MEMOIRS 



OF 



THE GEOLOGICAL SURVEY OF INDIA. 



Geology of the Son Valley in the Rewah State 

 and of parts of the adjoining districts of 

 Jabalpur AND Mirzapur, by R. D. Oldham, Super- 

 intendent, Geological Survey of India, P. N. Datta* 

 Deputy Superintendent, Geological Survey of India, 

 and E. Vredenburg, Assistant Superintendent, Geo* 

 logical Survey of India. 



Chapter I.— INTRODUCTION, 

 (R. D. Oldham.) 

 The area with which the following report is primarily concerned 

 is that portion of Rewah territory which lies 



Area dealt with. ■ * 



south of the Kaimur scarp, forming a strip 

 of ground about 25 miles broad, and bounded by the British districts 

 of Jabalpur and Mirzapur on the west and east respectively. Some 

 references to it will be found in Mr. Mallet's Vindhyan Memoir, 

 but these were based solely on two rapid traverses by Mr. H. B. 

 Medlicott from east to west of the tract comprised fn Rewah 

 territory. 



Of the country east and west of Rewah there are old surveys, 

 „. . ... made by various members of the Geological 



History of the survey. ° 



Survey previous to 1873, but the survey of the 



part comprised in the Rewah State was first undertaken in 1803 by 



Mr. T. H. Hughes. Owing to other demands on the survey a 



number of different officers have been detailed for work in Rewah, 



B ( I ) 



