70 SUB-HIMALAYAN ROCKS OF N. W. INDIA. [CHAP. II. 



Naini Tal corresponds structurally to Kundah Ghat. But here it is a 

 line of extensive trappean intrusion. To the north of this line it seems 

 probable a great upthrow has taken place, or else the rocks are so altered 

 as to be no longer recognizable ; they are thorough metamorphic rocks. 

 Along the heights of Sunthala and Ghagur, immediately above the 

 Samkhet valley, the schists are gneissose. 



In this schist series we are again met by the fact of a remarkable 

 decrease in the disturbance of the strata, as compared with that of the 

 outermost belt of rocks. There is a very general inclination to between 

 north and east, and at angles averaging between 30° and 50°. From the few 

 observations I made on the granitic and gneissose rocks south of Almorah, 

 there seems to me to be considerable analogy in their mode of occurrence 

 to that of the same class of rocks to the north-west. Here indeed 

 the rock is lithologically truly crystalline, a complete granite, but in its 

 mode of insertion among the schists there is the same pseudo-conforma- 

 bility, as described on the Chor and elsewhere. The rocks to the north 

 of it, and apparently resting on it, are even less metamorphic and less 

 disturbed than those to the south. 



As far as I can assert upon direct observation, the only igneous rocks 



T i m, • within our district occur among the older strata, 



Igneous rocks. Ineir ° ' 



a S e - and are thus presumably pre-nummulitic. I am 



inclined, however, to accept general evidence against this supposition. 

 The facts of the distribution of the intrusive rocks are peculiar and most 

 interesting. The occurrence of trap in the metamorphic rocks seems to 

 be rare, yet it is very frequent in what we have presumed to be strata of 

 more recent date, in the Krol group and the subjacent slaty rocks. This 

 peculiarity suggests that the trap may be cotemporaneous in these depo- 

 sits, and may have been derived from some distant source. But we find 

 no confirmation of this opinion ; the distribution of the trap in these 

 deposits is anything but constant ; it is moreover manifestly intrusive 



