THE IRON SERIES CONTINUED. 



95 



more fossiliferous toward the south and more oolitic toward the / 

 north. It is very productive in the Chattanooga region. 1 



2.02.06. The Clinton just appears in northwestern Georgia, and 

 continues thence into Alabama,where it is again of great importance,, 



FIG. 14. Clinton Ore, Eureka Mine, Oxmoor, Ala. After C. H. Smyth, Jr. 



and, with the less productive Siluro-Cambrian limonites, furnishes 

 practically all the ore of the State. The outcrop can be traced 

 almost continuously for 130 miles. The ore is rich in fossils and 

 occurs in several beds, which, although averaging much less, may 



FIG. 15. Cross-section of the Sloss Mine, Red Mountain, Ala. 



aggregate, as at the Eureka furnace, as much as 34 to 37 feet. The 

 chief mines are in Red Mountain, a northeast and southwest ridge, 

 east and south of Birmingham. Folds and faults have brought the 

 beds into close proximity with the coal and limestone of the 

 region, and thus into a position very favorable for economic 

 working. 2 



1 Killebrew and Safford, Resources of Tennessee. E. C. Pechin, " The- 

 Iron Ores of Virginia," etc., M. E., XIX 1016. J. B. Porter, " Iron Ores,, 

 Coal, etc., in Alabama, Georgia, and Tennessee," M. E., XV. 170. J. M. 

 Safford, Geol. of Tenn. 



2 A. F. Brainerd, " On the Iron Ores, Fuels, etc., of Birmingham, 



