CHAKNOCKITE— CHIN: 35 



ammonite fauna is described by V. TJhlig (Pal. Ind., Ser. XV, 

 Vol. IV, fasc. 1, 2 and 3). 



Chidru beds.— Name given by W. Waagen (Pal Ind., Ser. XIII, 

 Vol. IV, Part 2, 241, 1891) to the topmost beds of the Upper 

 Productus limestones of the Punjab Salt Range. Named 

 from the village of Chidru (32° 33' ; 71° 50') in the western part 

 of the range. Regarded by Waagen as about equivalent to the 

 Otoceras beds of the Central Himalayas and near the passage 

 between the Permian and Triassic systems. 



Chikiala Stage.— Named by W. King (Mem., Geol. Sum., Ind., 

 XVIII, 290, 1881) from the village of Chikiala (19° 3'; 79° 

 59'), situated near the boundary of the stage, but actually 

 on the underlying Kota sandstone. Considered to be resting 

 unconformably on the Kotas and doubtfully grouped with the 

 Upper C4ondwanas, being unfossiliferous and lithologically similar 

 to the Tripetty sandstones. 



Chikkim limestones and shales.— Named by F. Stoliczka (Mem., 



Geol. Sun:, Ind., V, 116, 1866) from the Chikkim hill (32° 21' ; 

 78° 3') in Spiti. Fossils found only in the limestone which lies 

 below the shale ; but the two together were regarded as Creta- 

 ceous in age (see also Hayden, Mem., Geol. Surv., Ind., XXXVI. 

 86, 1904). 



Chilpi beds. —Named by W. King (Rec, Geol. Surv., Ind., XVIII, 

 187, 1885) from the Chilpighat (22° 10' ; 81° 7') on the road 

 from the Bilaspur plains to the Mandla plateau. Quartz- 

 ites, dark-green and buff-coloured slates, shales, conglomerates 

 and numerous beds of trap. Generally much disturbed, but 

 sometimes gently inclined. Stratigraphical position left in 

 doubt, but probably equivalent to the Bihar transitions, 

 Dharwarian. L. L. Fermor (Mem., Geol. Surv., Ind., XXXVIII, 

 282-283, 1909) correlates them with the latter. 



Chin series. — Name proposed by F. Noetling (Rec, Geol. Surv., 

 Ind., XXVIII, 62, 1895 ; Pal. Ind., New Ser., I, 5, 1899- 

 1901) for the formations known to W. Theobald as the 

 Axial group (q. v.) in the Arakan Yoma. Noetling considers 

 these rocks to be Cretaceous or Eocene in age, and, though 

 in doubt about this, asserts that they are certainly not 

 Triassic. So named from the wild Chins who live in the 

 Arakan hills. 



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