Ashburner.] '^'^^ [Feb. IB, 



(11.) Interval, 10 feet, prolmblj' red shale. 



(10. ) SiindstDne, laminated, greenish-gra}', micaceous, 3 feet (exposed). 



(9.) Shale and fine, micaceous, argillaceous sandstone, 20 feet. 



(8.) Sandstone, fL-rruginous, massive, close-grained. 



(7.) Sandstone, coarse-grained, massive and distinct quartz grains in 

 contact, apparently cjuiented by an oxide of iron resembling the Clinton 

 Block ore near Beavertown, Union County. Tliickness 3 feet. 



(6.) Sandstone, rather massive, greenish, interst ratified with green and 

 red shales, 20 feet. 



(5.) Sandstone, dirty green, pretty compact, becoming micaceous down- 

 wards, brown and ver}' ferruginous, 13 feet. 



(4. ) Limestone, greenisli, very silicious with pebbles and plates of green 

 shale, hard and weathering with a worm-eaten aspect, 2 feet. 



(3.) Sandstone, green, argillaceous, micaceous, laminated, 7 feet. 



(2.) Interval, 45 leet. 



(1.) Sandstone, light brown, micaceous, laminated: beneath the red 

 shale at the river bank. 



This section from the base of the Conglomerate No. XII down to the 

 bottom of (2) shows a measured thickness of 19G feet, with two un- 

 measured intervals, (8) and (16.) 



The whole aggregate thickness from the base of Xo. XII to the red shale 

 at water level would probal)ly be between 200 and 220 fei-t. The distance 

 between the two sections at Wray's Hill and Riddlcsburg is about 9 miles 

 (air line). As the thickness of No. XI in that distance would probably not 

 vary appreciably, the Riddlesburg section may be said to represent 

 a of the upper member at Wray's Ilill. The general character of the 

 two is somewhat similar, the difference being no greater than might be 

 expected when the circumstances under which the deposit was made are 

 taken into consideration. 



The coal seam, which is mentioned in (17) as occurring 100 feet above the 

 limestone (14) is not, as reported above, in the "lower productive coals," 

 but is an interconglomerate coal found between the upper and lower con- 

 glomerate members of No. XII, and probably identical with the coal bed 

 No. 248 of our section. 



b. This part is composed principally of gray and red sandstones, 

 flags and shales, and is 520 ± feet thick. It is somewhat harder 

 than the overlying mass and exhil)its false bedding in the sandstones 

 toward tlic top, as seen in Wray's Hill tunnel ; the seams along the bed- 

 ding containing calcite. 



The strata here are not as argillaceous as those in the lower part of the 

 member. 



" c." Tiie lower subdivision is made up of very argillaceous shales and 

 sandstones, easily weathered, forming a deep red-colored, clayey soil. 



At Richmond Falls on the New River, W. Va., this series has a 

 thickness of 1450 feet, distributed as follows : 3. Upper red and variegated 



