G. D. Harris — Tertiary Geology of Maryland. 29 



No. 1. Yellowish sand 25-40 feet. 



2. Hard ferruginous layer 5 " 



3. Yellowish sand 15 " 



4. Ferruginous layer 1 foot. 



5. Light and dark, yellow and blue sandy clay. 15 feet. 



6. Zone g ; grayish sand . . 4 " 



1. Blue clay 4 " 



8. Fossiliferous sand ... . . 1 foot. 



9. Bluish sandy clay ... 15 feet. 



/Section IS. — At the southern terminus of the cliffs between 

 Little Cove point and Drum point, Zone g is 10 feet above tide, 

 and contains the same fauna as that last mentioned. 



The following section is a generalization of all the foregoing 

 sections, taken from 14 to 1 in a descending order. An at- 

 tempt is moreover made to correlate as far as possible from 

 personal observation the various fossiliferous zones here repre- 

 sented with those farther west on the Patuxent, and those of 

 the " Eastern shore." 



No. 1. Yellowish sand 25-40 feet. 



2. Hard ferruginous layer. (Fossiliferous?) 5 " 



3. Yellowish, bluish, or even black sandy clay. 33 " 



4. Zone g _ 3-4 " 



This together with the two fossiliferous 

 layers, Nos. 6 and 8, contain a typical 

 St. Mary's Miocene fauna. 



5. Blue clay 4-5 " 



6. Fossiliferous sand 1 foot. 



7. Blue clay 4 feet. 



8. Fossiliferous sand 1 foot. 



9. Blue sandy clay 12 feet + 



10. Zone f; yellow fossiliferous sand generally, 6-15 " 



11. Yellowish and grayish sand, few fossils 20-25 " 



12. Zone e ; yellowish or grayish sand.. 4-8 " 



The substance of this bed as well as No. 10, 

 is sometimes highly ferruginous and very 

 hard. Nos. 10 and 12 are intimately re- 

 lated, and represent one faunal horizon. 

 This occurs also at Jones's wharf on the 

 Patuxent, and at Barker's landing on the 

 Choptank river, about five miles south- 

 east of Easton, Md. At Greenborough, 

 Caroline county, very nearly the same 

 horizon is represented, though it may be 

 slightly higher. 



13. Light bluish sand and clay, often weathered 



yellowish 20-25 " 



14. Zone dj compact bluish or yellowish sandy 



clay 3-5 " + 



