country rock

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country rock

[¦kən·trē ′räk]
(geology)
Rock that surrounds and is penetrated by mineral veins.
Rock that surrounds and is invaded by an igneous intrusion.
References in periodicals archive ?
The kimberlites occur as distinct geophysical anomalies in the carbonate country rocks.
Crater facies material has been identified in some of the kimberlites, which occur as distinct geophysical anomalies in the carbonate country rocks.
There is abundant evidence that reaction between the magma and sulfur-bearing country rocks has played a role in sulfide formation.

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