Maryland Geological Survey 391 



There are exposures on the side of the road west of the Mitchell house 3 

 miles west of Altamont and on what is known as the Williams farm. In 

 the road ditch on the western side of the hill are numerous pieces of 

 olive to buff shaly sandstone containing abundant specimens of Lepto- 

 strophia perplana var. nervosa Hall and some other species. Some 

 of the thinner and rather harder layers contain pelecypods. Near 

 the top of the hill in some rather sandy shales are numerous specimens 

 of Chonetes scitulus Hall. There are also argillaceous shales shown 

 by the side of the road and it is evident that all of these rocks occur in 

 place at this locality. On the small hill to the west are loose blocks of 

 sandstone, part of which are also fossiliferous, and a few blocks of 

 flat pebble conglomerate. The dip of the rocks on this hill is to the 

 east. 



The road across the Williams fann was formerly a good locality for 

 collecting fossils but they are now partially exhausted. The species which 

 occurred, though not numerous, were represented by a good many speci- 

 mens. On top of the hill at the Mitchell house are numerous, unfos- 

 siliferous, loose blocks of fairly fine grained, buff to brownish sandstone. 

 This hill is a high point for this region and there is a good view of the 

 mountain peaks to the southwest and northeast. 



East of the junction of the Deer Park and Swanton and Altamont 

 roads, about 1 mile west of Altamont, red argillaceous shales are exposed 

 by the road side. To the west of the corners and east of the school-house 

 greenish-gray sandstones are shown but no fossils M^ere found in any of 

 these rocks. On the ridge directly east of the school-house where the road 

 starts down the grade is a thin ledge of conglomerate. The pebbles of this 

 stratum are not conspicuously flattened and, like the one described on 

 the road toward the Hoop Pole Eidge, it probably belongs near the top of 

 the Jennings. 



Exposures North of Deer Parle. — Other good localities for examining 

 the upper part of the Jennings formation are on the two highways north 

 of Deer Park. Probably the exposure of some 60 feet on the road north- 

 east of Deer Park toward Altamont is the greatest thickness of any one 

 outcrop; the rocks are fossiliferous and it is a good locality for collecting. 



