68 C. W. Honess — Stanley Shale of Oklahoma. 



bedded, drab, slaty shale in layers one-half inch or less up 

 to three inches thick and averaging one inch. Grading 

 upward into thin-bedded, hard, fissile, blue, slaty shale 

 uniformly and evenly bedded, the blue tough flints become 

 less and less and practically cease at a horizon 65 feet 

 above the bottom where a very characteristic thin quartz- 

 ite (1 foot to 4 feet) occurs. This is cut by numerous 1 

 inch quartz veins traversing it in all directions; it is a 

 resistant layer and forms a shelf or projecting ledge in 

 many places and it is found from one end of the region to 

 the other which is a very good indication of widespread 

 (50 X30 miles) conditions and persistence of beds. Dr. 

 Schuchert thinks these basal 65 feet should join to the 

 Arkansas Novaculite series, thus making the heavy 

 bedded, light gray quartzite, the bottom of the Stan- 

 ley.^ ^ The following is a measured section of the 

 second and third divisions of the Arkansas Novaculite 

 plus the succeeding basal beds of the Stanley as observed 

 on Flat Rock Branch at the road crossing SE. %, sec. 17, 

 T. 3S., R. 26E., Oklahoma. 



Basal Beds of Stanley. 



Top. Feet. Inches. 



1. Dark thin fissile shale weathering greenish to 



bronze, one or two thin quartzitic layers .... 6 



2. Light gray qnartzite hea^y bedded and cnt with 



veins of milky qnartz 3 6 



3. Light gray quartzite thin even quartz veins. . 8 



4. Thin-bedded fissile blue slaty shale — evenly 



finely bedded now and then a harder quartz- 

 itic layer under two inches in thickness. ... 29 



5. Thin-bedded fissile blue slaty shales uniformly 



and thin bedded, jointed; one inch layers 

 quartzite occur not infrequently and are ex- 

 tremelv hard and tough and of blue-gray 

 color .' 32 



6. Blue flinty layer 3 



7. Hard even bedded drab slaty shale 11 



8. Hard blue flint layer 1 



9. Drab hard shale 3 



10. Blue-gray flint layer 2 



Hard even bedded drab clay shales 1 2 



11. LTniformly bedded banded white flint, banded 



onl}^ at the bottom ; top massive gray flint . . 1 6 



Upper Division Arkansas Novaculite. 



12. Concretionary resistant gray harsh novaculite 



weathers porous (calcareous) white and 

 gritty 26 



*° Personal correspondence. 



