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What you can get from geochemical rock analyses:

    Organic facies

    marine, lacustrine, or terrigenous organic matter

    kerogen concentration and type

    oil or gas generating kerogen

    anoxic, suboxic, or oxic depositional environments

    Geologic age

    precise age if combined with biostratigraphy

    approximate age if based on geochemistry alone

    Kerogen maturity

    oil and gas generation and preservation limits

    overburden removal and missing section(faults and unconformities)

    geothermal gradient

    thermal events

    Data for oil - rock correlation

    Type of oil (and gas) generated

    waxy, marine, lacustrine, etc.

    Kerogen kinetics

    Presence of recycled, oxidized, or non-indigenous organic material

    Presence and correlation of migrated oil (seeps, reservoirs, migration paths)

Techniques most often used:

    Organic carbon (TOC)

    Rock-Eval Pyrolysis

    Kerogen microscopy (isolated kerogen or whole rock)

    vitrinite reflectance, TAI, kerogen type

    Solvent extraction

    Whole extract gc

    Liquid chromatography (saturates, aromatics, NSO's, asphaltenes)

    Saturate and aromatic biomarkers (gc/ms)

    Saturate and aromatic carbon isotopes

Porady, jak leczyć

Supporting techniques:

    High resolution C7 gc

    Elemental analysis (C, H, N, O, S) of kerogen

    Saturate and aromatic gc

    Ni and V content

    Saturate gc/ms/ms (detailed biomarkers)

    Compound specific isotopes (gc/IRMS)

    High temperature gc (C20 - C60)

    Sulfur isotopes

    Pyrolysis gc (of S1 and S2)

    Percent carbonate

    Percent sulfur

    Kinetic analysis of kerogen

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