Maryland Geological Survey 



73 



IV. Well Section at Sparrows Point, Baltimore County, Well No. 4, beginning 



10 feet above tide. 



Recent . . . 

 Pleistocene. 

 Talbot 



Cretaceous. 



Patapsco 



Keet. Inches. 



. Artificial filling 10 



'Medium coarse buff sand 12 



Coarse light drab sand 53 



Drab calcareous clay, with remains of marine 



. invertebrates 20 



"Light colored plastic clay 22 



Very coarse gravel 23 



White sand 5 



Fine gravel 5 



Hard brown clay 15 



Fine buff sand 13 



Fine white water-bearing sand 32 



Very coarse gravel 8 



Hard sticky fine red clay 32 



Coarse water-bearing sand 12 



Data from the neighboring coke oven well 

 carries the section beyond this point. Begin- 

 ning at 220 feet from surface, near base of the 

 foregoing member. 



I Red clay 



I White sand 



Red clay 



[Hard sand 



fTough red clay 



Arundel (?H " Flint rock " (probably iron carbonate) 



[Soft blue clay, iron nodules at one level 



r Gray sand 21 



Patuxent . J Red clay 6 



[^Unknown 71 



Crystalline rocks.Granite at 495 



3% 

 8% 



V. •Section of Baltimore and Ohio Railway cutting east of Bay Yiexo Station, 

 Baltimore County, beginning at 130 feet above tide. 



Cretaceous. Feet. 



Patapsco (?).Buff, ferruginous sands, often indurated and capping 



the hilltop 10-20 



Arundel Drab stratified leaf-bearing clays, occupying a depres- 

 sion in the surface of the Patuxent ^ 0-15 



rWhite and varicolored, more or less indurated, cross 

 Patuxent . J bedded sands and gravels, somewhat argillaceous and 

 1 with lenses of sandy clay to the level of the railway 

 L track 5-20 



Total 53 



^ See list of species in Tables of Distribution. 



