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Organic compounds: environmental indicators (view source)
Revision as of 16:52, 5 February 2014
, 16:52, 5 February 2014→Irregular homohopanes
Irregular distributions of the C<sub>32</sub>–C<sub>35</sub> homohopanes are associated with carbonates.<ref name=ch08r59 /> and/or more reducing conditions<ref name=ch08r39 /> Unusually large amounts of the C<sub>31</sub> homohopanes are sometimes associated with coals and coaly material.<ref name=ch08r59 />
Irregular distributions of the C<sub>32</sub>–C<sub>35</sub> homohopanes are associated with carbonates.<ref name=ch08r59 /> and/or more reducing conditions<ref name=ch08r39 /> Unusually large amounts of the C<sub>31</sub> homohopanes are sometimes associated with coals and coaly material.<ref name=ch08r59 />
[[:[[file:oiloil-and-oilsource-rock-correlations_fig8-27.png|Figure 5]] shows m/z 191 mass chromatograms for two sediment extracts from the Brac-1 well (Croatia) showing irregular homohopane distributions [relative enhancement of the C<sub>35</sub> species (left) and C<sub>34</sub> species (right)]. We would expect the oils sourced from these sediments to show these same characteristics.
[[:file:oiloil-and-oilsource-rock-correlations_fig8-27.png|Figure 5]] shows m/z 191 mass chromatograms for two sediment extracts from the Brac-1 well (Croatia) showing irregular homohopane distributions [relative enhancement of the C<sub>35</sub> species (left) and C<sub>34</sub> species (right)]. We would expect the oils sourced from these sediments to show these same characteristics.
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