character at the end of the field number identifies one of three replicates 
taken at each station for trace-metal analysis. Alternatively, the notation 
BL at the end of the field number indicates a blended composite sample made up 
of equal weights from each of the three replicates. Field numbers ending in X 
indicate that analyses were performed on the fraction of sediment finer than 
60 um. 
GRAIN-SIZE ANALYSIS TECHNIQUES 
Textural analyses were performed on wet sediments to avoid the formation 
of clay aggregates. Homogenized samples were wet-sieved by using a dispersant 
(5-percent Calgon) through a 63-ym sieve to remove silt and clay. The coarse 
fraction (containing shells, if present) was dried, weighed, and then sieved 
through a 2-mm screen to remove the gravel, which was not further sized. The 
sand fraction was analyzed with a Rapid Sediment Analyzer (Schlee, 1966). A 
gravimetric determination of the silts and clays was made by filtering. The 
size distribution of the silts and clays was determined with a Coulter 
Counter. Statistical parameters (mean, median, standard deviation, and so 
forth) were determined by the method of moments (Krumbein and Pettijohn, 
1938). All textural data are expressed in phi ($) units, which are defined as 
-LogyD where D is the grain diameter in millimeters. 
Samples from sediment traps, cores, and depth profiles from grab samples 
were often too small for a complete textural analysis. In such cases, the 
samples were passed through a 60-um nylon sieve and the percentage of dry 
sediment coarser and finer than 60 um was determined gravimetrically. 
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