DESCRIPTIVE GEOLOGY: CRYSTALLINE AND METAMORPHIC ZONE. 251 



Further north-west again, beyond the little gulee just referred 

 to, the distinction between the schists and the gneissose-granite 

 becomes less marked, and we arrive among rocks with mica-schist 

 as a basis, and among which the granite in i-inch bands has been 

 injected as if under enormous pressure, and in a most complicated 

 way (see p. 68). These continue the whole way down to Lalo 

 Gulee, but vary a little in the relative importance of the different 

 rock-elements. In this direction also the strike begins to bend 

 round more to the N.N. W., until at Lalo Gulee itself, in the valley 

 of the Indus, the strike is more generally N. — S., and sometimes E. 

 of N. 



The fine bands, veins, or fingers of gneissose-granite which we 

 have met with between Sunvai and Lalo Gulee are not continued 

 towards the south-east. They would appear to die outjin a feather- 

 edge like the similar veins on the Sirun R. 



Beyond Lalo Gulee up the Indus to Deruh the strike, continues 

 N. — S. or generally with the course of the river, which it here seems 

 to have influenced. The dip of the foliation planes is W. 



The river»gravels above Lalo Gulee are washed for gold in the 

 usual native fashion common in India. 



As far as Derbund the same rocks continue, the strike varying 

 between N.N.W. and N.N.E., and the hill-sides descend towards 

 the river in huge foliation planes. Between Derbund and Phuldar 

 nothing but schists are visible, slightly garnitiferous, and ill-exposed 

 beneath the Recent gravels. 



Travelling up the Indus from Derbund, as far as Shingri in the 



. . L , Black Mountain country, our course is north- 



Sections along the J ' 



Indus R. above Der- wards. Beyond that via Kotkai and Bakrai 

 to Bimbal 1 and Dedal, the river bends like an S. 

 (beginning at the bottom). The general strike is continuously north- 

 wards sometimes to the E. and sometimes to the W. of it. The 

 rocks exposed are of the usual kind found in the crystalline and 



1 The Black Mountain names are spelled in the modern way. 



( 251 ) 



