WEST VIRGINIA GEOLOGICAL SURVEY. I2Q 



Since this shale has not been previously described or 

 named, it will be called the Weston Shale in this Report. A 

 sample collected from this horizon shows the following anal- 

 ysis, according to Krak : 



Per cent. 



Silica (SiO a ) 50.65 



Ferric Iron (Fe 2 O 3 ) 8 . 08 



Alumina (A1,O 3 ) 13.93 



Lime (CaO) 8.62 



Magnesia (MgO) 2 . 11 



Potassium Oxide (K 2 O) 3 . 28 



Sodium Oxide (Na^O) . 78 



Titanium Oxide (TiO 2 ) . 31 



Phosphoric Acid (P 2 O 5 ) . 67 



Moisture 2.60 



Loss on ignition 8.60 



Total 99 . 63 



The Weston Shale is prominent along the public road 

 north of the Crescent Glass Factory, appearing between the 

 Redstone Limestone and the Pittsburgh Coal. It was noted, 

 also, in the short section, published on page 127, describing 

 the Redstone Limestone on the Tierney Brothers property 

 along Town Run at the southeast edge of Weston, being 10 

 feet thick and limy. 



A barrel of this shale was shipped by George I. Keener, 

 owner of the works, to State Road Engineer A. D. Williams, 

 at Morgantown, who has had a test made of it for brick, the 

 result of which, with a further description of the plant, will 

 appear in Chapter XII. 



THE PITTSBURGH COAL. 



The Pittsburgh Coal, first named and described by J. P. 

 Lesley in 1856 at the city of Pittsburgh, Pa., is the most valu- 

 able economic horizon of the Monongahela Series. In Lewis 

 and Gilmer, it is somewhat patchy in its occurrence, lacking 

 the uniform thickness and character that distinguish it in 

 western Pennsylvania and northern West Virginia, but there 

 is a broad belt extending across both counties where it will 

 furnish a large amount of good coal. 



This bed reaches its best development in the region of 

 Gilmer Station, Gilmer County, where it has the following 

 general section: 



