PAINKANDA SECTIONS. 



103 



flaggy limeston 



LOWER SILURIAN. 



Dark coloured Coral limestone 



Quartzite ....... 



Silicious shales . . • . 



Limestone with shaly beds .... 



Limestone ...... 



Silicious shales ...... 



Very hard dark -coloured Encrinitic limestone with 

 Quartzite (no fossils) ..... 



Dark limestone ..... 



Quartzite with shaly partings 



Silicious shales ...... 



Concretionary limestone with quartzite beds and 



partings ...... 



Dark limestone with shaly silicious beds and dark 



ary limestone ..... 



Grey quartzite and limestone, weathering brown 

 Flaggy beds of Encrinite limestone with fossils 

 Dark limestone beds with thin partings of quartzite showing cleav 



age and traces of Encrinites . , 



Flaggy whitish quartzite, weathering brown . 

 Flaggy quartzite with beds of fossiliferous limestone 

 Greyish, drab-coloured quartzite . 

 Grey shaly quartzite with limestone partings 

 Quartzite and limestone in thin alternating beds 

 Thin beds of quartzite with fossiliferous band of shaly limestone 

 Greyish, dirty flesh-coloured quartzite with shaly partings 



Total 



blue concretion 



Thickness, 

 feet, inches. 



19 







3 



2 



o' 

 6 



9 







30 

 1 





 6 



42 







22 







1 



8 



8 







1 



5 



21 c 



1 6 



IS 4 



3 

 4 

 4 

 o 

 o 

 o 

 1 

 3 



o 

 o 

 o 

 6 

 8 



9 

 5 

 o 



204 3 



Underlying : red quartz shales (3). 



The thickness of the divisions of the silurian system of the Sila- 

 kank are therefore — 



Upper Silurian 

 Lower ,, 



Feet. 



ifi34 

 204 



Total thickness of the silurian 1,338 



Not only in this section, but in every one which I have examined 

 Continuity of palao- * n ^ e Himalayas, the palaeozoic forms a perfect 

 zoic group anc I continuous sequence of beds from the 



phyllites and quartz shales of the haimantas, to the uppermost beds 

 of the carboniferous system, varying, it is true, in lithological cha- 

 racters, but always with gradual passages between the different rocR 

 formations and without the slighest unconformity. Therefore the 

 divisions which I have distinguished in the Pethathali section must 

 not be understood to form sharp and well-defined formations, but 



( 103 ) 



