GEOLOGICAL RECORD OX THE OCEAX FLOOR 



143 



Fig. 8. Average frequency of haze (solid aerosol) during northern winter 

 (upper graph) and summer season (lower graph). The extensive transport of dust 

 from the African continent and the Arabian peninsula is clearly reflected, and the 

 importance of the Sonoran and Andean deserts as supply areas for the Pacific 

 sediments is indicated. The haze area in northwestern Europe is probably due to 

 industrial smoke production (Arrhenius, 1959a). 



of the quartz maxima in the Northern and Southern Hemispheres 

 is, according to the same authors, due to the smaller areas of arid 

 lands in the Southern Hemisphere. In addition, it appears that the 

 distance from the coast has an important effect on the rate of 

 fallout of quartz and other windborne minerals. 



The concentration values of up to 20% quartz in the northern 



