80 HOLLAND AND TIPPER : INDIAN GEOLOGICAL TERMINOLOGY. 



Miliolite.— See Porebandar stone. 



M gok gneiss.— Name proposed by T. H. D. La Touche from the 

 district of that name in Upper Burma for a series of scapolite- 

 garnetiferous biotite-gneisses with bands of crystalline limestone 

 and lenticular beds of graphite. Rubies and other gems occur in 

 the limestones. The first comprehensive description particularly 

 with respect to the minerals is by C. Barrington Brown and J. W. 

 Judd (Phil. Trans. Boy. Soc, Vol. I87A, 151). La Touche 

 (Mem. Geol. Surv. Ind., XXXIX, 33, 1913) discusses the extension 

 of this series in Upper Burma and compares it with similar types 

 of the Dharwarian from the Peninsula. An Archaean age is assign- 

 ed to it. 



Mogoung (Mogaung) sands.— Name used by W. Theobald (Mem. 

 Geol. Surv. Ind., Vol. X, 260. 1873) for a varied assemblage 

 of beds of sand and shale, with silicified wood and mammalian 

 bones, and appearing to pass downward into beds containing 

 marine shells and corals. Theobald seems to have considered 

 these beds as the lower part of the Fossil Wood group or Irra- 

 waddy series and to partake to some extent of the general character 

 of the upper beds. The lower part of this division was correlated 

 by M. Stuart (Bee. Geol. Surv. Ind., XXXVIII, 267, 1909) with 

 part of his Marine Irrawaddis or Akauktaung Stage (q. v.). 



M(jng Long mica schists. — Name used by T. H. D. La Touche 

 (Mem. Geol. Surv. Ind. XXXIX, 46, 1913) for a series 

 of schists in the Northern Shan States developed to the 

 south of the Mogok gneissic area occupying the valley of the Nam- 

 pai in which is situated MongLong (22° 47'; 96° 40'), the capital of 

 the Sub-state of that name. The chief rock is an ordinary biotite 

 schist. It is the lowest division of the Tawng-peng system (q. ».). 



Morar series. — The upper of the two divisions of the Gwalior system 

 composed of shales, ribboned jasper, hornstone, limestone and 

 contemporaneous basic lavas. Named by C. A. Hacket (Bee. 

 Geol. Surv. Ind., Ill, 35, 1870) from Morar city (26° 14' ; 78° 17') 

 in Gwalior State. 



Motur stage. — Named by H. B. Medlicott (Mem. Geol. Surv. Ind., 

 X, 161, 1872) from the village (22° 17'; 78° 37') about 12 miles 

 south-south-east of Pachmarhi. This stage belongs to the Lower 

 Gondwanas intermediate between the Barakars and the Bijori 

 stage. 



