Reviews — Geological Survey of India. 171 



II. — On the ViNDnvAN Series, as Exhibited in the Noetu- 

 Wkstern and Central Provinces of India. 



By FiiED. R. Mallet, F.G.S. 

 [Memoirs of the Geological Survey of India. Vol. vii., Part i., 1869.] 



THE district described in this Memoir comprises a largo area, 

 including the greater part of Bundelkund, in size not greatly 

 inferior to England. 



Besides his own work, the author combines the work and results 

 of his colleagues, Messrs. H. B. and J. G. Medlicott, C. A. Ilacket, 

 W. L. Wilson, and W. T. Blanford. The formations noticed in the 

 area, and coloured on an excellent lithographic map — (scale 32 miles 

 to 1 inch) , are as follows : — 

 Alluvium. 

 Malva Trap. 

 Intertrappean and Bagh Beds. 



• / Upper Bundair 650 to 2,000ft. in thickness. 



^ ^ i Lower Bundair 500 to 1,500ft. 



gf^ I Upper Kewah 300 to 1,000ft. 



P.g ^ Lower Eewah 450ft. „ 



> VKymore 1,300ft. 



Lower Yindhyan 2,000ft. „ 



Quartzite Series. 

 Gwalior Series. 

 Bijawur and Slate Series. 

 Gneiss. 

 The author first gives a summary of what has been done by 

 previous observers in the same field. 



Physical Features. — He then describes the Physical Geography of 

 the district. The area occupied by the Yindhyan rocks, especially 

 in their eastern extension, is one well marked from the surrounding- 

 country, both by the greater general elevation of its plateau, and the 

 clearly cut escarpments by which it is almost everywhere bounded. 

 The district is naturally divisible into three so-called table-lands, 

 varying in elevation from 500 to 1,500 feet,^ each of which has for 

 its floor one of the three grand sandstones of the Upper Yindhyan 

 series, by the names of which, therefore — Kymore, Eewah, and 

 Bundair — the table-lands themselves may be conveniently dis- 

 tinguished. 



The Lower Yindhyan formation which skirts these table-lands 

 having been subjected to many disturbances, and subsequent denu- 

 dation, presents diversified features. While among the schistose 

 rocks which have suffered greater disturbance, and in which there is 

 greater contrast of material, the features are more varied. 



The Trappean area presents much diversity in aspect. Plains, 

 more or less level as a whole, in some parts are covered with broad 

 spreads of " cotton soil," where wheat is grown in immense 



^ The highest point in the area is Kalumur, a Trappean hill rising from the Bundar 

 tahle-land 2,544 feet above the sea-level. 



