_:b1218421 . "There is debate on the usage of mudstone and mudrock, and some ambiguity is to be expected. Wikipedia: The terminology of \"mudstone\" is not to be confused with the Dunham classification scheme for limestones. In Dunham's classification, a mudstone is any limestone containing less than ten percent carbonate grains. Note, a siliciclastic mudstone does not deal with carbonate grains. Friedman, Sanders, and Kopaska-Merkel (1992) suggest the use of \"lime mudstone\" to avoid confusion with siliciclastic rocks."^^ . . "mudstone"^^ . "2013-10-12T14:51:19Z"^^ . "A mudstone is a clastic sedimentary rock which contains a mixture of at least one third of silt- and one third of clay-sized particles."^^ . . _:b1218421 . "pbuttigieg"^^ . _:b1218421 . "ENVO"^^ . . "ENVO:01000272"^^ . _:b1218421 .