232 WYNNE : GEOLOGY OF KTJTCH. [PART II. 



shale band, having large concretionary masses of lavender ashy looking 

 clay together with red earthy and splintery lateritic beds. 



The yellow sandstone is speckled with paler yellow and crossed by 

 red hsematitic strings ; its stratification oblique or false bedded to an 

 estremcj and the colouring of the whole place most brilliant, — purple, red, 

 and yellow. This is close to the junction of the sub-nummulitic group, 

 and many or all of these highly coloured rocks may belong to them, but 

 some strongly resemble the upper Jurassic sandstones. All appear to 

 dip at a low angle westward. Resting nearly horizontally on these 

 beds is a thick lateritic block-breccia with concretionary structure wea- 

 thering into fantastic forms. It has white breceiated earthy fragments 

 in a red paste, and quite resembles a rock in the same position at Mhurr 

 (to the south-south-east), except that it contains ferruginous instead of 

 trap nodules. In continuation with this breccia the basal part of the 

 sub-nummulitic group towards the south-east is formed of strong red 

 clayey laterites associated with irregular lavender earthy beds, appa- 

 rently just over or in its upper part, and underlying reddish brown shales 

 containing quantities of gypsum. 



The nummulitic group here extends to a width of two miles, 

 but the ground is much obscured by sub-recent concrete and superficial 

 accumulation consisting largely of Jurassic debris. 



la this neighbourhood close to the laterite zone is a single 



steep hill of close porphyritic basaltic trap, about 

 Trap hill. r. • , • , , 



100 feet in height, almost surrounded by a softer 



weathered or decomposed looking variety with enclosed lumps of . basalt. 



On its south-west side the softer trap is indescribably mixed with the 

 sub-nummulitic rocks, a rubbly ferruginous concretionary trap ramify- 

 ing among the white clays and vesicular ferruginous beds. The trap 

 of this hill is believed to be at least in part intrusive, while the softer 

 portion may or may not have been ejected here. 

 ( 232 ) 



