Related Clues:

• Thin layered rock
• One source of oil
• Kind of bagel
• Not exactly hard rock?
• Stratified rock
• Mudstone
• Possible source of petroleum
• Oscar's street
• ___ noodles (Chinese dish)
• Laminated rock
• Opening remark?
• Petroleum source
• Type of oil
• Opener?
• Flavorful seed