BAWAR— BETWA, 25 



Cretaceous formation in Baluchistan. It was shown by F. 

 Noetling (Pal. Ind., ser. XVI, 1, part 2) to be of Neocomian age. 

 E. Yredenburg (Sec, Geol. Surv., Ind., XXXVII, 200, 1910) 

 divides it into : — 



3. Lituola beds . . Flaggy porcellanic limestones. 



2. Park limestones . Unfossiliferous siliceous limestones. 



19. Belemnite shales . Variegated in colour but usually 



black and crowded with belenmites. 



Bellary gneiss. — Synonym suggested by W. King (Mem,, Geol. Surv., 

 Ind., XVI, 125. f.n., 1880) for the Balaghat gneiss (q.v.). King- 

 suggested that the gneiss might also be called Mysore gneiss. 

 R. B. Foote (Mem., Geol. Surv., Ind,, XXV, 28, 29, 1895) points 

 out the resemblance between the Bellary gneiss and that of 

 Bundelkhand, and he correlates with them the granitoid 

 gneisses of Mysore, the central and western taluqs of North 

 Arcot, the Baramahal division (Hosur gneiss) of Salem, the 

 :entre of Kistna, south-west of Nellore, south-east of North 

 Arcot, centre of South Arcot, south of Trichinopoly, Pudukkottai 

 State, part of Madura north of the Vaige river, and south-western 

 Tinnevelly. 



Bengal gneiss. — In describing the geology of the Khasi hills 

 T. Oldham (Mem,, Geol. Surv., Ind., I, 116, 1859) distinguished 

 two types of metamorphic rocks — " the older and more altered 

 group . . . represented by . . . alternating beds of gneiss, quart- 

 zose schists, and quartz, greatly contorted, and traversed in every 

 direction by veins of finely crystalline granite. With these are 

 also associated occasional beds of hornblendic rocks." The 

 upper group is " essentially slaty, consisting of blue and grey 

 flaky schists, with some micaceous and quartzose layers." The 

 former group was distinguished as the gneiss of " Bengal Proper," 

 while the slaty group was distinguished as " that of the 

 Sikkim -Himalaya (Darjeeling)." The term Bengal gneiss was 

 afterwards used generally for the well foliated and banded areas 

 of gneiss on the Peninsula (cj. Man. Geol. Ind., 1st Ed., 1879, 

 xviii and 17). 



Betwa series. — Term proposed by E. Vredenburg (Sec, Geol. Surv., 

 Ind,., XXXIII, 259, 1906) in a new classification of the Vindhyan 



