TKEDIAN HILLS. 



2()1 



escarpment of the nuuimulitic limestone. Amon^- the lii^'hest of the 

 Jurassic beds here the following" were observed^ di[»[)ing' at G5° to north- 

 by -east : — 



Group, 



II 



No. 9. 



Feet. 



Variegated red and white sandstones ... ... 130 



Yellow clay rock ... ... ... ... 12 



Clierty compact limestone ... ... ... 150 to 200 



Soft sandstones with black shale layers, carbonaceous mark- 

 ings, and yellow partings ... ... ... 15 



Yellow brecciated limestone ... ... ... 16 



Blue shale with grey flaggy layers ... .. ... 3 



Hard calcareous sandstone and limestone, magnesian, yellow 



and crinoidal ... ... ... ... 20 



Soft white sandstone, blue-black and grey stales ... 5 



From the upper part of the above list there was room for 200 feet 

 of beds before reaching the base of the nummulitic limestone, in 

 which space only a twenty-feet band of red clay was exposed. Blocks 

 of g'rey gypseous clay or shale, probably from the lower concealed 

 nummulitic beds, layabout the ground. It is very probable that some 

 part of this section is represented in that previously given, but the 

 whole of the Jurassic group may be fairly estimated at from 550 to 

 somewhat over 600 feet. The trias formation was estimated in this 

 country at 90 or 100 feet; it is composed of dark grey or greenish shale, 

 and thin limestones as usual, the junction with the Jurassic beds in 

 another place being as follows : — 



Feet. Inches. 

 rLight-coloured purplish sandstone alternating with 

 [ dark-grey shales 



„ ^ ^ Lumpy thin limestone with shell fragments 



No. 7. Lower | ^-^ " 



PAET OF JuEAS-"! Black shale with a lenticular bed of sandstone ... 



Black shales, grey flags, and white sandstones, 

 flaggy parts with obscure plant remains 



Grey shales and flags 

 rThin limestone, shaly and flaggy with Ceratites ... 

 I Shaly and flaggy beds 



Comparing this with the foregoing sections, it will be seen that within 

 short distances these Jurassic beds are liable to a considerable amount 

 of change. Although not prominent in the ground so far described, there 



( 361 ) 



No. 9. Teiassic 



90 







9 







2 



6 



20 







20 







50 







50 







