BGR Bundesanstalt für Geowissenschaften und Rohstoffe

Organic Geochemistry and Petrography

In the Organic Geochemistry and Petrography sub-division BGR-scientists direct their work on a better understanding of the energy resources coal and petroleum. In addition to applied aspects such as maturity determinations and assessments of the hydrocarbon potential of rocks, advanced geochemical methods are used to reconstruct organic-rich palaeoenvironments.

Contact

    
Dr. Martin Blumenberg
Phone: +49-(0)511-643-2853
Fax: +49-(0)511-643-3664

Fossil energy resources: Petroleum

Petroleum is still one of the most important fossil energy resources and the investigation of known and the exploration of new potential reservoirs with organic geochemical methods are key tasks of the BGR.

In the frame of source rock studies BGR-scientists determine the amount and type of organic material as well as the content of organic carbon. The maturity of the rock material is assessed with the help of Rock Eval Pyrolysis. Additionally, with solvents the extractable portion of the organic matter is obtained and the composition of the extracts is studied after using chromatographic methods. The correlation of petroleum and source rocks is performed after chromatographic separation of petroleum extracts and the comparison of biomarker patterns (“fingerprint”) after applying coupled gas chromatography-mass spectrometry (GC-MS(MS))

Contact 1:

    
Dr. Martin Blumenberg
Phone: +49-(0)511-643-2853
Fax: +49-(0)511-643-3664

Contact 2:

    
Dr. Christian Ostertag-Henning
Phone: +49-(0)511-643-2884
Fax: +49-(0)511-643-3664

Fossil energy resources: Coal

In addition to petroleum, coal is another relevant fossil energy resource. BGR-scientists study and analyse different coal-petrographic and -technological parameters of intact, oxidized, and thermally altered brown- and hard coals implementing among others microphotometric and fuel chemical methods.

With the aid of macroscopic analyses of brown- and hard coals the composition of coals in terms of lithotypes is determined, allowing characterization of coal seams and their lateral correlation.

The identification of type, origin and degree of preservation of the organic matter enclosed in coals is realized using microscopic techniques, (i.e. incident light and fluorescence microscopy, confocal laser scanning microscopy).

The composition of coals and coal blends is determined with quantitative maceral group-, microlithotype-, and coal rank analyses after DIN.

Degree of coalification in coals is determined by applying microphotometric analyses of huminite and vitrinite reflectance. Thermal maturity of organic matter enclosed in dirt bands or parting of coal seams and in the surrounding rocks is accomplished after ASTM as well as supported with aid of spectral fluorescence analyses, (Teichmüller, 1987). Quality assurance certification covers participation in the ICCP DOMVR and SCAP Accreditation Programs since 2004, (http://www.iccop.org/accreditation/accredited-petrographers/).

Immediate analyses and determinations of gross calorific value allow an identification of the coal technological quality after DIN. Quality assurance certification covers participation in DCC proficiency testing interlaboratory tests since 2006, (http://www.dcc-germany.org/en/Interlaboratorytest).

Contact

    
Jolanta Kus
Phone: +49-(0)511-643-2629
Fax: +49-(0)511-643-3664

Reconstruction of organic-rich depositional settings (black shales)

Organic compounds may also be valuable signatures for reconstructions of palaeoenvironments. With the use of biomarkers and their quantities and isotopic properties BGR-scientists can draw conclusions on the environmental conditions when the deposits were formed. This may help for a better understanding of potential source rocks and the conditions during the respective geological times.

For biomarker analyses extractions, hydrolyses, chromatographic fractionations, and GC-MS (GC-FID) as well as compound specific stable carbon isotope measurements are performed.

Contact 1:

    
Dr. Martin Blumenberg
Phone: +49-(0)511-643-2853
Fax: +49-(0)511-643-3664

Contact 2:

    
Dr. Christian Ostertag-Henning
Phone: +49-(0)511-643-2884
Fax: +49-(0)511-643-3664

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