This course aims providing the student with the basic knowledge to be able to analyse, evaluate and interpret the diagenetic features and processes of carbonate and siliciclastic rocks and their geochemical signature for diagenetic, paleoclimatic and paleoceanographic studies.
Expected learning outcomes
The student will acquire the knowledge and practical experience to identify and interpret the diagenetic features of sedimentary rocks and to understand the geochemical signature of sedimentary rock samples that can be applied to diagenetic, paleoclimatic and paleoceanographic investigations.
Lesson period: Second semester
(In case of multiple editions, please check the period, as it may vary)
DIAGENESIS AND GEOCHEMISTRY OF SEDIMENTARY ROCKS Fundamental concepts of diagenesis, diagenetic environments, processes and products. Classifications of porosity, differences between siliciclastic and carbonate rock reservoirs. Importance of diagenesis of sedimentary rocks in industry (petroleum and water resources) and academia. Diagenesis of carbonate rocks in marine, meteoric and burial environments: processes of cementation, dissolution, neomorphism, recrystallization, dolomitization, dedolomitization, and silicification. Diagenesis of sandstone and mudstone: cementation by carbonate and clay minerals, compaction, dissolution, authigenic mineral formation. Geochemistry of sedimentary rocks: principle of stable isotope geochemistry. The use of stable Oxygen, Carbon, Hydrogen, Nitrogen, Sulphur isotopes in diagenesis, paleoclimatology and paleoceanography: The use of Sr isotopes and trace elements for the study of sedimentary rocks. Techniques for diagenetic investigations of sedimentary rocks: petrographic analysis, staining, cathodoluminescence, SEM, microprobe EDS and WDS, fluid inclusions, and stable isotopes geochemistry.