100 



300 



600 



800 



1000 



1200 



1300 



• -laboratory measurements on samples 

 from DSDPSite 222 



D-Gulf Coast shale, (Dickinson, 1953) 



I V -Shale (Vassoevlch In Rieke and 



Chlllngarlan, 1974 p 40, Figure 16) 



A 



I M-Mudstone from Japan (Magara, 1958) 



Figure 10. Porosity versus depth in terrigenous sediments. 



38 



