ALLEGHENY FORMATION OF SECOND PENNSYLVANIA BASIN 89 



the upper two beds can be placed in the Allegheny, and their relations to 

 beds farther south can not be determined on stratigraphical grounds. The 

 nearest measurement is that at Kenovo, in Clinton county, 32 miles south- 

 west, and the next, by Doctor Chance, is about 13 miles farther. These 

 are not sufficiently complete to make comparison with the Tioga section 

 or even with the detailed sections obtained in Center county and beyond.* 

 Mr d'Invilliers's section in Center county has a familiar look; this is 

 about 15 miles northwest from Snowshoe, in the First basin. At a few 

 miles southwest in Clearfield is Mr James's section at Karthaus, recorded 

 by the First Pennsylvania Survey, and at Clearfield, nearly 15 miles 

 farther, is a section by Doctor White. These in the order given are as 

 follows : 



Feet. Inches. Feet. Inches. Feet Inches 



Upper Freeport 3 6 6 4 4 



Interval 50 47 50 



Lower Freeport Thin 10 2 6 



Interval 42 32 6 "\ 



Upper Kittanning 2 8 3 I 70 



Interval 34 38 6) 



Middle Kittanning 3 3 2 1 6 



Interval 45 33 35 



Lower Kittanning 2 6 3 9 2 



Interval 32 37 6 45 



Clarion and shale 1 6 16 10 6 



Interval 22 36 9 10 



Brookville 2 6 1 2 



The interval from Upper Freeport to Lower Kittanning varies from 

 158 feet 6 inches to 176 feet, but another measurement by Mr d'Invilliers 

 in Center county gives only 163 feet 6 inches; so that the variation in this 

 distance of about 30 miles is insignificant. Clearfield is 10 or 12 miles 

 northwest from Houtzdale, in the First basin, where the interval is 161 

 feet. The "Big bed" of the Karthaus section is clearly the Upper Free- 

 port, which is the important bed in this region, as it is in Snowshoe. The 

 Lower Freeport is worthless, as in Snowshoe and in the First basin within 

 Clearfield. The Gorman coal bed is reported in several sections, but as 

 in the other basin is always unimportant. Doctor Chance's sections show 

 that the Lower Freeport limestone is persistent as far north as Karthaus, 

 beyond which it soon disappears. The Upper Freeport limestone is of 



*F. Piatt: (G), pp. 166, 174, 176, 186, 18». 

 C. A. Ashburner : (G 4), p. 74. 

 H. M. Chance : (G 4), p. 69. 



