68 HOLLAND AND TIPPER : INDIAN GEOLOGICAL TERMINOLOGY. 



from the river which flows near and over the series. Composed 

 of— 



(c) Srisailam quartzites ~) 



(b) Kolarnnala slates about 2,000 feet. 



(a) Irlakonda quartzites ) 



Kodurite series.— Named by L. L. Fermor (Rec. Geol. Surv. Ind., 

 XXXV, 22, 1907 and Mem. Geol. Surv. Ind., XXXVIII, 243, 

 1909) from Kodur (18° 16' ; 83° 37') in the Vizianagram State. The 

 koduiites are associated with the Archaean gneisses and schists, 

 and are supposed to be igneous in origin, probably later in age 

 than the khondalite series (q. v.). They vary in composition 

 from acid (quartz-ortkoclase rock) through basic (kodurite pro- 

 per) to ultra-basic (spandite-rock and manganese pyroxenites). 

 Kodurite itself is composed of potash-felspar, spandite (a garnet 

 intermediate between spessartite and andradite) and apatite. 

 By chemical alteration rocks of the kodurite series have yielded 

 lithomarges, chert, ochres and workable manganese-ores. They 

 are developed largely in the Vizagapatam district of the Madras 

 Presidency. 



KoiUKlintla limestones.— The limestones conformably underlying 

 the Nandyal shales and with them forming the uppermost 

 stage of the Kurnool series. Named by W. King {Mem. Geol. 

 Surv. Ind., VIII, 45, 1872) from the village of Koil-Kuntla (15° 

 14' ; 78° 23') in the Kurnool district. 



Kojak shales. — Term applied by C. L. Griesbach (Mem. Geol. Surv. 

 Ind., XVIII, 7, 32, 33, 1881) to a .series of generally unfos- 

 siliferous greenish shales and sandstones typically exposed on 

 the Kojak pass over the Kojak (Khwaja) Amran range separat- 

 ing Baluchistan from Afghanistan, and also in the Ghaziaband 

 range where they were called for some time Karuak beds, but 

 this term was merged in the former. Griesbach from their 

 position considered them as the flysch facies of the Ranikot 

 beds of Sind. Later (Rec. Geol. Surv. Ind., XVIII, 59, 1884) 

 these same beds are correlated with a set of lithologically similar 

 beds occurring below the Upper Cretaceous of the Sulaiman 

 range. R. D. Oldham (Manual, Geol. Ind., 2nd edition, 142, 

 143, 1893) from lithological resemblance refers them to Carbon- 

 Trias along with other unfossiliferous rocks, with a warning 

 that they may prove to be much younger. E. Vredenburg 



