15. Mollisols: Grassland Soils of Steppes and Prairies

  1. S. W. Buol B.S., M.S., Ph.D.1,
  2. R. J. Southard B.S, M.S., Ph.D.2,
  3. R. C. Graham3 and
  4. P. A. McDaniel B.S., M.S., Ph.D.4

Published Online: 5 AUG 2011

DOI: 10.1002/9780470960622.ch15

Soil Genesis and Classification, Sixth Edition

Soil Genesis and Classification, Sixth Edition

How to Cite

Buol, S. W., Southard, R. J., Graham, R. C. and McDaniel, P. A. (2011) Mollisols: Grassland Soils of Steppes and Prairies, in Soil Genesis and Classification, Sixth Edition, Wiley-Blackwell, Oxford, UK. doi: 10.1002/9780470960622.ch15

Author Information

  1. 1

    North Carolina State University, Raleigh, USA

  2. 2

    University of California, Davis, USA

  3. 3

    University of California, Riverside, USA

  4. 4

    University of Idaho, Moscow, USA

Publication History

  1. Published Online: 5 AUG 2011
  2. Published Print: 2 SEP 2011

ISBN Information

Print ISBN: 9780813807690

Online ISBN: 9780470960622



  • Mollisols - grassland soils of Steppes and Prairies;
  • Mollisols (from Latin mollis, soft) - characterized by deep, dark, friable and fertile surface horizon (or horizons), a mollic epipedon;
  • other Mollisols, including soils - of poorly drained lowland hardwood forests;
  • Mollisols, 7% or more than 9,128,000 km2 - of ice-free global land to area;
  • Pachic Argicryoll from Lemhi County, Idaho - formed in glacial drift, thick (pachic) mollic epipedon;
  • grassland boundaries, migrating - older Mollisols, under more than one climatic regime and plant community;
  • Mollisols, on deposits and landscapes - range of ages, in Holocene-age deposits;
  • melanization, process of darkening of soil - by addition and decomposition of organic matter;
  • cumulization, or addition of mineral material - to soil surface;
  • Mollisols, thought of as those soils - having mollic epipedons


This chapter contains sections titled:

  • Setting

  • Pedogenic Processes

  • Uses of Mollisols

  • Classification of Mollisols

  • Perspective