60 Savage and Crooks — Early Silurian Rocks of the 



Section of strata exposed at Hendricks quarry and test pit. 



Thickness 



Fiborn Limestone: — Feet inches 



24. Dolomite, gray, thin bedded ; vesicular 6 



23. Dolomite, gray, fine grained, badly disintegrated, 



in places eherty 4 



22. Limestone, brownish-gray to gray, compact, very 

 fine grained, earthy, with sharp conchoidal 

 fracture; the basal part containing crystals of 

 calcite 18 . 



Hendricks Dolomite: — 



21. Limestone, white, fissile, fossiliferous, with some 



black streaks, weathering into lamina? 14 to 2 



inches thick 8 



20. Limestone, lithographic; similar to the 18 foot 



stratum above 1 



19. Limestone, grayish-white, fissile, thin bedded, 



stylolites structure prominent 1 4 



18. Limestone, yellowish-white, hard, massive ...... 2 8 



17. Dolomite, yellowish-brown, fossiliferous, massive, 



crystalline 5 9 



16. Limestone, yellowish-brown, soft 1 



Downward continuation of section in the test pit. 

 15. Limestone, white, with black streaks ^ to 2 

 inches apart; in upper 1 foot there is a ten- 

 dency to part along bedding planes 8 10 



14. Limestone, lithographic, similar to No. 22 1 



13. Limestone, white, dense, with black streaks 2 8 



12. Limestone, whitish, dense, with no streaks 1 9 



11. Limestone, yellowish -brown above, passing into 

 gray at the base where it becomes more massive, 

 and contains numerous small solution cavities 6 

 10. Limestone in three layers, respectively 9, 13 and 

 15 inches thick, brownish-gray, fine grained, 

 separated from one another by thin clay bands 3 

 9. Limestone, lithographic at base, passing upward 



into a cherty shale 1 6 



8. Shale band 3 



7. Limestone, grayish-white 7 



6. Shale band 6 



5. Limestone, magnesian, grayish-white, crystalline 2 



4. Dolomite, white, highly crystalline 9 



3. Limestone, grayish-white 1 6 



2. Limestone, white, crystalline 1 



1. Dolomite, gray to white, crystalline, massive, 

 breaking angularly, and exhibiting no bedding. 

 To floor of crusher pit 2 



81 



