PLIOCEXE. (?) IT 5 



On Calhoun Creek about 1^ miles northwest of Suffolk Waterworks 

 there is an exposure of marl 12 to 14 feet thick containing shells in a sand 

 matrix. 



Al)out 11/2 miles north of Suffolk the new Tidewater Eailroad has made 

 a cut 8 to 12 feet in depth in which there is an excellent exposure of Miocene 

 fossils preserved in a matrix of blue sand. In this vicinity the greatest out- 

 crop of the fossil bed is about 6 feet. It may extend below the level of the 

 cut. Above it there is Pleistocene buff to gray sand with a rather persistent 

 line of coarse cobbles immediately at the base and resting on the shell marl. 

 Many species of fossils have been obtained at this locality. 



XIV. Section at SuffoU- }Vaterworl-s, about one mile west from Sujfoll- 



on Smith Creel'. 



Feet 

 Pleistocene Yellow sand carrying considerable gravel 4-5 



Miocene. Yorktown Yellow sandy marl with numerous fairly well 



preserved shells and large quantities of shell 

 fraanients 6-8 



Total 13 



Below dam of pond which supplies city of Suffolk M'ith water there is an 

 exposure of 1)1 ue sandy earth containing many well preserved fossils. 



Many Yorktown fossils in excellent condition were collected along 

 ditches in edge of Dismal Swamp about 1 mile east of Suffolk from matrix 

 of blue sand about 3 feet below the surface. 



PLIOCENE. (?) 



The Virginia deposits tentatively referred to the Pliocene belong to the 

 Lafayette formation. They are developed in the extreme western portion of 

 the Coastal Plain near the Piedmont border and consist of gravels and loams 

 which accumulated in shallow marine or estuarine waters in proximity to the 

 shore. Certain marine fossiliferous beds exposed along the Dismal Swamp 

 canals in the extremely southeastern part of the State were formerly thought 

 to represent a marine facies of the Pliocene and have been so described'^' but 

 more recent investigations have shown them to be of later date. 



aProc. Acad. Nat. Sci. Phila. for 1S98, pp. 414-424, 1899. Norfolk Folio. U. S. 

 Geol. Survey No. 80, p. 3, 1902. 



