This most abundant type of sedimentary rock is often found associated with layers of limestone and sandstone, and can metamorphose to produce slate.
Deposits of this rock can be commercially important as raw material for pyrolysis if they contain enough of the bituminous material kerogen. The "Bright Angel" stratum of the Grand Canyon consists of the non oil-bearing variety of this rock, which typically forms in quiescent marine environments from deposits of mud and silt. This most abundant type of sedimentary rock is often found associated with layers of limestone and sandstone, and can metamorphose to produce slate. FTP, name this rock which forms a deposit full of fossils in Yoho Park, British Columbia, named for nearby Mt. Burgess.
Deposits of this rock can be commercially important as raw material for pyrolysis if they contain enough of the bituminous material kerogen.
shale (accept "oil shale" before "Bright Angel" is read)