Inferential Techniques for Soil Depth Determinations. Part I. Coleogyne ramosissima Torr. (Black-Brush).
Research note Apr 73-Aug 74,
ARMY ENGINEER TOPOGRAPHIC LABS FORT BELVOIR VA
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Inferential techniques for soil depth determinations in a high desert environment, Lake Powell, ArizonaUtah, were investigated. The use of vegetation as indicator species to facilitate determinations of soil depth and soil type were examined. Coleogyne ramosissima Torr., commonly called black-brush, has been established as a reliable indicator of the depth of soil to bedrock. Over 375 soil-depth to-bedrock measurements were performed. The soil depths to bedrock within Coleogyne ramosissima communities have a mean of 21 cm with a maximum of 100 cm the mean of soil depths to bedrock outside Coleogyne ramosissima communities was 120 cm, with a maximum measured depth of 180 cm.
- Soil Mechanics