42 CRETACEOUS ROCKS OF S. INDIA. [PaRT II. § 1. 



pale brown micaceous shales, with bauds of grey and brown (ferrugi- 

 nous) sands everywhere form the bulk of the beds, and their prevailing 

 grey tone contrasts strongly with the bright yellow ochreous tints of the 

 Cretaceous rocks which succeed them. It Avould be tedious, as it is 

 imnecessary, to enter into a detailed description of each separate 

 locality, and I shall content myself with pointing out one or two of 

 the more interesting occurrences, referring the reader to the map for 

 the facts of the position and locality of such as offer no special 

 peculiarity. 



On the opposite side of the regur-covered ridge to the East of Terany 

 tank, a little ravine exposes the gneiss, plant-beds, 



Junction of gneiss, 



Plant-beds, and Ootatoor and Ootatoor clays in noteworthy juxtaposition. 

 Group. 



A promontory of gneiss here advances more than 



a mile into the Cretaceous rocks, and terminates in the bank of the 

 ravine, in a steep rocky angle which, possibly at one period, formed a 

 little headland in the Cretaceous sea. Its partially denuded face slopes 

 down at an angle of about 45°, and on it rest, Avith undisturbed bedding, 

 the plant-beds and the Ootatoor clays ; the former on the North, the 

 latter on the South face. The plant-beds are the usual grey micaceous 

 shales, and contain one or two large blocks of gneiss, but there is no regular 

 bed of coarse conglomerate. These beds dip at a high angle, the lowest 

 laminse conforming to the inclined surface of the gneiss ; but at the dis- 

 tance of a few yards the angle diminishes to not more than 8° or 10°. 

 It would seem probable, the plant shales having been originally tranquilly 

 deposited around the little headland, that, during the period of denuda- 

 tion that intervened previous to the deposition of the Ootatoor beds, all 

 to the south of the gneiss promontory had been carried away, while 

 those beds to the north had been preserved from destruction by the 

 hard projecting mass of gneiss. Some of the lower beds of the Ootatoor 

 Group close by are full of little angular fragments of the plant 

 shale. 



