Outcroppings were very rare, as the veins were covered with loose wash, and this accounted for the late opening of the field.
When the rocks are concealed by detrital material he looks for outcroppings on steep hillsides, on the crests of hills or ridges, in the beds of streams, in landslides, in the roots of overturned trees, and in wells, quarries, roadcuttings and other excavations.
Thereafter its development was rapid, and the discovery of outcroppings throughout the central and southern parts of the state gave evidence of the existence of great bodies of the mineral.
Lignitic dial was discovered on or near the coast of Coos Bay as early as 1855, and this is still the only productive coalfield within the state, although there are outcroppings of the mineral all along the Coast Range N.
How would you define outcroppings? Add your definition here.