MEMOIRS 



OF THE 



GEOLOGICAL SURVEY OF INDIA. 



Report on the Geology of parts of Manipur and the Naga Hills, by 

 R. D. Oldham, A.R.S.M.j Geological Survey of India. 



Of the geology of the country described in the following pages, com- 

 prising an area of some 1,800 square miles situat- 

 ed partly in the Tangkul-Naga hills, to the east 

 of Manipur, the northern portion of the valley of Manipur and the 

 hills inhabited by the Angami Nagas, together with the routes connect- 

 ing those areas with each other, and the alluvial valleys of Cachar and 

 Assam respectively, it may almost be said that previous to last Novem- 

 ber nothing was known. 



2. In the ( Report on the Eastern Frontier/ by Captain R. Boileau 

 R B P b rton Pemberton, published in 1835, there are a few 



H. H. Godwin-Austen, remarks on the economic minerals of Manipur, 

 but it was not till Major (now Lieutenant-Colonel) Godwin-Austen 

 visited this tract in charge of a survey party during season 1872-73 

 that any information of scientific value was obtained. The geological 

 observations made by him were published partly in the official report 

 on the Topographical Surveys for 1872-73, and partly in a paper on the 

 evidence of past glacial action in the Naga Hills, published in the Jour- 

 nal of the Asiatic Society of Bengal, volume XLI V, pages 209 — 213. 

 Besides these published observations, he noted on a map, by shades of 

 colour, the rocks found in various localities of these hills ; this map, de- 

 posited in the Office of the Geological Survey, though fragmentary and 

 a ( 217 ) 



Memoirs of the Geological Survey of India, Vol, XIX, Pt. 4. 



