MEMOIRS 



OF 



THE GEOLOGICAL SURVEY OF INDIA 



The Geology and Ore Deposits of the Tavoy 

 District. By J. Coggin Brown, O.B.E., D.Sc, 



Superintendent, and A. M. Heron, D.Sc, Officiating 

 Superintendent, Geological Survey of India. (With 

 Plates 18 to 2j.) 



PART I. 



CHAPTER I. 



INTRODUCTION. 



The Tavoy district is in the Tenasserim Division of Burma, 

 lying between 13° 16' and 15° 6' N. and 97° 46' and 99° 12' E., 

 with an area of 5,308 square miles. On the north lies Amherst 

 District, on the south Mergui, on the east Siam, and on the west 

 the Bay of Bengal. It is a rugged tract, 150 miles long and 60 

 miles broad at its widest part, built up entirely of mountains, save 

 for the cultivated basin of the Tavoy river and a narrow strip along 

 the sea coast. The mountain ranges run generally north and south 

 and are covered with dense tropical forest of tall evergreen trees 

 and heavy undergrowth ; where this has been cleared luxuriant 

 bamboo jungle takes its place. 



The climate is on the whole a pleasant one, except for its 

 humidity, and the intense heat of the hot season is tempered by 

 sea breezes. During the cold season the thermometer at midday 

 scarcely ever reaches 92° in the shade and occasionally in the early 

 morning falls as low as 57°. Between December and February 

 dense fogs prevail in the mornings, but do not continue above 

 about 2,000 feet. In March and April there are occasional squalls 



W 



