ABUR— ALBAKA. 15 



Abur beds.— Named by R. D. Oldham {Rec, Geol. Surv., Ind., 

 XIX. 159, 1886) from a village (27° 5'; 70° 37') north-west 

 of Jaisalmer. They are the highest of the Jurassic rocks in Jaisal- 

 mer, and include the bed referred to by W. T. Blanford 

 {Rec., Geol. Surv.. Ind.. X. 16, 1877) as " the ammonite-bed 

 of Kuchri." 



Ajabgarh series.- — One of the five sub-divisions of the Aravalli 

 system recognised by C. A. Hacket {Rec, Geol. Sun., Ind., 

 X, 85, 1877) in Alwar State. Later work by Hacket inclined 

 him to regard the Ajabgarh and associated Mandan series to 

 be really equivalent to the Kaialo series, which he had placed 

 at the base of the Aravallis {Rec, Geol. Surv., Ind., XIV, 

 281, 1881). Recent work by A. M. Heron (Director's General 

 Report, Rec, Geol Surv., Ind.. XL, 114, 1910, and XLI, 80, 

 1911) tends to confirm Hacket's original conclusion regarding 

 the position of the Ajabgarh series in the Aravalli succession. 



Akauktaung Stage. — Name given by M. Stuart (Director's General 

 Report, Rec, Geol. Svrv., Ind., XLI, 79, 1911, and XLI, 

 243, 244) to the lower marine beds included by him in the 

 Irrawaddy system and lying between an unconformity in 

 Lower Burma above the Kama clays and the " red bed " 

 of Upper Burma, thus including beds regarded by F. Noet- 

 ling as part of the Pegu system. The beds are regarded as 

 about Burdigalian (Lower Hinglaj) in age. Name from the Akauk- 

 taung hills in Henzada district. In previous publications 

 these beds are referred to as " Marine beds of the Irrawaddy 

 series-"— (See Rec, Geol Surv., Ind., XXXVIII, 266, 274, 

 etc., 1910.) 



Albaka beds. — The upper division of the Pakhal series in the 

 Godavari valley, the Pakhals being regarded as an extension 

 northwards of the Cuddapahs. Named by W. Kmg*(Mem., Geol. 

 Surv., Ind., XVIII, 211, 1881) from the town of Albaka 

 (18° 13' ; 80° 44') on the left bank of the Godavari river. In 

 the typical area the Albaka series consists of two well-marked 

 members, a lower slaty stage, with some arenaceous and 

 limestone beds, and an upper, more arenaceous, series of beds. 

 They correspond approximately to the Nallamalli series in the 

 Cuddapah system. 



