в 



Fig. 391. Bottom soils of Sea of Okhotsk (Bezru- 

 kov). 1 Boulder-shingle-gravel deposits ; 2 Sands ; 

 3 Aleurites ; 4 Aleurites-clay-diatomaceous oozes ; 

 6 Aleurites-clay oozes without silica; 7 Outcrops 

 of rock. 



1Ж 



П6 nS 150 !3г 15* 156 158 ISO 'б? 4* !Sl 



Fig. 392. Distribution of amorphous silica in surface 

 layer of soils of Sea of Ohkotsk. 1 Less than 10 per cent; 

 2 From 10 to 20; 5 From 20 to 30; 4 From 30 to 40; 5 

 From 40 to 50; 6 More than 50 per cent (Bezrukov, 1955). 



