(geology, of a stratum) To come out to the surface of the ground.
Other Word Forms
Origin of outcrop
outcropto appear on the surface
American Heritage Dictionary of the English Language, 5th Edition
Outcrop Sentence Examples
In mines that are worked from the outcrop by adits or day levels traction by locomotives driven by steam, compressed air or electricity is used to some extent.
Smaller patches of the Coal Measures appear near Tamworth and Burton, while deep shafts have been sunk in many places through the overlying Triassic strata to the coal below, thus extending the mining and manufacturing area beyond the actual outcrop of the Coal Measures.
The outcrop of beds at the surface is commonly the truncation of these curves.
The underlying geology is volcanic lava flows, which outcrop in some areas.
Veins of amethystine quartz are apt to lose their colour on the exposed outcrop.