It is generally accepted that the preservation conditions of calcitic belemnite rostra, which are distinguished by their original low-magnesium calcite composition, makes them relatively stable and resistant to diagenetic
alteration (Veizer, 1974; Sslen, 1989; Podhala et al.
The OS layers have only locally slightly changed in the diagenetic
processes, whereas the barren limestone interlayers are strongly enriched with MgO and depleted of CaO that is caused by diagenetic
The role of organic matter in the geosphere is difficult to access isotopically as it results from a complex mixture of source organisms, biosynthetic pathways, and diagenetic
While kaolinite and smectite minerals may be stable at low temperature, illite and quartz are stable even at higher diagenetic
2005) and can be formed by either authigenic or diagenetic
processes related to a chemical, physical, or biological change after its initial deposition.
dolomitization is one of diagenetic
feature has been affected on this microfacies.
processes, such as compaction, cementation, dolomitization and bioturbation, were also observed in Amb Formation.
processes that have affected the Arab-D reservoir include dolomitization, leaching and recrystallization, cementation, compaction and fracturing.
Shells undergo diagenetic
transfomaation during burial and that transformation tilters surface chemistry and ultimately the dissolvability of the shell mineral.
changes at the nanometre scale can be seen in corals from the Norian, indicating that one must exercise caution when interpreting isotopic data in the fossils.
It is well established that bone is susceptible to diagenetic
contamination from the burial environment (Budd et al.
They have further suggested that the variation of Cerium anomalies is influenced by a number of factors, including terrigenous input, depositional environment and diagenetic