APPENDIX A 



SEDIMENT DESCRIPTIONS 



Appendix A contains visual descriptions of sediment from cores and grab samples in the 

 study area. Sample locations are shown in Figure 2. 



Visual descriptions are based on both megascopic and microscopic examination. Color is 

 based on dry sample. 



Sediments are based on the Wentworth size-scale as follows: 



Sediment Size (mm) Phi 



gravel > 2 < — 1 



very coarse sand 1.0 to 2.0 to — 1 



coarse sand 0.5 to 1.0 1 to 0— 



medium sand 0.25 to 0.5 2 to 1- 



fine sand 0.125 to 0.25 3 to 2- 



very fine sand 0.0625 to 0.125 4 to 3- 



silt and mud < 0.0625 > 4 



Sortin g Terms* Phi 



very well-sorted „_ 



well-sorted _ __ 



0.80 



moderately well-sorted 



mode rately sorted . 



poorly sorted 2 QQ 



ver y poorly sorted 



extremely poorly sorted 



•Verbal sorting terms from Friedman (1962). 



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