Maryland Geological Survey 393 



Hall, DoiivilUna cayuta Hall, D'ouvillina cayuia gradliora Clarke, Lepto- 

 strophia perplana nervosa Hall, Schuchertella chemungensis (Conrad), 

 Productella speciosa Hall, Schizophoria striatula, var. marylandica 

 Clarke, Spirifer disjunctus Sowerby, Leptodesma agassizi Hall, Lep- 

 todesma lichas Hall, Leptodesma longispinum Hall, Cypricardella mary- 

 landica Clarke, Cypricardella nitidula Clarke, Palaeoneilo constricta 

 (Conrad) , Palaeoneilo filosa (Conrad) , Pterinea nodocosta Clarke, Schizo- 

 dus chemungensis var. quadrangularis Hall, Sphenotus contractus Hall, 

 Murchi^onia eccJesia Clarke, Palaeotrochus praecursor Clarke, Tentacu- 

 lites di<icissus Clarke. 



On the ridge to the west of the road leading north from Deer Park 

 station which is crossed by the upper one from Deer Park to Mountain 

 Lake Park, are numerous large blocks of conglomerate. These blocks are 

 on the western side of the ridge facing Ness Lick Run and in lithological 

 appearance are similar to those which occur on the other side of the run. 

 To the south on the same side of the ridge are numerous blocks of flat 

 pebble conglomerate by the side of the lower or new road from Deer Park 

 to Mountain Lake Park. The blocks are more conspicuous near the top of 

 the ridge and on the upper part of its western slope. The late Mr. Eobert 

 H. Gordon reported that to the south of this road on his grounds the 

 conglomerate was shown in place in excavating for a building. This line 

 of blocks on the ridge to the east of Ness Lick Pun seems to show a con- 

 tinuous stratum of the conglomerate, which is apparently on the eastern 

 side of the anticlinal axis. 



'Exposure Northeast of Oahland. — The section giving the greatest nearly 

 continuous exposure and thickness of the Jennings and Catskill forma- 

 tions is that on the upper Deer Park Eoad beginning about 2 miles 

 northeast of Oakland and following the road southwest into the edge of 

 the town. The lower rocks contain plenty of Chemung fossils ; then there 

 is a considerable thickness with alternation of red and olive colored rocks, 

 finally terminated by about all clear red shales and sandstones of the 

 Catskill formation. 



No. 1. Exposi;res above thin sandstones and shales on the upper Deer 

 Park Road 2 miles northeast of Oakland. In some of the lavers are 



