224 Kindle — Niagara Limestones of Hamilton County^ Ind, 



quite barren of fossils." In 1901* the limestones at Connor's 

 mill and near Fishersburg were referred by the writer to the 

 Niagara, but the paleontologieal evidence for this determina- 

 tion was not given. The faunal lists here given clearly show 

 the ^Niagara age of these beds. The Lockport (J^iagara) lime- 

 stone is their probable equivalent in the Niagara group. 



The Hamilton county outcrops are the most southern expos- 

 ures in the State which show highly tilted Niagara strata. 

 The orogenic disturbances, which caused a general tilting of 

 the Niagara rocks in northern Indiana previous to the begin- 

 ning of Devonian sedimentation, did not affect the southern 

 portion of the State, where they lie nearly horizontal, and are 

 conformable with the Devonian rocks. North of the Ohio 

 river eighty miles the Niagara rocks are slightly unconforma- 

 ble with the Devonian, f but nearly horizontal. The Devonian 

 rocks have not been observed in contact with the Niagara in 

 Hamilton county, but it is very probable that they are uncon- 

 formable as they have been shown to be further north in the 

 Wabash valley.j: 



U. S. Geol. Survey, 

 New Haven, Conn., June, 1902. 



* 25fh Ann. Eep. Dept. Geol. and Nat. Res., Ind., p. 559. 



f Kindle, 25th Ann. Kept. Dept. Geol. Nat. Hist., Ind., plate 16. 



ilbid., p. 562. 



