New approaches to assess thermal evolution in sedimentary basins: towards integration of source rock Raman spectroscopy assisted by machine learning and carbonate thermo-chronometry by Δ47/U-Pb
ProjectTemperature is a critical parameter governing the evolution of sedimentary basins.
Conventional thermal proxies (e.g. vitrinite reflectance, apatite fission - tracks) may be affected by limitations and call for new complementary methods.
Raman spectroscopy on kerogen in the diagenetic realm (T<200°C) has recently provided robust correlation with vitrinite, though further validation is required. Also carbonate thermo-chronology, from clumped isotopes (Δ47) and U-Pb dating (LA - ICP
- MS), was implemented, though a pplication to rocks suffering T>100°C remains underexplored. These methods may capture:
1) the thermal maximum recorded by any organic - rich rock;
2) the thermal conditions prevailing when carbonates precipitated.
Lower Jurassic source rocks overlying Upper Triassic carbonate - cemented siliciclastic reservoirs from the Paris Basin will be investigated to validate a workflow merging conventional and new methods, to constrain the basin temperature - time evolution and assist thermal modeling. The workflow will reduce uncertainties in the assessment of fossil and renewable energy potential in basins including carbonate and siliciclastic successions.
Conventional thermal proxies (e.g. vitrinite reflectance, apatite fission - tracks) may be affected by limitations and call for new complementary methods.
Raman spectroscopy on kerogen in the diagenetic realm (T<200°C) has recently provided robust correlation with vitrinite, though further validation is required. Also carbonate thermo-chronology, from clumped isotopes (Δ47) and U-Pb dating (LA - ICP
- MS), was implemented, though a pplication to rocks suffering T>100°C remains underexplored. These methods may capture:
1) the thermal maximum recorded by any organic - rich rock;
2) the thermal conditions prevailing when carbonates precipitated.
Lower Jurassic source rocks overlying Upper Triassic carbonate - cemented siliciclastic reservoirs from the Paris Basin will be investigated to validate a workflow merging conventional and new methods, to constrain the basin temperature - time evolution and assist thermal modeling. The workflow will reduce uncertainties in the assessment of fossil and renewable energy potential in basins including carbonate and siliciclastic successions.