Fig. 5


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GC-FID of hydrocarbons obtained during closed system pyrolysis of the boghead, Surmoulin SU2, Muse MU2, Lally LA2, and Igornay IG2 samples, representative of the groups defined in the results section. Numbers above peaks represent carbon number of the respective n-alkane. IS = internal standard; UCM: unresolved complex mixture.

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