DELHI QUARTZITE SERIES. 



99 



together with the overlying quartzite, become merged into the 

 Aravallis round about Samalpar ? It is clear that the arrangement 

 must be most discordant and irregular, inasmuch as it presents 

 the appearance of a distinct anticline in the Delhis with a core 

 of magnesian rocks, planted down among or upon, and, as it were. 

 melting into, the Aravallis I This is obviously not the same thing as 

 finding a syncline in the Delhis in a similar position. We must leave 

 the puzzle for the present in order to describe a number of other 

 analogous sections where magnesian rocks again become visible 

 along local anticlines in the Delhi Quartzite. 



The first of these that will be described is that of the hills between 

 Other anticlines ( »f Dev Mori and Kundol a few miles further to 



magneaknrpcka .among the east, another is at Ghanta, a third m the 

 the Delhi Quartzite. i • , , , . ^ ., . ' 



big wrench of the Delhi Quartzite between 



Kokapur and Vartha, and a fourth to the south-west of Thuravas. 



In a short note in the Records (Vol. XLII, pt. 1, p. 52) I have 



Magnesian rocks be- previously sketched the main features of the 



Kundol Dl>V M ° ri Und ma Snesian rocks of the Dev Mori-Kundol area, 



with special reference to the steatite content 

 from an economic standpoint. The outcrop occurs along a little 

 valley almost enclosed by low ridges of Delhi Quartzite. These 

 coalesce round the head of the valley to the north into the 1,034 ft. 

 and 918 ft. summits, which together form the blunt nose of the 

 anticline in the Delhi Quartzite as it pitches under the Phyllites 

 lying west, north and east of it. All the above statements are 

 supported by ample exposures round about Dev Mori and in the 

 hill-slopes to the north-west of Kundol. It is clearly a parallel 

 case to the similar neighbouring positions at Venpui and Od. 



The main outcrop of the magnesian series in the heart of this 



Shape of outcrop : anticline has the surface shape of a narrow 



general composition. ellipse, about 1 mile long, and tailing off to 



the S.S.W. in a long narrow process. With 

 the exception of the uppermost layers, where the magnesian rocks 

 appear to pass up into the Delhi Quartzite, the rest of the 

 exposures (which are not numerous and generally had to be duo- 

 out) yielded chiefly talc, in the compact form of steatite. (M — -$") 

 together with a little hornblende asbestos ( 4 %). The steatites 

 apparently bedded or banded practically vertically, forming a core 

 to the anticline varying from 200 feet to 300 'feet in width or 

 thickness. 



