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Ten year remeasurement of chemical denudation on a magnesian limestone hillslope
Author(s) -
Trudgill S. T.,
Ferguson R. I.,
Ball J.,
Crabtree R. W.,
Gent R.
Publication year - 1994
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.3290190203
Subject(s) - denudation , bedrock , geology , soil science , mineralogy , hydrology (agriculture) , geomorphology , geotechnical engineering , paleontology , tectonics
Results from the measurement of microweight loss of Magnesian Limestone rock tablets placed at the soil–bedrock interface on a hillslope over 10 years (1982–1992) gave the same relative pattern of upslope increase in weight loss as did short‐term measurements (1979–1981), but the absolute values were an order of magnitude lower (0·01–0·03 per cent per year long term and 0·1–0·6 per cent per year short term). Microweighed rock tablets may therefore give unreliable absolute rates and can only be used to indicate relative spatial differences rather than to give reliable data on temporal changes.