74 



ILLINOIS STATE GEOLOGICAL SURVEY 





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REYNOLDSBURG 

 "MAKANDA" 

 BATTERY ROCK 



PINNICK UNDO 



FRENCH LICK (IND.) 



O Q. 



UJO 



E- 



x 





KINKAID 



DEGONIA 



MENARD 



WALTERSBURG 



VIENNA 



TAR SPRINGS 



GLEN DEAN 

 HARDINSBURG 

 GOLCONDA 

 CYPRESS 



Mwmm 



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^VWVlVVWWc 



I'll I I i i 

 "i ■I"* 



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ill. 



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PAINT CREEK 

 YANKEETOWN 

 RENAULT 

 AUX VASES 



Text fig. 7. — Generalized stratigraphic occurrence of spores of Triletes, Cystosporites, Spencerisporites, 

 Monoletes, and Didymosporites. Coals or formations sampled are indicated by crossed lines (X). 

 Chart illustrates the contrast between the assemblages found in upper Mississippian rocks and those 

 found in the unconformably overlying Pennsylvanian rocks. 



and sandstone-shale formations average 

 from about 30 to 150 feet thick (Workman, 

 Swann, and Atherton, 1950) . Mississippian 

 coals are rarely more than a few inches 

 thick and less persistent than those known 

 from Pennsylvanian strata (Wanless, 1947) . 



The 26 samples of thin coals or carbona- 

 ceous layers investigated are from Illinois, 

 Indiana, Kentucky, and Virginia. Those 

 from southern Illinois were collected from 

 Jackson, Johnson, Perry, Pope, and Ran- 

 dolph Counties. Although sample cover- 

 age is by no means satisfactory, it is far 

 more complete than that of previously pub- 

 lished investigations. 



The samples containing the most abun- 

 dant megaspores are those of the coal in the 

 Bethel (Mooretown) Formation from Ken- 

 tucky and of the coal in the Vienna Forma- 

 tion from Illinois. The assemblages of the 



samples are here discussed in ascending 

 order of their stratigraphic position. 



Lower Chester Series 



No samples were examined from the 

 three lower formations: the Aux Vases 

 Sandstone, Renault Formation, and Yan- 

 keetown Sandstone. The Paint Creek For- 

 mation of the Chester outcrop area is repre- 

 sented, in part, by the Bethel Sandstone in 

 Illinois and by the Bethel (Mooretown) 

 Sandstone in Indiana and Kentucky 

 (Swann and Atherton, 1948) . Five sam- 

 ples of coals within the Bethel (Moore- 

 town) Formation (reported on the distri- 

 bution chart, text fig. 9, as Paint Creek) 

 were examined. 



The following genera and species have 

 been identified from a 4-inch coal in the 

 Bethel (Mooretown) Formation (macera- 

 tion 943) from Hardin County, Kentucky: 



