FIGURE 3.12. 



B -BIOGENIC 



J> • PVROGENIC iCHBONiCi 



ac ■ AMOCO OIL 



J I I I L 



12 TS J,T9 8.79 1 1 79 3 80 980 6.8) 



Trez Hir sediment time series. 



AC 



,F 



/' 



Mm 



FIGURE 3.13. 



Hydrocarbon compositions forming the basis of source 

 classification categories. 



53 



