Maryland Geological Survey 527 



- o m 



tec g-o •= ' i; 2 

 K *- btr; J3 c-i J < c — 



Olive-green shale and thin beds of sandstone, all weather- 

 ing yellow. Dip 73° W. At about 950 vertically was 

 found Atrypa sinnosa, Grammysia subarcuata 1089 166 1028 



Argillaceous green shale and thin beds of sandstone be- 

 low, thicker bed of sandstone above. All weathering yel- 

 low. Containing in cut on upper railroad at a horizon near 

 top of this unit Camarotocchia congregata var. parkhead- 

 ensis, Cyrtina Tiamiltonensis, Liorhynchus mesacostale 

 abundant, Schuchertella chermtngensis, Productella lachry- 

 mosa ?, Spirifcr (Delthyris) mesacostalis ?, Pterinea che- 

 mungensis 914 124.5 8G2 



East end of first cut west of Winchester bridge 782 738 



Woodmont Shale Member 



Concealed. Fissile olive-green shale, exposed on upper 

 railroad 782 37.5 738 



Olive-green and yellow shale and thin beds of ttaggy 

 sandstone 742 225.7 701 



Yellow shale breaking somewhat irregularly. At the 

 top of this unit were found loose Ambocwlia umbonata, 

 Chonetes sp. It is doubtful whether these fossils were in 

 place 502 30 475 



Railroad N. 73° W. 



Olive-green shale and thin bands of greenish sandstone, 

 all weathering yellow. At top of this unit Camorotrrchia 

 sp. was found loose, but it is doubtful whether it was in 



place 470 311.7 445 



Concealed 140 133 133 



Center of trestle over Winchester road. Approximate 

 position of the Romney-Jennings contact 



RoMNKY Formation 



The presence of the Parkhead member is shown by the occurrence of a 

 number of its characteristic species and by a slight development of sand- 

 stone, which may represent approximately the upper conglomerate of 

 that member. The percentage of sandstone is, however, so slight as 



