Table 2. Primary sediment classes from the central New Jersey shelf. 



Type 



Lithology 



Description 



Quartz sand 



Sand and gravel 



Silt and silty 

 clay 



Clean to silty 

 sand 



Sand and gravel 



Quartz sand 



Typically very pale brown (10 yr 7/3)-^, fine to 

 coarse grain size; 1 to 5 percent shell (predomi- 

 nantly Spisula) , well to poorly sorted; silty in 

 places but predominantly clean; granules present 

 locally. 



Typically variable grayish-brown color; sand, 

 granules, and pebbles; shells comprise 1 to 10 

 percent; generally very poorly sorted; often 

 silty, which occurs in thin layers in most places; 

 frequently consists of reworked substrate. 



Typically gray (5 yr 6/1) but occasionally 

 brownish gray; mostly barren but contains shells 

 in places; washed residue may contain sand, mica, 

 and pieces of vegetation. 



Typically grayish brown (10 yr 6/1 to 10 yr 7/2); 

 occasionally yellowish or reddish-yellow, very 

 fine to fine sand; generally well sorted; mica- 

 ceous locally. 



Typically very light gray (5 yr 7/1) but often 

 grayish to reddish brown; very poorly sorted sand, 

 predominantly quartz; granules and pebbles con- 

 sist mostly of quartz and rock fragments. 



Typically very light gray (5 yr 7/1) but often 

 grayish to reddish brown; very similar to type E 

 but with little or no gravel; poorly sorted, 

 quartz predominant mineral . 



^Munsell Soil Color Code (Munsell Soil Color Charts, 1944 ed., Munsell 

 Color Co., Inc., Baltimore Md.). 



