16 HOLLAND AND TIPPER : INDIAN GEOLOGICAL TERMINOLOGY. 



Allagiri stage.— E, B. Foote (Mem. Geol. Surv., hid., XX, 11, 1883) 

 divided the crystalline rocks of the Madura district into six divisions 

 ('■' groups ") as follows : — 



6. The upper granular quartz rock— Allagiri group. 

 5. The upper granitoid gneiss — Melur group. 



4. The middle granular quartz rock — Nagamalai group. 



3. The middle, granitoid gneiss — Sikandarmalai group. 



2. The lower granular quartz rock — Kokulam group. 

 1. The lower granitoid gneiss — Tirumangalam group. 



Almod beds. — Not defined as a series by H. B. Medlicott in Mem., 

 Geol. Surv.. hid., X, part 2, 27, though referred to in the 

 Manual, 1st Ed., 134, 1879. They are the uppermost 

 beds of the Lower Gondwanas in the Satpura range, consist- 

 ing of sandstones with a few carbonaceous shales. They 

 possibly represent the Panchets of Bengal. Almod (22° 23'; 

 78° 26') is a village at the south base of the Pachmarhi escarpment. 



Alveolina limestone. — C. L. Griesbach (Mem., Geol. Surv., Ind., 

 XVIII, 9, 22, 1881) used this term for the lowest of his 

 three sub-divisions of the Eocene strata in Baluchistan, the beds 

 regarded as next higher being correlated by mistake with the 

 Ranikot series of Sind. The corresponding Alveolina limestone 

 which was noticed by W. T. Blanford in 1867 (Mem., Geol. 

 Surv., Ind., VI, 6) was afterwards grouped by the same author 

 (Rec, Geol. Surv., Ind., IX, 13, 1876) with his Kirthar series, 

 but F. Noetling . (Gentr. fur Min., 1903, 521) separated this 

 and associated beds under the name of Laki, placing the 

 series between the Ranikot and Kirthar, with an age approxi- 

 mately corresponding to the Lower Lutetian of Europe (E. 

 Vreclenburg, Rec., Geol. Surv., Ind., XXXIV, 86, 182, 1906). 



Alwar group. — Proposed first as a division of the Aravalli series by 

 C. A. Hacket (Rec, Geol Surv., Ind., X, 85, 1877) from the 

 town (27° 34' ; 76° 39') and state of that name in Rajputana. 

 Afterwards, Hacket (Rec, Geol. Surv., Ind., XIV, 281, 1881) 

 separated the Alwar quartettes from the Aravalli system and 

 included them in the (new) Delhi system. 

 The Alwar quartzites in the Biana hills include — 



5. Wer quartzites and black slaty shales. 



4. Damdama quartzites and conglomerate. 



3. Biana white quartzite and conglomerate.. 



