80 



crops, follow the crest of the subordinate hills on the Northern 

 side of the Ranges. They occur at Normanville and throughout 

 the eight or nine miles which were under observation near Sellick's 

 Hill. One peculiarity of this bed is that near the surface it is 

 hard and but slightly decomposed, showing only superficial pit- 

 ting and relief lines, but at depth it is changed to a 3>-ellow 

 ochreous earth, sometimes preserving its lines of stratification, 

 and at times with the lines of bedding entirely obliterated. This 

 is the case not only in the instance referred to in the creek section 

 to the East of Sellick's Hill, but still more conspicuously in a 

 gorge 200 feet deep on the South-Western side of Mount Terrible. 

 At one place in the gorge, where there is a fine section of the 

 beds, the latter have been much broken and crushed, large blocks 

 having been turned at right angles to their natural position, the 

 very distinct and thin partings in their stratification making a 

 striking feature when thus broken and twisted. A. similar 

 occurrence of crush was noticed (probably on the same line of 

 strike) in a tabular outcrop behind the Mount Terrible farmstead; 

 large blocks, four or five feet square, were seen in juxtaposition 

 with their strata at right angles to each other. These beds (as 

 seen in the gorge referred to) are decomposed into yellow ochre 

 from a few feet from the surface to the lowest point exposed. 

 Dip 55° to 65° Westerly. 



It is seldom that so clearly defined an outcrop with distinctive 

 peculiarities can be followed for an equal distance, as is the case 

 with the beds in question. The order of succession, viz., earthy 

 shales, fossiliferous limestones, and flaggy limestones, occurs with 

 equal clearness at Normanville and on the northern flanks of the 

 Sellick's Hill ranges. So constant is this relationship of the beds 

 maintained that it was an easy matter to tell at any moment my 

 exact position on the section. With the "blue metal" outcrop- 

 ping on the one hand, and the calcareous flags with their serrated 

 edges on the other, the coralline horizon was clearly defined even 

 where temporally obscured. 



Pal.eontologica l. 



In the limited time at my disposal, in this rapid survey, but 

 little attention could be devoted to the palseontological features 

 of the rocks other than those which are visible on the weathered 

 surfaces of the stone. The calcareous series, bounded by the 

 argillaceous shales below, and the quartzites above, develop a 

 thickness at Sellick's Hill roughly estimated at 1,800 or 2,000 

 feet. The fossiliferous portions are towards the base of the series, 

 and are divided into two horizons, separated from each other by 

 earthy limestones, in which no fossil remains were seen. The 

 lower of these horizons is a very strong and comparatively pure 



