1841.] Capt. Hutto-ris Geological Report. 203 



occasional bed of porphyritic gneiss, until we reach Rampore, half a mile 

 beyond which a fine white granular quartz occurs, underlying mica slate. 



These strata dip strongly to the N. E., and are seen on either side of the 

 river, by which they appear to have been transversely divided, the lower 

 end dipping down on the right bank, while the upper portion forms a high 

 mountain on the left. 



I say these strata have been apparently divided by the Sutledge, which 

 now flows through them, because such in reality has not been the case ; 

 but the bed of the river lying through them, is entirely attributable to the 

 disruption of the strata at this point having formed a fitting channel for 

 the waters to escape through to the plains. 



(See plate) — Fig. 1. 

 1.1. Mica Slate. 2. 2. Granular Quartz. 3. Bed of Sutledge. 



The surface of this quartz rock takes a yellowish rusty hue when 

 exposed to the weather, but when freshly fractured, it is of a pure white, 

 somewhat resembling Carrara marble in appearance, but of a coarser 

 texture. 



Onwards from Rampore, the mica schist is seen in several varieties, 

 sometimes appearing to be composed entirely of mica, at others containing 

 a predominance of quartz ; in these cases the strata are either soft and 

 crumbling, from the mica scaling off, or very hard and flinty, from the 

 quantity of quartz. 



Silvery mica passing into chlorite schist is abundant near Goura, and from 

 its soapy and decomposing nature, the whole rock has in many places slipt 

 away altogether, leaving a constantly decomposing cliff, from which in wet 

 weather large masses are constantly falling. 



Further on, the mica is seen to contain numerous small crystals of 

 hornblende, which cause it to pass gradually into hornblende schists. 

 Garnets of small size occur occasionally imbedded in the mica, which 

 also contains masses of white quartz, in which beautiful crystals of cyanite 

 are interspersed, varying in shade from pale sea green to bright blue. 



The characteristic rocks, however, from Kotgurh to Sarahun are mica 

 and hornblende slates, frequently alternating with each other, and imbed- 

 ding blocks of porphyritic gneiss and white quartz. 



From Sarahun the gneiss begins to shew itself as the prevailing rock, 

 and occurs both common, red, and porphyritic ; — mica slate and hornblende 

 are also frequent, and when they come in contact, the mica often becomes 

 jet black. 



