Definitions
There is 1 meaning of the phrase
Boulder Clay.
Boulder Clay - as a noun
Unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together
Synonyms (Exact Relations)
tillExample Sentences
"The landscape around here is covered in boulder clay."
"Archaeologists found traces of ancient animal fossils in the boulder clay."
"The heavy machinery had to dig through layers of boulder clay during construction."
"The boulder clay deposits in this region formed during the last ice age."
"The boulder clay contains a mixture of sand, silt, and clay particles."