F-15 

 Thirty-five gravity cores were split, measured, and described 

 according to standard L-DGO prodcedures. Samples were taken 

 from the tops and within each core. Each sample was analyzed 

 for size distribution. The greater than 63 micron fraction 

 was determined by wet sieving. The carbonate content of 

 core tops was measured by manometer recording the amount of 

 carbon dioxide released by HCl. Dredge samples were archived 

 and sampled for similar analysis as well as coarse fraction 

 studies and smear slide analysis. Different samples from the 

 same dredge were given letter designations. All the dredge 

 samples were also analyzed biostratigraphically using foram- 

 inifera and calcareous nannofossils. Samples were disaggre- 

 gated using Calgon and wet sieved at 63 microns for foramin- 

 iferal analysis. Smear slides and light microscopy were 

 used for the calcareous nannofossil age determinations. For 

 the most part, a magnification of lOOOX was used. 



Additional geologic information was obtained from the 

 photographic record and from acoustic characteristics of 

 the substrate. This information is particularly helpful 

 in that coring and dredging cannot provide complete coverage 

 of the canyons. Also failure of the ship's radar system 

 during cruise E-2B-79 made it impossible to carry out a 

 coring program in Oceanographer Canyon. Because of our 

 position in crowded Georges Bank shipping lanes and inclement 

 weather (fog) the chief scientists and ship's officers felt 

 it was too dangerous to continue. Sediments from dredges in 

 this canyon were sampled and analyzed in order to obtain 

 some geologic information. Unfortionately the dredges fre- 



