III.—Reversed Faults in Bedded Slates

Abstract

If it be an established rule, in coal-mining districts, that the hade of a fault is to the downthrow, it is an equally undeniable fact, that the surfaces of bedded slates, as a rule, exhibit only faults which hade to the upthrow. In suggesting a possible explanation of this phenomenon, I shall allude to the latter as reversed, and the former as direct faults.