1S4 MIDDLEMISS: GEOLOGY OF HAZARA AND BLACK MOUNTAIN. 



been easily obtained. Numerous springs of water issue along the 

 lines of these shales. 



Continuing along the road south-east of Nathia Gulee the lime 

 stone increases in importance again. Some few fine exposures 

 of massive limestone give a dip of 8o° N.W. and then 6o° S.E. and 

 S.S.E. Alternations of limestone and shale are, however, the rule, 

 the former showing lenticular-tabular, concretionary, and massive 

 varieties of dark grey colour, but weathering whitish. Fossils are 

 easily discernible, but of small size. There is also much curving of 

 the strata, with slicken-sided surfaces and infiltration veins of 

 calcite. As regards the peculiar concretionary habit of the rock 

 which I have named lenticular-tabular (and which resembles the 

 structure of the same name in the gneissose-granite), it is but natural 

 to suppose it an imperfectly concretionary one, but there are some 

 few places in which the lenticular structure seems to cut across the 

 bedding more or less. One such locality is on the road \ mile south 

 of Nathia Gulee and another i mile N.W. of that place. Hence the 

 structure may partly be due to a yielding of the rock along shear 

 planes, the concretions in the limestone being involved in the process 

 in the same way that the crystals of orthoclase in the gneissose-granite 

 have been (see p. 65). 



Continuing along the road where itjVs up the stream from Moorch- 

 poori (now the spring-head of the Murree water-supply) we pass 

 many well-bedded blocks of strata full of fossils and with vertical 

 dip, strike east-west. At Doonga Gulee more shaley beds set in. 



If instead of traversing along the road from Kalabagh to Doonga 

 Section along the we take tne west-north-west spur of Moorch- 

 Moorchpoori ridge. poori, keeping to the ridge, we shall find much 



the same sort of section as far as the thick surface soil and the under- 

 growth will allow. The ridge rises gradually in rather irregular steps 

 as the strike of the rocks, oblique with regard to the ridge, brings in 

 shales and limestone alternately. From the crest of the ridge as we 

 proceed magnificent peeps over Kashmir may be obtained between 

 the towering stems of the Paludar, wherever nature or art has made a 



( '84 ) 



