Chapter VI. 

 Hub carboniferous Measures. 



Mauch Chnnk red shale, (No. XI,) 170'? 



Pocono sandstone, (No. X,) 665'? ^12 



Trans tion (Sub-Pocono) measures, 375' 





Mauch Chunk red shale. 



The measures immediately below the Pottsville Con- 

 glomerate are so seldom and so badly exposed along the 

 Susquehanna- Wayne county line, that no good section of 

 them can be made from surface shows. 



But at Scranton excellent exposures may be found along 

 Roaring branch, as follows, (see Fig. 7 a. ) 



1. Sandstone, very hard, buff, in thin layers, 15' 



2. Sandstone, burl', and shale, . . 75' 



3. Sandstone, grayish white, pebbly, 20' 



4. Shales, buff, sandy, 30' 



5. Sandstone, gray, hard, 15' 



6. Shale, reddish, 10' 



7. Shale, dark, 5' 



It is difficult to imagine that these mostly hard, gray, 

 sandy, and even pebbly deposits — constituting a formation 

 only 170' thick, and with only 10' of reddish shale — can repre- 

 sent the 3000' of deep red shales at Mauch Chunk (and along 

 the south border of the Pottsville anthracite coal held for a 

 hundred miles) only 40 miles in a direct line south from 

 Scranton. But the Mauch Chunk formation visibly sur- 

 rounds all the anthracite basins, in the Roomrun, Quakake, 

 Locust, and Catawissa valleys, and can be followed up along 

 both sides of the Wyoming basin, past Wilkesbarre to 

 Scranton ; its red shale character preserved as far as Wilkes- 

 barre and Pittston ; but its thickness constantly diminishing. 

 There can be very little doubt therefore about the identity 

 of the Scranton, Carbondale and Forest City subconglom- 



(55 G 5 .) 



