Microbiostratigraphy of the Sarvak Formation (Cenomanian) in the Aghar and Homa wells in sub-coastal and coastal Fars, (south of Iran)

Micropalaeontological studies can provide important information on how strata correlate, age calibration, palaeoenvironmental determination, palaeobiology, evolutionary relationships of the taxa being studied, palaeogeography, and the recognition of global or regional geological events in a local succession. However, the value of micropalaeontological studies is constrained by the accuracy with which taxa are identified, the accuracy of their age interpretation, and the use of up-to-date taxonomic concepts, supported by modern research literature. Best practice implies attention to these and other details, which we illustrate with reference to published research on larger benthic foraminifera (especially orbitolinids) from the mid-Cretaceous succession of the Zagros Mountains in the Middle East. It is demonstrated that whilst there are many excellent studies, a significant number could offer more value if they were to use precise, modern taxonomic concepts applied to well-illustrated and documented unequivocal material. Poorly founded age assignments and misidentifications can lead to confusion on assessment of true stratigraphic ranges and evolutionary patterns. Moreover, they can lead to miscorrelation and erroneous modelling of the subsurface in a hydrocarbon-rich region. Integrated studies of larger benthic foraminifera with other age-diagnostic fossil groups or chemostratigraphic methods would further enhance their utility. These recommendations are applicable to micropalaeontological studies on microfossils of any type and age, from any part of the world, but we hope will promote additional rigour in studies on the micropalaeontology of the Mesozoic and Cenozoic succession of the Zagros that still have much to impart.

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Microbiostratigraphy of the Sarvak Formation (Cenomanian) in the Aghar and Homa wells in sub-coastal and coastal Fars, (south of Iran)

Cited by 5 publications

References 18 publications

Biozonation, microfacies analysis and depositional environment of the Cenomanian sediments (Sarvak Formation) in South Zagros Basin (SW Iran)

Biozonation, microfacies analysis and depositional environment of the Cenomanian sediments (Sarvak Formation) in South Zagros Basin (SW Iran)

Facies analysis, depositional sequences and platform evolution of the Sarvak Formation (late Albian-Turonian) in the Zagros Basin, West of Iran

Developing Best Practice in Micropalaeontology: Examples From the Mid-Cretaceous of the Zagros Mountains

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