Table 3. Lithologic classification of major sediment categories in nortJi Florida. 



Classification 



Recognized at: 



Major litliologic characteristics 



Remarks 



Type 



Cape 



Fort 







Canaveral 



Pierce 







A 



yes 



yes 



Sand, quartzose; fine to coarse, 

 moderately well to well sorted. 



Carbonate content 15 percent; 

 phosphorite grains locally abundant. 



F 



yes' 



yes^ 



Sand, quartzose; verj' fine to 

 fine, silty, poorly sorted. 



Benthic forams; ostracods common; 

 mica and heavyminerals locally 

 abundant. 



G 



no^ 



no 



Sand, quartzose; shelly, 

 and sandy shell hash. 



Mulinia lateralis abundant; uniform 

 white to ivory or light brown in 

 color. 



L 



no 



no 



Sand, calcareous; silty fine. 



Silt and clay particles are both 

 degraded biogenic carbonates and 

 terrigenous material. 



M 



no 



no 



Silt, dolomitic; and 

 Sand, quartzose-phosphatic 



Shell fragments absent; dolomite 

 grains show various stages of 

 disintegration. 



U^ 



no 



no 



Clay, green; (desiccated). 

 Clay, brown and black; fissile. 

 Sand, fine; poorly sorted. 



Carbonate molds common. 



Similar to Type F; occurs in patches 

 on the shelf. 



1. Fine, silty, poorly sorted sands at Cape Canaveral classified as Type H and includes clayey silts. 



2. Fine, silty, poorly sorted sand at Fort Pierce identified as Type U. 



3. Quartzose shell sands and shell hashes at Cape Canaveral included with Type A sediments. 



4. Unclassified. 



small amounts of calcareous material (usually < 15 percent of total sand fraction) and 

 displays little variation in textural and compositional characteristics within the survey area. 

 Towards the soutliern limits of the survey area type A becomes increasingly enriched in 

 biogenic constituents and grades into medium to coarse, quartzose-calcareous sand at Cape 

 Canaveral. The Cape Canaveral type A sand, described by Field and Duane (1974), is the 

 central Florida facies of tiie Florida inner slielf modern surficial sand sheet, and represents a 

 transition zone between the type A calcareous sands of the south and the quartzose sands 

 discussed in this study. 



Mean grain size of type A sand in the study area ranges from the upper limits of very fine 

 sand cl" (0.125 milHmeters; 3.0 phi), to the upper hmits of medium sand class (0.500 

 millimeters; 1.0 phi). Most samples have a mean size between 0.5 millimeters (0.1 phi) and 

 0.177 millimeters (2.5 phi); a few samples have a coarse mean grain size. Sorting of these 

 sands is good relative to other lithologies within the survey area and to type A deposits at 



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