A reassessment of the genesis of the Sangamon stone line and texture contrast profile in McDonough County, western Illinois

This research reassesses the origin of the Sangamon stone line and texture contrast profile in a portion of western Illinois. Stone lines are commonly interpreted as former surface lags fanned by hillslope erosion owed to changes in environment, mainly climate. According to erosion models, texture contrast soils with stone lines are developed in two parent materials where the stone line separates an underlying, truncated, often fine-textured autochthonous subsoil from a younger, overlying coarse-textured allochthonous hillslope deposit. The hillslope deposit commonly possesses upper solum characteristics that are interpreted to have developed subsequent to the erosional event. As an alternative to the erosion hypothesis, some texture contrast stone line soils are interpreted to have formed biopedogenically in one parent material through the vertical sorting activity of soil fauna.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Geography

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Balek, Cynthia L.

Contributors dc:contributor

• Johnson, D.L.

• Biology, Ecology
• Physical Geography
• Biogeochemistry

Statement dc:rights

• Copyright 1995 Balek, Cynthia L.

Language dc:language

eng

Identifier

AAI9543522
(UMI)AAI9543522

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/23437