Calcareous algae of the Shah Kuh Formation (Early Cretaceous) in southwest of Khur (Central Iran)
Subject Areas :
hamid
mirmohammadsadeghi
1
Adabi
2
3
Keywords: Calcareous algae Early Cretaceous Shah Kuh Formation Khur Central Iran.,
Abstract :
A complete succession of the Shah Kuh Formation with the age of Early Cretaceous is exposed in southwest of Khur, in Central Iran. In order to study and describe calcareous algae the Shah Kuh Formation a stratigraphic section was selected, sampled and studied in Kuh- e Tangal- e Bala, 80 Km southwest of Khur city. Association of calcareous algae consist of Delloffrella quercifoliipora belongs to Triploporellaceae, Montiella elitzae, Neomeris cretacea, Salpingoporella sp. and Terquemella sp. related to Dasycladacea and Permocalculus cf. minutus belongs to Gymnocodiacea. Also 2 genera of Udoteaceae (Arabicodium and Boueina) and 1 species of Solenoporaceae (Marinella Lugeoni) were identified. A species of algae ascribed to uncertain affinities (Lithocodium aggregatum) accompanied by skeletal fragments of colonial octocorals were identified in this research. In studied microfacies, calcareous algae were observed in sediments of lagoon and bar environments. Based on calcareous algae and benthic foraminifera association, the age of Late Barremian- Early Aptian was assigned for the succession of the Shah Kuh Formation in studied section.