90 N0ETL1NG : PETROLEUM IN BURMA. 



Section No. 6 (Pl. XIV) along the poungka-daw and natsin, 



RAVINES; NORTHERN END OF THE YENANGYOUNG OIL FIELD. 

 On the western side of the anticlinal, the zone of Hippotheriiim 

 awtilopinum is found at 1,716 feet from the boundary of the map 

 and from here to the point where it is again seen on the eastern 

 side is a distance of 5,100 feet where the beds of the Yenang- 

 young stage may be seen, and right in the centre a bluish grey 

 bed is exposed, which must be considered to represent the Prome 

 stage. 



Section No. 5 (Pl. XIV) along the aungban-yo (southern 



SIDE OF THE TWINGON RESERVE). 

 This section is of interest, because the upper Prome stage 

 apparently rises here highest above sea level, occupying in the 

 shape of bluish grey shales and sandstones, about 1,320 feet in a 

 horizontal line, near the centre of the anticline. 



Section No. 4 (PL. XV) along the northern branch of 



THE BEMECHOUNG (KHUNNHITSE-YO). 

 It is quite evident that in this section the level of the top of 

 the Prome stage is less elevated above sea level than in the former 

 section, while the Yenangyoung stage shows no decrease of its 

 superficial exposure. 



Section No. 3 (Pl. XV) along the southern branch of the 



BEMECHOUNG (TOUNGLE-YO). 

 The top bed of the Prome stage is here still exposed in the 

 central part, but it will be noticed that the distance between the 

 zone of Hippotherium antilopinum on either side of the anticlinal 

 has decreased to about 4,400 feet. 



Section No. 2 (Pl. XV) across minlindoung to yedwin- 



AING-YO. 



In this section the Prome stage has entirely disappeared ; the 



Yenangyoung stage is badly exposed in the centre, but we see 



that the zone of Hippotherium antilopinu?n forms a continuous 



layer interrupted by erosion at two localities only, stretching 



( 136 ) 



