10. MILLER TOWXSIIIP. F 2 . 273 



The Hamilton Upper shale, (VIII.) 



Four lines of this shale cross the township. The first is 

 on the north side of Buffalo hills, and nearly coincides with 

 the upper road from Newport to Baileysburg. No good 

 exposure occurs along it, but its presence is indicated in 

 several places in the fields. 



The second line is on the south side of Mahanoy ridge 

 from Pine Grove Narrows to the Juniata river. This line 

 of outcrop may be seen in the roadside near Peterman's 

 Ore works, where the characteristic fossils of the Troyiclo- 

 leptus shale may be collected. 



At Peterman's and Cook's ore banks the characteristic fos- 

 sils of the Paracycles shale may be found. This line of 

 outcrop bends more to the south, thrown over by the rising 

 of the second ridge of Hamilton sandstone. The end of 

 Mahanoy ridge is doubled by a fault which develops itself 

 near the Juniata on the w r est bank, and increasing in throw 

 as it approaches the river brings up the Hamilton sandstone 

 which is shown at the canal lock. The Tropicloleptus shales 

 may be seen about a quarter of a mile from Losh's Run 

 station, where they yield their usual fossils. This outcrop 

 seems to extend far enough to the south to meet that brought 

 up by the Perry county fault, so that there is here a dou- 

 bling at least of the Hamilton Upper shales. 



There is a probability that a narrow strip of newer rocks 

 may run along the middle of the valley and part these two 

 upthrows, but I have seen no trace of it. Most of the 

 ground is covered with alluvial deposit, and consequently 

 the determination is very difficult and would require much 

 time. 



The position of these confluent outcrops of the Hamilton 

 Upper shale may readily be seen by looking at the geological 

 map of Miller township. 



The Genes see, Portage, Chemung group, (VIII) 



The rocks of this group compose almost the whole penin- 

 sula of which the northern part of Miller township consists. 

 18 F 2 . 



