98 HOLLAND AND TIPPER: INDIAN GEOLOGICAL TERMINOLOGY. 



series and those of the Salt Range, that is Upper Carboniferous 

 in age. Pokaran (26° 55' ; 71° 58') is a village in Marwar 

 (Jodhpur) State. 



Pondicherry silicified wood deposit.— Beds of loose ferruginous 

 grit forming the Red Hills near Pondicherry, described by T. J. 

 Newbold (Journ. Boy. As. Soc, VIII, 240, 1844) as containing 

 abundant silicified wood, dicotyledonous and rnonocotyledonous. 

 He was disposed to regard this formation as distinct from the beds 

 including fossil-wood in association with the Deccan Trap. Very 

 probably equivalent to the Trivicary grits (q. v.). 



Poolavaindla.— See Pulivendala quartzites. 

 Poolumpett. — See Pullampet slates and limestones. 



Poonahlite.— Name given by W. H. Brooke (Phil. Mag., X, 110, 

 1831) to a zeolite from the Deccan Traps of Poona. The compo- 

 sition and character of the specimens described fall within the 

 specific limits of Gehlen and Fuehs' scolecite (skolezit). 



Porcellamc Stage.— Name used by P. N. Datta (Rec, Geol, Surv., 

 Ind., XXVIII, 145, 1895) to link up beds 3, 4 and 5, including 

 the so-called " porcellanites," recognised by F. R. Mallet (Mem., 

 Geol. Surv., Ind., VII, 28, 1869) in the Lower Vindhyans. 



Porebandar stone. — So named from the port in Kathiawar from 

 which it is shipped. For this rock H. J. Carter (Journ. Bo. Br. 

 Roy. As. Soc., III, pt. 1, 170, 1849, and V., 313, 1857 ; Geolo- 

 gical Papers on Western India, 1857, 756) proposed the name of 

 miliolite from the abundance of the foraminiferal genus Miliolina, 

 It is a fine-grained limestone consisting chiefly of foraminiferal 

 tests cemented by calcite, with a few oolitic granules and mineral 

 fragments. Its aeolian origin has been conclusively proved by 

 J. W. Evans (Quart. Journ. Geol. Soc, LVT, 1900, 559) and the 

 organic remains investigated by F. Chapman (ibid., 584). The 

 rock is essentially a coastal deposit and is well developed in Kachh, 

 Kathiawar, south-east of Arabia and the Persian Gulf region. 



Po series.— Named by H. H. Hayden (Mem., Geol. Surv., Ind., XXXVI. 

 44, 1904) from the village of Po (32° 3' ; 78° 23') in Spiti, con- 

 sisting of — 



(a) Quartzites and shale with Culm plants. 



(b) Fenestella-shales and quartzite. 



