Hydrographiques) or in the scientific literature, where exact positions 

 are given and some evaluation can be made of their validity (Figures 

 1,2,3,4,10,11, and 12). 



Nautical chart notations are compiled region by region from foreign 

 and domestic charts of all scales from 1:5,000 harbor charts to 

 1:10,000,000 charts covering large ocean areas. The compilation bases 

 are acetate or tissue overlays placed on large or medium scale 

 nautical charts on which the notations are assembled from all available 

 charts which cover portions of the area of the base chart. The numbers 

 and nationality of the chart sources are listed on each overlay, and 

 notes indicate overlaps on other compilation bases. When completed, 

 photostatic reductions of the overlays are made. These are filed 

 together with other miscellaneous geologic data numerically in folders, 

 each of which corresponds to a single sheet of the worldwide strategic 

 plotting chart series. 



V. Collection, Filing, and Control of Bottom Sediment Data 



Bottom sediment data are analyzed and published in such a great 

 variety of forms that coding or conversion of data to machine punch 

 cards is impractical until some international agreement is reached 

 on uniformity in reporting geologic data, for this and other reasons, 

 manual filing of data on 5" x 8" index cards was adopted. 



A. Collection of data -- Bottom sediment data are assembled 

 through systematic search of the published scientific literature and by 

 acquisition, whenever possible, of unpublished data reports, field 

 notes, laboratory analysis summary sheets, survey data records, 

 intelligence reports, and ship logs. Progress in the search is recorded 

 on a 3" X 5" card, one for each journal or series of reports examined 

 which contains bottom sediment data. On the cards are listed the 

 volumes, years, and issue numbers which have been searched and 

 from which all data have been abstracted. The following journals 

 often contain submarine geologic information and have been partially 

 or completely searched to date. This is far from a complete list, 

 and new ones are added when found. It does not include the many 

 sources of data which are not published serially, 



American Association of Petroleum Geologists, Bulletin 



American Journal of Science 



Antarctic Record (Japan) 



Archiv der Deutschen Seewarte 



Australian Journal of Marine and Freshwater Research 



