184 W. BLANPORD^ WESTERN INDIA. [PaRT II. 



the trap around this, and, as is the case at Mundlaisur, it is often by- 

 no means clear whether the including" rock is intrusive or not. 



Below Hamp, as in the hills north of the river described in 

 Ash breccias in Ner- Section 11, ash breccias are very abundant amongst 



budda below Hamp. .1 ■, j • j. r • -n ii i • 



^ the rocks exposed m the river, rrom these having 



been cut away by the river's action, fresher sections, exhibiting the 

 structure of the rock, are to be seen than are generally exposed on hill 

 sides. One form consists of a very fine green matrix with white 

 crystalline specks. It contains brown and purple fragments so irregularly 

 mixed that they frequently look as if they had been half fused into the 

 mass. Other fragments are vesicular. Some have evidently originally 

 been pumice, the vesicles now being, in some cases at least, filled with agate. 

 In some of the light green breccias the matrix is darker in colour 

 than many of the enclosed fragments, the latter being of a light 

 pistachio green, very compact and earthy in general, though occasionally 

 vesicular. Many of these fragments are of considerable size, often 3 or 

 3 feet in diameter. The colours vary much in patches, and may be due, 

 in great measure, to chemical changes of subsequent date to the consoli- 

 dation of the rock. 



Close to Gudhir, a brecciated calcareous vein like those so numerous 

 Brecclated calcareous ^^^1' Burwanee crosses the river. It is, as usual, 

 vein rxear Gudhir. ^^^^i^ calcareous, partly silicious. The silicious 



portion is, to all appearance, the older; it is crushed and brecciated and 

 then recemented by a calcareous matrix. It has the same strike as the 

 Burwanee veins, and the trap dykes of Rajpeepla, &c., viz., east-20° — 30°- 

 north. 



It is unnecessary to enter into farther details concerning the trap 

 area. The cretaceous rocks of the Deva valley, however, demand some 



r, . IP notice. These are well exposed on the banks of 



Cretaceous rocks of ^ 



Deva valley. ^j^g Deva and its tributaries, on which sections of 



great thickness are seen. The sandstones, in general, are much hardened, 

 ( 346 ) 



