MEMOIRS 
OF 
THE GEOLOGICAL SURVEY OF 1NDL4. 
VOLUME XXXVI, PART 2, 
The Geology of the Provinces of Tsang and 0 in 
Central Tibet. By H. H. Hayden, B.A., B.E., F.G.S., 
Superintendent, Geological Survey of India. 
Published by order of the Government of India. 
CALCUTTA : 
SOLD AT THE OFFICE OF THE GEOLOGICAL SURVEY, 
27, Chowringhee Road. 
LONDON: MESSRS. KEGAN PAUL, TRENCH, TROBNER & CO. 
BERLIN: MESSRS. FRIEDLANDER UND ^.OHN. 
1907. 
