Biogenic organics oxygen-containing

In addition to hydrocarbons, biogenic processes also produce a number of oxygen-containing organics. One of the most important appears to be 2-methyl-3-buten-2-ol (MBO), first identified in a forested area by Goldan et al. (1993) ... 

FIGURE 6.26 Structures of some oxygen-containing organics with biogenic emission sources. 

In short, while a variety of oxygen-containing biogenic organics have been obseived to be generated from plants and most are likely direct emissions, care must be taken to distinguish such direct emissions from... 

Whole-rock samples of mudrock from both shallowly and deeply buried rocks have similar carbon isotopic ratios, but distinctly different oxygen isotopic ratios (Fig. 8). 5 C values for most samples are from -2 to +l%o, values typical of marine biogenic carbonate or detrital clasts of marine limestone. One anomalously light sample (-8%o) in the Antog-nola Formation, and other samples with 5 C values less than -2%o, contain some authigenic carbon derived from organic material. 

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