THE VALLEYS OF SOME OF THE IRISH LAKES. 155 



deeps that occur in the great east and west expanse of 

 Lough Derg. At this reach the S.S.W. and N.N.E. 

 lake valley seems to be shifted eastward nearly three 

 miles * to the entrance of Youghal Bay, from which 

 the deeps extend N.N.E. to a little south of Illaun- 

 more, where they are crossed by the north fault of 

 the Scarriff valley, which changes their bearing to 

 nearly north and south, while farther N.E. of Goose 

 Bay, the great deeps (over 70 feet) end where the 

 basin is crossed by the eastern continuation of the 

 Cloonnagro and Corra valley fault. In the north- 

 eastward of Goose Bay, the trough of the basin runs 

 nearly N.E. and S.W. to off Drominagh Point, near 

 which it crosses the fault supposed to run nearly 

 west and east from Lough Atorick ; while farther 

 north, an east and west reach, extending between 

 Cloondavaun and Terryglass bays, lies on the eastern 

 extension of the fault proved at Woodford. Still 

 farther northward, the original lake-basin extended 

 in a N.E. direction, and the relations between it and 

 the other faults in Slieve Aughta could be pointed 

 out ; but as this part is now silted up, nothing further 

 need be said about it. 



There are also other breaks that appear to come 

 into the Lough Derg basin from the S.E., as a rude 

 parallelism exists between the bearings of the 



1 Such a shift may appear enormous, but as large a shift has been 

 proved in the Maum valley, County Galway. 



