Sedimentary rock (9)
'sedimentary rock' is the definition.
(limestone is a kind of sedimentary rock)
This is the entire clue.
(Other definitions for limestone that I've seen before include "Rock of calcium carbonate" , "Hard calcium rock" , "Mineral" , "building material" , "Caves in here perhaps" .)
'sedimentary rock' is the definition.
(sandstone is a kind of sedimentary rock)
This is the entire clue.
(Other definitions for sandstone that I've seen before include "Among the best of building materials" , "Such building material" , "Rock containing quartz grains" , "Type of sedimentary rock" .)
'sedimentary rock' is the definition.
(shale is a kind of sedimentary rock)
This is the entire clue.
(Other definitions for shale that I've seen before include "Fine pieces of stone on leash" , "Soft rock; heals (anag.)" , "Oil-rich rock" , "Type of soft rock" , "Easily split layered rock" .)