The look-up table LUT_COARSE_FRAG_ABUND from AusPlots Rangelands.
Particles coarser than 2 mm including unattached rock, shells, charcoal but not segregations of pedogenic origin.
White, A, Sparrow, B., Leitch, E., Foulkes, J., Flitton, R., Lowe, A.J., Caddy-Retalic, S. (2012). AusPlots Rangelands Survey Protocols Manual. Version 1.2.9 page 72. Terrestrial Ecosystem Research Network and The University of Adelaide Press. https://doi.org/10.25901/5f2ca309cc9c2
TERN is supported by the Australian Government through the National Collaborative Research Infrastructure Strategy, NCRIS.