PALEOZOIC FORMATIONS OF MARYLAND 



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Alleglieny formation. — -This is the first of the Coal-measure 

 formations and in general covers the western slope of Alleghany 

 Front extending from Pennsylvania to the Potomac valley and 

 up it into Garrett county. It also extends up George's Creek 

 valley from Westernport to the vicinity of Morrison's, one mile 



P'iG. 4. — Block of Pottsville conglomerate, at side of National Road on top of 

 Meadow Mountain, Garrett Co. 



below Barton ; and occurs in the northwestern corner of the 

 county. The rocks consist of massive to thin-bedded grayish to 

 olive sandstones, gray and black shales and beds of fire-clay and 

 coal. At Barrelville and on the northern part of Dan's Moun- 

 tain two coal beds occur near the base of the formation which 

 have not been found near Westernport. The lower one, called 

 the "Bluebaugh" (Brookville) coal, varies in thickness from 

 2^ to 4}4 feet and 30 feet or more above it is the "Parker" 



