A toolbox for computing pebble shape and roundness indexes: experimental tests and recommendations for future applications.

Mathieu Cassel, Ecole Normale Supérieure Lyon, Lyon, France, Hervé Piegay, CNRS, Paris Cedex 16, France and Jerome Lave, CRPG Centre de Recherches Pétrographiques et Géochimiques, Vandoeuvre-Les-Nancy, France