Prosser — Stratigraphic Position of Ilillsboro Sandstone. 437 



the Monroe has been raised from the Cayugan series to the 

 Helderbergian of the Devonian. 



SECTIONS ON QUAKER HILL. 



It will be recalled that Dr. Orton gave the section on the 

 Burying Ground Hill (Quaker Hill, which is also said to be 

 called High Top), about a mile southwest of Samantha, High- 

 land County. In July, 1915, the road down the southern side 

 of the hill to the farm house of Mr. S. JB. Benigar had been 

 freshly graded and the gutters cleaned out so that the rocks 

 were more clearly shown than at any other time when it has 

 been visited by the writer. A section was measured at this 

 time with the assistance of Mr. Kenneth C (Nottingham, which 

 is believed to give the stratigraphic position more accurately 

 than in any other account which is known to the writer. The 

 section begins on top of the hill near the western side of the 

 Cemetery and follows the road south down the hill to the 

 house of Mr. S. B. Benigar. 



Section along the highway on the southern side of Quaker Hill. 



Total 

 Thickness Thickness 

 No. Ft. In. Ft. In. 



15. Ohio shale. — Specimens of black shale out 

 of hole for telephone pole on highway 

 near the Cemetery. Covered interval 

 for some distance down the highway. . 17 8 75 1 



14. Black, fissile shale weathering to a brown- 

 ish color. Exposed by roadside below 

 the James Burns house 4 57 5 



13. Covered interval 2 53 5 



12. Monroe formation. — Brownish to gray- 

 ish magnesian limestone which is not 

 continuously exposed, since the inter- 

 val is partly covered. A few fossils 

 were found _.. 12 51 5 



11. Covered interval 10 39 5 



10. Hillsboro sandstone. — White, fine-grained 

 sandstone, which crushes into a fine 

 sand and weathers on the surface to a 

 brown or rusty color. No efferves- 

 cence in cold HC1 2 5 38 5 



9. Covered interval in road gutter 4 6 36 o 



8. Light gray to brownish, porous rock which 

 effervesces in cold HC1, and has a slight 

 bituminous odor __ 9 31 6 



