Chap. II] the Himalayan series. 43 



appearance of the crystalline rocks we found on that side an apparently regular succession 



of rocks answering to the general characters of the Infra-Bliui series ; on the east, however, 



within a few miles of the summit, we find that limestone 

 Limestone. . it.it-.-ii/- 



becomes a prominent rock. Below Baluk, far up one of the 



gorges of the Suinj, there is a dark, carbonaceous, and schistose limestone, dipping in 



under the schists of the ridge. It is underlaid by sub-schistose slates, and these by a great 



thickness of massive, compact, and often cherty, limestone. Locally this rock exhibits much 



dislocation and twisting, in consequence of which, and of its generally small inclination, 



it appears low down all along the valley of the Suinj, and in the Tons about its confluence 



with the Suinj. The same limestone reaches up on the east of the Tons to form the lofty 



ridge of Deobun. At many places along the Tons and the Suinj 

 Deobun ridge. . . 



the limestone is seen to be underlaid by brown, crumbling, clay 



slate, and other varieties of similar rocks. It is in these strata that the rich veins of galena 



occur at Oniar on the Tons, a few miles below the confluence of this river with the Suinj. 



An essential point in the discussion of the district of the Choris that of 



the identity or the distinctness of the great limestone 

 Suinj and Krol rocks. 



formations of the Suinj valley and of the Krol. 

 As bearing upon this question, I will indicate the possible continuity of 

 the two rocks. The great spurs which radiate from the Chor are cut 

 off on the south-west and south by the remarkably straight valley of the 

 Giri. On the opposite side of this valley runs the equally straight, longi- 

 tudinal range of limestone. The synclinal form of 

 Lower valley of Giri. . , 



the ridge is maintained throughout, though locally 



the rocks are greatly disturbed. In crossing the ridge from Mypur on 

 the south to the confluence of the Palar and Giri, all the members of the 

 Krol group are easily recognized. At the base, in the Giri, the Blini 

 limestone occurs typically. The great upthrow to the north of the river 

 brings in the same series of grits and slates as described south of Keari ; 

 for some miles up the Palar there is an unbroken section of these slates, 

 showing a varying dip to the north-north-east. The great faulted anticlinal 

 of Kundah Ghat, to which the remarkable features just described are due, 

 after continuing so steadily in a south 40° east direction for about thirty- 

 five miles, down the valley of the Giri to its con- 

 End of Giri fault. 



fluence with the Palar, at this point becomes 



variously split up ; and the limestone range, which it had so strictly 



