- an outcrop of a formation completely surrounded by rocks of younger age.
Origin of inlier
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for inlier
An inlier of these rocks appears in the rising ground east of Dungiven, including dark grey crystalline limestone.
Good slates are quarried at Kilmoganny, in the Silurian inlier on the Slievenaman range.
- an outcrop of rocks that is entirely surrounded by younger rocks