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MARINE BOTTOM SAMPLES OF LAST CRUISE OF CARNEGIE 



Table A. Summary of characteristics and composition of deep-sea 



Principal inorganic constituents- -(concluded) 

 Authigenic minerals- -(concluded) 

 Phosphate 

 Pyrite 

 Rock fragments, etc. 



Crystalline, sedimentary 

 Volcanic, glass 

 lapilli, scoria 

 pumice 



rock fragments 

 Magnetite, other (cosmic) 

 spherules 



^Only in one exceptional case. ''Includes finely divided remains of siliceous organisms. CQnly 

 in two exceptional cases; the usual maximum is not more than 5 per cent. ^^ Includes glauconitic and 

 other casts of shells of foraminifera, etc. e Always listed as hornblende, except for one reference to 



