18 



L.E. POPOV, L.R.M. COCKS AND I.F. NIKITIN 



Anderkenyn-Akchoku Section (eastern side) 



Parastrophina 



Kellerella 



Association 



Ectenoglossa 

 Association 

 8134 



Tesikella 

 Association 



Bivalved 8134a 



molluscs and 

 gastropods 



8134b 



Ma bell a ■ 

 Sowerbyella 

 Association 

 8235 8137 621 



Unit 5 



Uunit 5 



\ 50 m 

 Unit 2 \/ Unit 3 



' 25 m N 



55 m 



Kujandysai Section 



Tesikella 

 Association 



7611 



Parastrophina - Kellerella Association 

 2538 



Mabella ■ Sowerbyella 

 Association 



Ectenoglossa 

 Association 





Unit 1 



52 m 

 Unit 2 





8219 



Unit 6 



Buldukbai-Akchoku Section 



Acculina - Dulankarella 

 Association 



Ectenoglossa 

 Association 



Mabella - Sowerbyella 8231 ■ 

 . Association 



110 



120 m 



8227-80 



8227-40 

 8227-10 



Units 



36 m ""* Unit 4 

 \/"\/ Unit 3 



Unit 2 I 



Fault 



Mabella - Sowerbyella Association 



Unit 1 

 20 40 60 80 100 



Unit 6 



DEVONIAN 



Conglomerate 



UPPER ORDOVICIAN 

 Dulankara Formation 



>*•*•* Conglomerate, pebbly, polymict 



Anderken Formation 



I I Siltstone and mudstone 



oa 



Limestone, massive 

 micritic 



pep|pe|| Limestone, algal, 

 :g^$<a nodular 



Siltstone 



-- vr^jH Intercalating sandstone 

 r -r-:-r-:-T:'-r and siltstone 



Sandstone, 

 cross-bedded 



— -^ Sandstone, bedded. 

 Sandstone 



252 J Conglomerate, pebbly, 



J oVoVoj polymict 



Fig. 5 Schematic stratigraphic sections of the Anderken Formation in the Chu-Ili Range, showing the position of samples and distribution of brachiopod 

 associations. 



