WEST VIRGINIA GEOLOGICAL SURVEY. 145 



The Clarksburg Red Shale is well exposed at the William 

 E. Donlan stone quarry at Weston, a section of which is pub- 

 lished under the Lower Connellsville Sandstone, on page 141. 

 Here the shale, No. 3 of section, is 35 feet thick, coming im- 

 mediately under the Lower Connellsville. A sample collected 

 from this exposure shows the following, according to Krak : 



Per cent. 



Silica (SiO,) 58.42 



Ferric Iron (Fe,O 8 ) 7.47 



Alumina (ALO 3 ) 19.57 



Lime (CaO) 0.88 



Magnesia (MgO) 1.01 



Potassium Oxide (K 2 O) 2.94 



Sodium Oxide (Na 2 O) 0.44 



Titanium Oxide (TiOo) 0.54 



Phosphoric Acid (P 3 O 5 ~) 0.34 



Moisture 2.22 



Loss on ignition 6.22 



Total 100.05 



In Gilmer, the following section of the upper stratum of 

 reds was made at the road fork at the northeast end of Glen- 

 ville, on the property of Mrs. John McGinnis : 



Feet. 



Sandstone and concealed in bluff, Connellsville 



Shale, red, Clarksburg, (upper portion), (798' L.) 25 



Sandstone, shaly, Lower Connellsville 



The widespread distribution of these Clarksburg Red 

 Shales throughout both counties and their general character 

 indicate that they will prove to be useful for making brick, 

 both for paving and general building purposes. 



THE MORGANTOWN SANDSTONE. 



The Morgantown Sandstone of J. J. Stevenson, named 

 from its occurrence at Morgantown, AA^est Virginia, occurs 

 generally throughout Lewis, where it crops, but its physical 

 appearance preserves no distinct type by which it may be 

 recognized, except as it appears in conjunction with other 

 known strata. Usually it is massive, gray, medium coarse and 

 medium hard, weathering to brown, but it is often flaggy 

 or shaly, and in southern Lewis frequently carries quartz peb- 

 bles. It has been quarried at several points in Lewis as the 

 following data will show: 



