Chap. IV. § 2.] loaver damuda group. 55 



and are best exemplified by the following measured section of 

 Mr. Williams.* 



Ft. in. 



1. Black and gray argillaceous shales, containing iron-mine 



(seen) 



2. Gray and brown sandstone 



3. Inferior coal (seen) 



4. Gray underclay, with arenaceous nodules ... 



5. Light-gray sandstone, coarse-grained, quartzose, felspathic, and 



micaceous 



6. Argillo-arenaceous shales, with stains of carbonaceous matter ... 



7. Brown sandstone 



8. Argillo-arenaceous shale ... .. .... ... 



9. Brown sandstone with ripple-marks 



10. Inferior coal ... 



11. Gray argillo-arenaceous underbed 



12. Brown sandstone, coarse-grained, felspathic, and quartzose 



13. Arenaceous shale 



14. Black argillaceous shale 



15. Dark-brown sandstone, micaceous, and alternating ivith arena- 



ceous shale 



16. Black argillaceous shale 



17. Thin-bedded sandstone, alternating with arenaceous shale 

 -*18. Brown sandstone, quartzose, felspathic, coarse-grained, and 



hard 



19. Arenaceous shale 



20. Brown sandstone, containing concretions of arenaceous lime- 



stone ... ... ... ... 21 



21. Hard sandstone, white and light-gray, occasionally stained 



red and brown 



22. Brown sandstone, quartzose, felspathic, and hard 



23. Coal, seen on out-crop 



24. Gray under-bed 



25. Brown and light-gray sandstone, thin and regularly bedded, 



and containing rounded boulders of quartz six inches diameter 



26. Thick-bedded sandstone, containing large grains of quartz 

 *27. Brown arenaceous limestone in large concretions 



28. Argillo-arenaceous shale 



29. Gray arenaceous shale 



30. Arenaceous ironstone ... ... ... 



Carried over ... 466 10 



* Geological Eeport on the Damoodah Valley— pages 84 — 87. 



40 







40 







1 







2 



0- 



32 







•4 











8 



6 



6 



12 



6 



2 







10 







56 







20 







5 







27 







5 







23 







13 







10 







21 







19 







1 







3 







18 







30 







2 







18 







24 











2 



