Authigene Karbonate und CO2-Quellen in Reservoirgesteinen der CO2 Provinz im Niedersächsischen Becken

• Applicant: Privatdozent Dr. Reiner Botz
• Subject Area: Mineralogy, Petrology and Geochemistry
• Term: from 2002 to 2005
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 5368463

... We propose a detailed stable carbon- and oxygen isotope study of authigenic minerals in the Zechstein carbonate rocks. In combination with burial and temperature histories, the results will allow to define their carbon source(s) and infer reaction temperatures of diagenetic (carbonate-forming) processes. Moreover, we try to relate the late(st) (i.e. youngest) authigenic carbonate mineralisations to the gas (molecular and isotope) composition in the reservoirs. New analytical techniques (micro-scaled sample preparation for isotope analyses of carbonates by laser ablation) and carbon isotope analyses of gases (CO2, CH4) from inclusions in carbonate minerals will be used. If the variations of the CO2 sources during rock history are known, gas compositions and gas quantities can be modelled using basin modelling software.

• DFG Programme: Priority Programmes
• Subproject of: SPP 1135: Dynamics of Sedimentary Systems under Varying Stress Regimes: The Example of the Central European Basin System
• Participating Persons: Professor Dr. Ralf Littke; Privatdozent Dr. Mark Schmidt