Related Clues:

• Form of rock is identified in 'School's Out' ultimately
• Cancel Messiah's run following introduction of Superstar's layered rock
• Around church is Peter perhaps seen as Rock?
• Type of soft rock
• Soft rock; heals (anag.)
• Oil-rich rock
• Mineral layer involved in fracking
• Something settled long ago?
• Easily-split sedimentary rock
• Rock husband during auction
• First to follow school for rock
• Flagstone material
• Small well in rock
• Hardly hard rock?
• Greek characters in stone and rock