SUMMARY. 



SI 



Burma, but are associated in some manner not yet elucidated Avith 

 Palaeozoic sediments and may possibly be entirely of post-Cambrian 

 age. These are overlain unconformably by a calcareous group which 

 represents partly the Productus Limestone of the Salt Range and partly 

 the Trias (Lilang system and Para stage) of the Himalayan marine 

 province.. I call this the Khingil series. It is largely developed between 

 the Kabul plain and Jagdallak, whence it extends northwards across the 

 Kabul river towards Kokistan. From the neighbourhood of Khurd 

 Kabul it may extend south-westwards to Kharwar and the Shutar- 

 gardan, and south-eastwards into Tezin. The Productus Limestone of 

 the Bazar valley is a link between Eastern Afghanistan and the Salt 

 Range, and it is possible that the massive limestone of the Khyber 

 Pass may also represent the Khingil series. 



The stratigraphical relations of the older parts of the northern 

 facies are very obscure, but it appears to begin with the Kalu series, a 

 more or less schistose group of clastic rocks derived chiefly from coarse 

 sediments. This is followed by the hematite and limestone (probably 

 Devonian) of the Hajigak Kotal. Above these are slates and quartzited 

 overlain by limestone containing many Fmulince in the upper beds. The 

 two latter formations represent the Upper Carboniferous, and the Per- 

 mian, systems. The Fusulina limestone is covered unconformably by the 

 volcanic Doab series, which is probably partly Triassic and partly 

 Jurassic ; it passes up into the Saighan series, a freshwater group of 

 shale, grit and conglomerate with some coal-seams. This is overlain by 

 the Red Grit series, which is of Lower Cretaceous age. Cretaceous lime- 

 stone, dating from the great cenomanian transgression, covers the Red 

 Grit series and all older formations ; it passes up into shales svith 

 gypsum which are tentatively referred to the eocene. 



The Lower Tertiary and older beds are overlain unconformably by 

 (?) Upper Tertiary conglomerates in the northern districts and by 

 typical Siwaliks in the eastern. A group of shale and conglomerate, with 

 a few small patches and thin streaks of impure coal, fills the Ghorband 

 valley between Siah-gird and Parsa and may perhaps be oil Middle 

 Tertiarv age, but no fossils have been obtained from it. 



G 



