AGE RELATIONS OF COAL-BALLS 



U.S.A. 



_ -' 7 



g>Garnett 



(Kansas) 



O-Tebo coal 

 5 > (Henry Co. 

 ,n Missouri) 



•^Shumway 

 g^Calhoun 



03 

 CO 



z 

 < 



( Indiana) 



'-•Pgrkcr 



■« Danville 

 ■j^Herrin 

 ojjHarrisburg 



o^Mazon sh. 

 — Pake ss. 

 u-^Rock Island 



I 



Q 

 < 



_l 



>l>Battery 

 ,>-, Rock sh. 



UJ 



en 



< Hindostan 



*-'t>(OrangeCo. 



— Indiana) 



< Coal ball occurrence 



# Mazocarpon occurrence 



> Noteworthy fossil plant horizon 



— Holzer Konglom 

 ( Saar. etc. ) 



EUROPE 



Q 



Z 



Autun (France) 



Chemnitz (Saxony) 

 > 



f^Jd Grand 

 <!J^> Croix 



(France) 



Q-COl- 



-•Radnitz 

 (Bohemia) 



lAegir 

 (Belgium) 



— Mansfield Marine Band 



-r^Katharina 

 ^, (Ruhr) 

 ^ MDonetz 

 {^J (Russia) 



>Finefrau(Ruhr) 

 ^■* 



Bouxharmont 

 (Belgium) 



<'*Koksfloz 



§ (Lower 



2 Silesia^ 

 < 



z 



(Dudley; 

 j^Ariey = Better Bed Coal 



°^/iUn<.rF„,,** THE GREAT 



4^Stalybridge^0f^'^°^ 



t: 2 



S. cc 



r < 



'^ z 

 c < 



<J<<Little 



U <« Limestone 



Z £ Coal 



u^ (Northumberland) 



to § 



>#Pettycur Is. 

 (FiYeshire) 



5 t 



DEVONIAN OLD RED 



Pig. 1 — Chart showing correlation of Carboniferous beds in America 



EuroDe. 



and 



