APPENDIX B 



SEDIMENT DESCRIPTIONS OF SELECTED CORES 



Appendix B contains visual description and textural data of sediments contained in cores 

 from the four delineated borrow areas. Cumulative curves of selected samples from cores in 

 the areas are presented graphically. 



Core number, CERC identification number, water depth, and sample depth in core are 

 listed to the left. The cores are plotted in Figures 2, 27, 29, 31, and 32. 



Visual descriptions are based on both megascopic and microscopic examination. The 

 descriptive statement generally contains the following elements in the order listed: 



1. Color. 



2. Color code per Munsell Soil Color Charts (1954 edition).* 



3. Dominant size or size range. 



4. Major compositional element or elements with the dominant constituent listed first. 



5. Phrases identifying readily recognized constituent elements with an estimated 

 frequency of occurrence in terms of total particles. The frequency terms indicate 

 the following percentages: 



a. Abundant, 30 to 50 percent of total particles. 



b. Common, 10 to 30 percent of total particles. 



c. Sparse, 2 to 10 percent of total particles. 



d. Trace, less than 2 percent of total particles. 



6. Mean size and sorting (standard deviation) values are placed at the end of the visual 

 description. 



*Munsell Color Company, Inc., Baltimore, Maryland 



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