278 



GEOLOGY OF EASTERN WISCONSIN. 



Earth. 



1. Carved strata of hard, compact, flint-like, bluish dolomite. 18 inch if. 



2. Compact bluish white dolomite. Purest layer. 13 inches. 



3. White compact dolomite, with quartz in layers, at the bedding j^-d'd. 28 



inches. 



4. Compact whitish dolomite, similar to the above, but less silicious. ?i> ir Aties. 

 Unexposed. ti to 7 feet. 



5. Blue compact hard dolomite, somewhat sijicious. 9 inches. 



6. Yellow, fine-grained dolomite, softer than the above. 3 feet. 



7. Thin sandy, argillaceous layer. 1 inch. 



8. Thin bedded dolomite, suitable for lime. 12 inches. 



9. Fine grained, but rough bedded dolomite. 3 feet. 



10. Thinner bedded, compact dolomite. 3 feet. 



11. Thin, shelly, sandy layer. 10 inches. 



12. Unexposed. 3 feet. 



13. Mottled brecciated dolomite. 18 inches. 



14. Very rotten, chippy layer. 18 inches. 



15. Brecciated mo:tled layer, as above. 18 inches. 



^J*^ - 16. Thick bedded, rough, uneven-textured dolomite. 6 feet. 



17. Shelly rotten layer. 3 feet. 



18. Not exposed. 3 feet. 



r^^VV?"" 19- Rou B n ' uneven-tex*.ured dolomite. 1 foot. 



20. Flinty layer. 4 inches. 



^- 21. Somewhat sandy, dolomitic limestone. 4 inches. 

 ta->i^ 22. Rough, irregular dolomite. 3 feet. 



!23. Sandy layer. 1 foot. 



2J. Light colored, slightly silicious and moderately hard dolomite. 2 feet. 



25. Broken rotten layer. 14 inches. 

 ^ZT^Zlf 2ti - Silicious, dolomitic limestone, very hard and flint-like. 2 feet and 9 inches. 



27. White sandstone, marked with green. 4 inches. 



28. Sandy layer. 3 inches. 



- 29. Similar to No. 26. 3 feet and 3 inches. 



30. Oolitic layer. 4 inches. 



31. Coarsely brecciated layer, chiefly sandstone, but with some quartz and quart- 



zite-like rounded and angular masses. 4 feet and 2 inches. 



32. Coarse friable sandstone of uniform grain, and containing nodules of iron 

 ore. Quartzite-like layer near the top. 3 feet and 3 inches. 



Unexposed. 



