INTRODUCTION. 



Provisional Table of the Igneous and Sedimentary rocks of India — contd. 

 (H. J. Carter, 1854.) 



Secondary 



VI. 



Cretaceous 



White Limestone, Arabia and 

 Sinde ? (1,400 feet ?). 



Upper Greensand and Gault 

 (Albien, D'Orbigny), Tri- 

 chinopoly, and Verdachel- 

 lum. 



Lower Greensand (Neocornien, 

 D'Orbigny), Pondicherry. 



Primary 





r Diamond Conglomerate ? 



(Trappean Effu- 





sions ?) 





Punna Sandstone 



Eruption of 

 Felspathic and 

 Hornblendic 





Shales. 



Rocks. 



< 



Limestone. 

 Coal. 





V. 







Oolitic 



Kattra Shales Cutch. 



Pondicherry. 







Tara Sandstone. (Old Red ? 



III. 





1 McClelland.) 





IV. 







Cambrian and 



/Transition Gneiss, with niica- 





Silurian. 



l ceous and hornblende 





(McClelland.) 



J Schistose beds. 



j Newer Clay Slate, with quart- 



/ zose and steatitic Sandstone 







\ beds .... 



Eruption of 

 Felspathic 

 Rocks. 



II. 







Metamorphic 



Gneiss. Mica Schiste. Horn- 





Strata. 



blende Schiste. Clay-slate. 



I. 





Granular Limestone . 



Primitive Pluto- 

 nic Rocks. 



In his explanation of a general geological map of India, G. B. 

 Greenough (Report, Brit. Assoc., 24th Meeting, Liverpool, 1854) 

 referred to the " prodigious quantity of plutonic rock, which occu- 

 pies both the northern and southern portions of India " as the 

 product of many epochs. He consequently did not separate an 

 older fundamental complex of crystalline rocks as distinct from the 

 sedimentary systems. The latter he classified as follows : — 



Post-Tertiary, including regur, or black cotton soil ; kankar, or 

 concretionary calcareous material ; lateritc and beds of black clay 



