Late Santonian-Early Maastrichtian calcareous nannofossils from marly deposits near Kerman (Central Iran)

نویسنده:
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سال
: 2012
چکیده: Abstract For the first time, the calcareous nannofossils of

marly deposits near Kerman (Bardsir area) have been studied.

This study presents the integrated (calcareous nannofossils)

biostratigraphy of the Bardsir section in the Kerman basin,

Central Iran. In most parts of Central Iran, the Upper

Cretaceous sequence is complete and continuous and is divided

into two groups: Cenomanian–Touronian flysch and

Campanian–Maastrichtian flysch. Flyschs composed of sets

of green marl sequences (Coniacian–Santonian) have been

separated to reduce the basin depth and refer to the relative

calm. Bardsir is located 57.6 km from Kerman (Central Iran).

The lithology of this area includes light green marl with layers

of calcareous siltstone, limestone, and flysch rocks. In this

study, 24 samples were taken and prepared with smear slide.

Most species were photographedwith a light microscope. As a

result of this study, 30 genera and 42 species of nannofossils

have been identified. A high-resolution calcareous nannofossil

biostratigraphic study has been carried out, allowing the

division of the studied section into eight biozones of Late

Santonian to Early Maastrichtian age (CC17–CC24).
کلیدواژه(گان): Calcareous nannoplankton-Kerman-Central Iran- Santonian-Maastrichtian
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