CLAYS OF NEW YORK 



623 



There are three districts recognized. 



The section exhibited by the clay deposits involves the following 

 members, beginning at the bottom. 



1 Earitan potters' claj bed 



2 Raritan fire clay bed 



3 Fire sand 



4 "Woodbridge fire clay, a most important bed 



5 Pipe clay 



6 A bed of feldspar, commonly called kaolin, being really a 

 mixture of kaolinite with white qnartzose sand, and fragments of 

 quartz which are rounded on their edges 



7 Another kaolin bed 



8 South Amboy fire clay bed, 20 feet thick 



9 Stoneware clay 



These clays form the basis of an important fire brick and pottery 

 industry. 



The Quaternary brick clays are abundant in the region around 

 Hackensack, near 'New York city. 



Recently important beds of light or white burning plastic clays 

 have been developed in the Tertiary formation of southeastern ISTew 



Jersey. 



NehrasJca 

 The clay resources of this state are similar to those of Kansas. 

 Brick clays are used locally in the vicinity of the more important 

 towns. A fine kaolin-like clay is found on Pine creek in Cherry co. 



North Carolina^ 

 The clay deposits of IsTorth Carolina may be divided into 

 Residual: kaolins, fire clays, and impure clays 

 Sedimentary: coastal plain clays, of Cretaceous, or Tertiary age 

 Sedimentary surface clays (for brick and pottery) are found 



mainly along the streams and low lands in the Piedmont plateau 



and mountain counties. 



» 



1 N. C. geol. surv. H. Ries. Clays mid clay industry of 'North Carolina, 



'bulletin no. 13.. 



