140 NOETLING: PETROLEUM IN BURMA. 



It begins about 10 miles south of Minlin-doung and runs in a 

 north-westerly direction for about 30 miles towards the village of 

 Kyoukye : from here the anticline turns somewhat towards east 

 and runs in a north-north-westerly direction via Singu, Yenangyat, 

 Pinchoung, Bondoung to the Chindwin river which it crosses east 

 of the mouth of the Patolon-choung ; its further continuation is 

 unknown to me. The total length for which the Yenangyoung 

 anticline has thus been traced amounts to about 180 miles, but it 

 must at once be stated that along this distance hitherto only three 

 localities, viz.\ — 



1. Yenangyoung, 



2. Yenangyat, 



3. Bondoung, 



have been found which yielded petroleum. Whether petroleum will 

 be found at intermediate places remains to be seen, but there are 

 certain indications of the presence of oil which serve as a guide for 

 further research. The Yenangyoung anticlinal begins as a very 

 flat arch south of Minlin-doung, but the dip increases and soon the arch 

 becomes more and more pointed till it has reached its highest develop- 

 ment within the limits of the Yenangyoung oilfield. Further toward 

 north it flattens out up to a few miles north of Kyoukye : from there 

 the arch of the anticline gradually rises, and becomes more pointed 

 till its maximum near Yenangyat has been reached. It again flattens 

 out, till it is scarcely perceptible near the village of Pinchoung, but it 

 is beyond doubt that it rises again towards Bondoung. I have not fol- 

 lowed up the Yenangyoung anticline further north than the Pinchoung, 

 but even from the little we know, some valuable inferences may be 

 drawn. I have pointed out that there exists a successive change of 

 the angle of the arch of the anticline, which from being very obtuse 

 gradually becomes acute and then again widens out. The result of 

 this change will be that the top of a given bed gradually rises above 

 a fixed level, and equally sinks back to its former level when the 

 anticlinal arch again widens out. The natural result of this is the 

 formation of a series of turtle back shaped or dome like elevations 

 1 *X> ) 



