Caprock
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A harder or more resistant rock type overlying a weaker or less resistant rock type. countable, uncountable
"Last month, federal scientists said that the company had fallen far behind schedule because a huge rig hired to drill down about 12,000 feet, or more than two miles, on federal land had not been able to pierce surface formations called caprock."
Example
More examples"Last month, federal scientists said that the company had fallen far behind schedule because a huge rig hired to drill down about 12,000 feet, or more than two miles, on federal land had not been able to pierce surface formations called caprock."
Etymology
From cap + rock.
More for "caprock"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.