TABLE IV (continued) 



MINERALS AND ORGANISMS IN ARCTIC BOTTOM SEDIMENTS 



"NET" 

 Sample 



LIGHT MINERALS 



HEAVY MINERALS 



ROCKS 



ORGANISMS 



No. 



Quartz Feldspar 



Mica 



Pyriboles 



Others 





Siliceous 



Calcareous 



Chitinous 



571 



R 



R 



b(R) 











F; Ech sp; Moll 

 frags 





589 



C 



C 



m(R); b 



(R) 



v. gl 



qtzte; gr; bas; sch 





F; Bra 



Alg 



590 



P 



P 



m; b 



(R) 



ol(?) 



qtzte; sch; bas; v. gl 





F; Ostr; Moll 



Alg 



594 



C 



C 



m(R); b(C) 



(P) 





qtzte; gn; sch; bas 





F 



Alg 



596 



R 



VR 



B(R) 



(R) 





sch; pum; bas 



Di(R) 



F 



Alg 



600 













sch; v. gl; pum 





F(R) 





601 













sch; v. gl; pum(A) 





Moll 



Cr(R); Alg(R) 



605 



P 











qtzte; sch; bas; v. gl 





F; Ostr 



Alg(R) 



607 













sch 





Moll frags 





608 













sch; v. gl; pum 





F(R); Moll 



Alg(R) 



609 



A 



C 



m; b(C) 



hbl; etc(P) 



tr; mag 







F(R) 



Alg 



610 



C 



C 



m; b(C) 



(P) 



tr; mag 



pum 



Di(C) 



F; Moll 



Alg; wm; wood 



612 



P 



R 



b 



(R) 



tr; mag 



sch(C) 



Di 



F; Ostr 



Alg 



615 













si; sch; gn 





Moll; Alg; Bry 





ABBREVIATIONS: 



Alg Algae 



aug augite 



b biotite 



bas basalt 



Bra Brachiopoda 



Bry Bryozoa 



Cr Crustacea 



Di Diatoms 



Ech Echinoids 



F Foraminifera 



frag fragment 



f.sc fish scales 



gab gabbro 



gn gneiss 



gr granite 



hbl hornblende 



hyp hypersthene 



m muscotite 



mag magnetite 



Moll Mollusca 



ol olivine 



Ostr Ostracoda 



pum pumice 



qtzte quartzite 



sen schist 



si slate 



sp sponge 



spic spicule 



spin spine 



tr tremolite 



v.gl volcanic glass 



wm worm trails or tubes 



FREQUENCY SYMBOLS: A Abundant C Common P Present 



R. . . .Rare If no frequency symbol is used, item is considered as present 



Grunow is present in most of the Bering Sea samples; and 

 Melosira sulcata (Ehreriberg) was identified in all the Kotzebue 

 Sound samples. 



There is little correlation between the abundance and type 

 of living diatoms obtained from the overlying water in net 

 hauls by Phifer 10 and the number and species present in the 

 bottom sediment. For example, Coscinodiscus centralis , 

 although widely distributed, is found in net haule in only 

 relatively small numbers. Many diatoms which are abundant 

 in the water are completely absent from the sediments. These 

 are generally the filamentous forms whose frustules are 



