1. plural of caprock: a hard layer of rock that overlies softer rock or sediment, often forming the top of a mesa or plateau
Usage: geology

Examples

• The caprocks protected the underlying sandstone from erosion.
• Geologists studied the caprocks to understand the area’s formation.
• The mesa’s distinctive shape was created by resistant caprocks.
• Oil deposits were often found beneath the caprocks.
• The caprocks formed natural barriers to weathering processes.
• Ancient caprocks revealed the region’s geological history.