Eine neue, einfache geröllmorphometrische Methode

Gerd LÜttig
Instead of Cailleux's indices of pebble shape (rounding index, flatness index, dissymetry index), the measuring of which is still somewhat troublesome, the indices ϱ (percentage of convex parts of the boulder circumference according to Szadeczky-Kardoss 1933) π = L/E and σ = L/l (L — length, E = thickness, l = breadth of the pebble grain) are proposed to future use. ϱ being taxed by the eye, the indices σ and π are measured by...