THE CENTRAL RANGE MTNES. 201 



burden of 20 to 10 feet of eluvial deposit which appears to have 

 slipped down from the hillside above it. 



The Central Range proper and Paungdaw. 



This intrusion commences as a rounded mass of granite, three 

 quarters of a mile wide, about a mile to the south-south-east of 

 Ilermvingyi. Its western boundary runs south for seven miles and 

 then swings around to the south-south-east. The eastern boundary 

 follows approximately the same direction for 12 miles and then turns 

 more to the east. As a consequence, the width of the granite belt, 

 which is only }, mile across at its constricted portion, is at least 6 

 miles, 20 miles further south. The total length of the intrusion 

 is at least 32 miles so that its average breadth is small in comparison 

 with its length. At its southern extremity the western boundary 

 swings eastwards to meet the eastern one. The intrusion forms 

 the high ridge visible from Tavoy and bears the peaks Pya Taung 

 3.57.") feet), Khat Taung (3,545 feet). Xwalabo (5,063 feet) and 

 the high massif of Southern Paungdaw which has one peak of 5,133 

 feet above sea level. Both sides of the intrusion are steep and 

 precipitous in places. With the exception of Southern Paungdaw. 

 chat is to say the portion lying south of Lat. 14°, which is still 

 imperfectly prospected and little known, practically the whole 

 of the intrusion and its surrounding contact zones are covered by 

 grants of ground held under prospecting licenses or mining leases. 

 Especially characteristic of the southern portions are the isolated 

 patches of sedimentary rocks which lie on the upper surface of the 

 granite forming the last remnants of its former covering which 

 still resist denudation. The intrusion is breached by the Paukta- 

 ing stream and fine sections of the granite are seen in its gorge. 

 This carries the main easterly road and telegraph line connect- 

 ing Tavoy with Siam. 



(a) — Mines of the Northern Section. 



The northern section of the intrusion, which we define arbitrarily 

 as the portion lying north of the Pauktaing valley, contains the 

 Taungpila and Thingandon groups of mines. 



TamgpMa. — The most important of the former is Quah Cheng 

 (Juan's Taungpila, which was opened in 1912. The mining lease 



