
Bain, D.C., Mellor, A. & Wilson, M.J. (1990) Nature and origin of an aluminous vermiculitic weathering product in acid soils from upland catchments in Scotland. Clay Minerals, 25, 467–475.Google Scholar
Bouyoucos, G.J. (1927) The hydrometer as a new method for the mechanical analysis of soils. Soil Science, 23, 343–353.Google Scholar
Brindley, G.W. & Brown, G. (1980) Crystal Structures of Clay Minerals and their X-ray Identification. Monograph 5, Mineralogical Society, London.Google Scholar
Moore, D.M. and Jr.Reynolds, R.C., (1997) X-ray Diffraction and the Identification and Analysis of Clay Minerals. Oxford University Press, New York.Google Scholar
Norrish, K. and Hutton, J.T. (1969) An accurate X-ray spectrographic method for the analysis of a wide range of geologica l samples. Geochimica et Cosmochimica Acta, 33, 431–453.Google Scholar
Petschick, R., Kuhn, G. and Gingele, F. (1996) Clay mineral distribution in surface sediments of the South Atlantic: Sources, transport and relation to oceanography. Marine Geology, 130, 203–229.Google Scholar
Jr.Reynolds, R.C., (1985) NEWMOD­ a computer program for the calculation of one-dimensional diffraction profiles of clays. Reynolds, R.C., 8 Brook Road, Hannover, New Hampshire, USA.Google Scholar
Soil Survey Staff (1998) Keys to Soil Taxonomy. United States Department of Agriculture/Natural Resources Conservation Service.Google Scholar
Velde, B. & Peck, T. (2002) Clay mineral changes in the Morrow experimental plots, University of Illinois. Clays and Clay Minerals, 50, 364–370.Google Scholar
Walker, G.F. (1949) The decomposition of biotite in the soil. Mineralogical Magazine, 28, 693–703.Google Scholar
Wilson, M.J. (1999) The origin and formation of clay minerals in soil: past, present and future perspectives. Clay Minerals, 34, 7–25.Google Scholar