boulder clay

English Thesaurus

1. unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together (noun.substance)

hypernym	:	dirt, soil,
definition	:	the part of the earth's surface consisting of humus and disintegrated rock (noun.substance)

derivation	:	till,
definition	:	work land as by ploughing, harrowing, and manuring, in order to make it ready for cultivation (verb.creation)

derivation	:	till,
definition	:	work land as by ploughing, harrowing, and manuring, in order to make it ready for cultivation (verb.creation)