308 



GEOLOGICAL SURVEY 



Conifer ce. 



* f Palissya Indica. 

 t Do. conferta. 



* Echinostrobus expansus. 



* Araucarites cutchensis. 



Taxites— sp., found also in the 

 .Ragavapuram shales. 



Pachyphyllum sp., allied to P. 

 peregrinum. 



Details of the sections in which these fossils were collected 

 will be found in the author's memoir on the geology of 

 Madras. 20 



A considerable number of outliers, 21 most of them of very 

 small size lying a little south of the Palar river with one or 

 two larger ones further south near the high road from Madras 

 to Trichinopoly, show that there was probably a continuous 

 stretch of these Upper (xondwana rocks extending down to 

 the outliers in Trichinopoly District. To the north of the 

 Sripermatur and Sattavedu areas a similar chain of outliers 

 of various sizes extends to the Nellore and Kistna Districts 

 up to the Upper Grondwana (Hajmahal) beds discovered by 

 Mr. King in the Qodavari District. These will be referred 

 to again further on. One very remarkable feature prevailing 

 in all the many outcrops of these rocks between Trichinopoly 

 District and the north of Rajahmundry District is the total 

 absence of any carbonaceous matter. The plant remains are 

 simply impressions stained red, brown or purple by oxide of 

 iron. This total absence of carbonaceous matter is certainly 

 not a favorable indication of the possible presence of coal in 

 these plant-bearing beds. 



Certain detached blocks of gritty sandstone found loose 

 on the surface a short distance to the west and south-west of 

 the old bungalow at Sripermatur were found to contain very 



20 Memoirs of the Geological Survey of India, vol. x, part 1, 1873. 



21 All the outliers south of the Palar were surveyed by Mr. C. M. Oldham 

 in 1864. His account of them was never published, but a description of 

 them drawn up from his notes by the author will be found in the sketch of 

 the geology of South Arcot in the record of the Geological Survey of India, 

 vol. xii, 1879. 



