Can the inorganic carbon isotopes measured in a sequence of deep-water profiles dominated by black shale be used as a stratigraphic correlation? If the absolute values are affected (possibly more negatively than shallow-water carbonates), can the isotopic trends be correlated?
I am a bit skeptical. We studied the Early Paleozoic Graptolite Shales which have almost worldwide extension on different continents and which are also of interest as "hot shales" (U) and deposits of a variegated "bunch" of rare metals. Even there facies the changes in this rather homogeneous argillaceous facies did not provide a good platform for a isotope stratigraphy. Chemical elements used as ratios such as V/Cr or NI/Co are in some cases much more enlightening than C isotopes, only.
HGD
Yes, it is possible to differentiate the oil characteristics and original matrix (shallow and deep, riverine or marine) by the isotopes, but do you need an oil biblioteca to cross correlate ones with others. As an example the riverine oil from paleo lakes of African basins has similarity of oils from South America Paleo lakes, but is very tiny differences only identified with oil DNA isotopes. Mr. Craig Schiefelbein ([email protected]) of Geochemical Solutions International did this isotopic analysis.
Yes, it is possible to differentiate the oil characteristics and original matrix (shallow and deep, riverine or marine) by the isotopes, but do you need an oil biblioteca to cross correlate ones with others. As an example the riverine oil from paleo lakes of African basins has similarity of oils from South America Paleo lakes, but is very tiny differences only identified with oil DNA isotopes. Mr. Craig Schiefelbein ([email protected]) of Geochemical Solutions International did this isotopic analysis.
Yes, it is possible to differentiate the oil characteristics and original matrix (shallow and deep, riverine or marine) by the isotopes, but do you need an oil biblioteca to cross correlate ones with others. As an example the riverine oil from paleo lakes of African basins has similarity of oils from South America Paleo lakes, but is very tiny differences only identified with oil DNA isotopes. Mr. Craig Schiefelbein ([email protected]) of Geochemical Solutions International did this isotopic analysis to separate oils from Pre-salt to the post-salt basins.
Yes, it is possible to differentiate the oil characteristics and original matrix (shallow and deep, riverine or marine) by the isotopes, but do you need an oil biblioteca to cross correlate ones with others. As an example the riverine oil from paleo lakes of African basins has similarity of oils from South America Paleo lakes, but is very tiny differences only identified with oil DNA isotopes. Mr. Craig Schiefelbein ([email protected]) of Geochemical Solutions International did this isotopic analysis to separate oils from Pre-salt to the post-salt basins.
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