112 MEDDLEMISS: THK GEOLOGY OF IDAR STATE. 



series as displayed in Idar State is small compared with the much 



wider areas occupied by it in the neighbouring state of Dungarpur. 



As regards its lowest beds, which are interstratifiod with the 



uppermost part of the Delhi Quartzite, much 



has already been said incidentally. For the 



same reason it is unnecessary to define their boundaries since the 



lowest beds of the Phyllites coincide with the upper layers of the 



Delhi Quartzite while the upper limits of the Phyllites are unknown. 



In general terms their distribution may, however, be roughly 



indicated as occupying the following areas, 

 General distribution. ^ ^ ^ ^^ y&{] ^ q| ^ Hathmaf - riwr 



from near Pal to Kanadara. where they are well seen, and again 

 near Thuravas. Tembana Math and Janali in very imperfect and 

 scattered outcrops; (2) as developed in the gently hilly country to 

 the east of the more striking Delhi Quartzite ridges which stretch 

 from Bornali via Od, Navugam, Dev Mori. Kundol and Sangam 

 to the neighbourhood of the Ma jam river near Modasa ; and (3) 

 as seen at Meghraj and east of it in the very vide area stretch ing 

 away into Dungarpur. 



On account of the probable thinning of the Delhi Quartzite 

 _ .,, . in an easterly and south-easterly direction. 



Possibly in part con- • • 1 1 



temporan'eous with the it may be that the connection between the 

 Delhi Quartzite. phyllites and the Delhi Quartzite may even 



be more essential and significant. The latter may have thinned 

 away eastwards and south-eastwards concomitantly with a thicken- 

 ing of the Phyllites, the two being in part contemporaneous and 

 representing respectively the coarser and more arenaceous sediments 

 on the one hand, and the finer and more argillaceous on the 

 other of an— at least partially — uniform and connected set of 

 deposits. However this may be, it is necessary to give a short 

 description of the Phyllites as a separate unit in a penological 

 sense, though full justice cannot be done to the subject on account 

 of their very restricted development in this State, and that only 

 on its north-eastern and eastern fringes. No detailed account, 

 therefore, will be attempted here. 



The Phyllite Series builds as characteristic country as the Delhi 



Quartzite, but in a different souse. Instoad of 

 Surface features. , , i-.ii-n rriii 



rugged and steep little hill-ranges, as afforded by 



the latter, it yields softer and more undulating country that has been 



worn down by denudation into a perfect labyrinth of small and low 



