512 The Upper Devonian Deposits of Maryland 



M OJ i. - 



§-§:S. 



Road N. 40° E. Map altitude 890 



:3 O ^ ■*^ % a. 



0§.Soo — — ».ea 



:: ^ M »: .o e- <; o .c 

 Green fissile shale. At top in a shale occurs the Buchiola 

 speciosa fauna (Ptcrochwjiia, etc.) 1690 39 625 



Road N. 60° E. 

 Green fissile shale. Dip 28° E. At top occurs the Buch- 

 iola speciosa fauna 1530 50 586 



Concealed. Dip 28° E 1400 460.5 536 



Road S. 79° E. Map altitude 740 



Concealed 200 76.5 76.5 



Romney-Jennings contact is concealed. Position approxi- 

 mate 



The great profusion of fossils in the Parkhead member and the occur- 

 rence of bright-red strata just aliove tlie base of the Chemung member 

 are interesting features of the foregoing section. 



XVIII. Section on National Road. Polish Mountain ' 

 The Jennings is well exposed on the National Eoad on the western 

 slope of Polish Mountain. The section begins at the Pomney-Jennings 

 contact, 450 feet west of the center of the bridge over Town Creek and 

 extends to the cross roads on the top of the mountain. It is continued 

 above this point on the road leading to the southwest on Polish Mountain. 



Ill 



Jennings Formation 



n o "*- 

 C"2 boo 



Chemung Sandstone Member '5 c § g - 



Concealed. A conglomeratic sandstone near top of moun- 

 tain 75 3375 



Concealed. A massive conglomeratic sandstone crosses 

 the road which leads southwest from National Road. Its 

 outcrop is 1740 from National Road and its map altitude 

 1560 feet. The interval from it to crossroad largely con- 

 cealed. The remainder of the section is on the National 

 Road 10565 200 3300 



' Measured in 1907 by pacing. Revised from instrumental surveys of High- 

 way Division, Md. Geol. Survey. Corrected altitudes are from latter survey. 



