354 The Upper Devonian Deposits of Maryland 



County. This may be called the Sideling Hill Creek area of the Jennings 

 formation. 



In Allegany County the Jennings occupies the center of the Pawpaw 

 anticline and outcrops in a wide area extending from the east slope of 

 Green Ridge to the west side of Polish Mountain. It also forms a broad 

 belt east of and parallel to the Alleghany Front. 



In Garrett County it occupies the center of the Oakland anticline and 

 is exposed in a small area west of Accident. 



Exposures in Washington County 



Exposure East of Millstone. — LTndcr the description of the Middle De- 

 vonian, exposures of the Upper Eomney have been described on the Na- 

 tional Eoad to the southeast of Millstone and about one-half mile west of 

 Licking Creek. That part of the section closes with massive gTayish 

 sandstone, alternating with, shales and is regarded as near the top of the 

 Eomney. The exposures are somewhat infrequent, accompanied by rolls 

 and changes in the dip so that no attempt was made to measure the 

 thickness of the rocks in this section. 



No. 1. Succeeding the Eomney to the westward is the Jennings 

 formation, the first exposures of which are not far beyond the last one 

 described under the Eomney. These rocks consist of rather mealy, mica- 

 ceous, arenaceous to argillaceous shales, some of which are thin and buff. 

 'No fossils were found. Some of the harder blocks resemble in lithologic 

 appearance the Woodmont member of the Jennings formation to which it 

 is believed they belong. 



No. 2. On the William E. Jones farm about 2 miles east of Millstone 

 from the excavation for a well were obtained brownish-red sandstones 

 with olive shales and thin sandstone. Some of the sandstones contain 

 fossils, as Camarotoecliia and segments of large Crinoid stems. The sand- 

 stones are quite reddish and these rocks apparently belong in the lower 

 part of the Chemung stage of the Jennings formation. 



No. 3. In a small quarr}', which is no longer worked, one-half mile 

 east of Millstone are red micaceous and gray sandstones alternating with 

 olive and red argillaceous shales. There is also an occasional stratum 



