Stanley A.J. Pocock, 1987. "Identification and Recording of Particulate Sedimentary Organic Matter", How to Assess Maturation and Paleotemperatures, F. L. Staplin, W. G. Dow, C. W. D. Milner, D.I. O’Connor, S.A.J. Pocock, P. van Gijzel, D.H. Welte, M.A. Yükler
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The identification of the different elements of plant-derived particulate organic matter occurring in mixtures in clastic and carbonate sediments is an extremely complex, and sometimes even impossible, task. The present approach to the identification of these materials is relatively new, and there is still much to be learned. As yet, our attention has been concentrated almost exclusively upon clastic sediments, and we know very little of conditions determining deposition and preservation of organic materials in carbonate sediments. Added to our present lack of knowledge, is the fact that anybody working in this field has to be a bit of a know-all, since he or she has to be conversant with botany, and in particular detailed plant anatomy, palynology, sedimentology, geochemistry, stratigraphy, logging methods, mycology, bacteriology and biochemistry. Although it is obviously impossible to be expert in all these fields and any real progress can only be made by a team effort, it is nevertheless true that any expert in a particular field must have an interest in and be conversant with work in all of the other related fields, before he can make an effective contribution to particulate organic matter studies.
These notes are not aimed at producing instant organic matter experts. One cannot condense a textbook on plant anatomy and organic matter degradation into a few pages and, in any case, knowledge has to be gained by practical experience. What we do aim to do is to provide a practical introduction so that, with a little experience, the reader
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How to Assess Maturation and Paleotemperatures
The application of organic matter studies in petroleum exploration had its start with the recognition of “rank” in coal. During the period of 1900–1925, both physical and chemical methods were developed for determination of the degree of low grade metamorphism of particulate organic materials, or palynodebris in coals and other sediments. Measurements of the relative metamorphism (maturation level) which are based on physical properties are generally quick, cheap, and qualitative to semiquantitative. Those based on chemical analyses are less rapid and tend to be more quantitative. Each method has advantages and disadvantages and they often are combined. Papers included in this course consider methods based on particulate organic matter, reflectance, fluorescence, and geochemistry. A method for integrating the data into a three-dimensional model is included.