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The schmidt hammer, weathering and rock surface roughness
Author(s) -
McCarroll Danny
Publication year - 1991
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.3290160510
Subject(s) - weathering , schmidt hammer , geology , pyroxene , surface finish , surface roughness , feldspar , limiting , texture (cosmology) , mineralogy , hammer , geotechnical engineering , geomorphology , materials science , metallurgy , composite material , paleontology , olivine , artificial intelligence , engineering , mechanical engineering , compressive strength , quartz , image (mathematics) , computer science
Measures of the differential relief of adjacent feldspar and pyroxene grains provide the first clear negative correlation of Schmidt hammer rebound (R‐) values and degree of weathering. However, weathering and roughness are intimately related, so the latter cannot be seen simply as a source of error limiting the utility of the Schmidt hammer. Only where surfaces had similar textures prior to weathering can R‐values be compared directly. Even where surface texture is well controlled, differences in R‐values should be viewed critically rather than assigned indiscriminately to differences in degree of weathering.