78 



polish, exhibiting finely the irregular reticulated structure. 

 No fossils have been observed (dendritical moss-like figures 

 cover, more or less profusely, the cleavage planes) . The thick- 

 ness of the stratum is very considerable, but has not been 

 ascertained numerically. Dip 59^ degress easterly ; strike N., 

 8 degrees E. 



The costeening pits of the Parara Mine reveal the upper 

 portion of grey Micaceous Slates, extending for several 

 hundred yards E.W., otherwise concealed by the surface 

 deposits. Dip, 59i degrees to 71 degrees easterly ; apparent 

 strike, ~N., 5 degrees W. A dark talcose schist occurs iu the 

 talus of the same mine. (Figs. 1 and 2.) 



The Micaceous Slate is succeed by a dark green Chloritic 

 (or talcose) and Hornblendic schists, several hundred feet 

 thick, with an increasing dip of about 73 degrees easterly 

 average ; strike nearly N.S. (Plan 2, section 3.) 



These schists directly abut upon a coarse porphyroid granite. 

 (figs. 1 and 2.) The component, whitish or red felspar, is greatly 

 in excess of the white or smoky quartz. Mica is sparingly 

 disseminated through the mass in lamina of medium size, while 

 black tourmaline crystals intermix with the whole. The 

 character of the granite is intrusive, alternating with Mica 

 Slates and Hornblende schists as far as I could trace it — that 

 is about two miles — forming dykes from less than a yard to 

 several hundred feet. To judge by a shrub, Melaleuca uncinata, 

 I only observed growing on granite soils, the granite extends 

 to within about two miles of Maitland, i.e., about ten 

 miles E.W., but is hidden by the surface clay and travertine. 

 Two miles south of Muloowurtie Point, at Hart's Mine, it 

 forms the foot of the Coast Cliff, consisting there almost of 

 pure red felspar. 



The following synopsis of the rocks observed represents my 

 idea of their succession in time : — 



Newer Tertiarv ^ 2 ' Limestone concretions (on lower levels). 



' ' •> ) 3. Travertine (on higher levels). 



V. 4. Clays and Gravels. 



C 5. Ardrossan Clays and Sands. 



Older Tertiary -j 6. Turritella G-rits. 



( 7. Muloowurtie Clays. 



C 8. Ardrossan Sandstone. 



t , b-"i • j 9' Parara Limestone (fossiliferous). 



J 10. White and yellow unfossiliferous sili- 



V cious limestone. 



