Biostratigraphy of Late Devonian Conodonts in Gerik Section, Eastern Zarand (Kerman Province)

Gholamalian, H; Ghoreishi Maremy, S; Parvaneh Nezhad Shirazi, M

doi:10.22071/gsj.2014.43657

Biostratigraphy of Late Devonian Conodonts in Gerik Section, Eastern Zarand (Kerman Province)

Document Type : Original Research Paper

Authors

H Gholamalian ¹

S Ghoreishi Maremy ²

M Parvaneh Nezhad Shirazi ³

¹ Assistant Professor, Department of Geology, Faculty of Sciences, Hormozgan University, Bandar Abbas, Iran

² M.Sc. Students, Department of Geology, Payam Noor University, Shiraz Center, Shiraz, Iran

³ Assistant Professor, Department of Geology, Payam Noor University, Shiraz Center, Shiraz, Iran

10.22071/gsj.2014.43657

Abstract

The Bahram Formation equivalent sequence in the Gerik section (eastern Zarand) displays middle Frasnian to early Famennian age on the basis of conodont investigation. Twenty-eight species and subspecies were identified. Seven biozones were recognized on the basis of vertical distribution of these taxa along the stratigraphic column; older than Upper hassi Zone, Upper hassi – jamieae zones, ?Lower rhenana Zone, Upper rhenana – linguiformis zones, Lower triangularis, Middle triangularis - Lower crepida zones, Middle – Upper crepida zones. Index conodont species those are recovered from the biostrome horizon in the lower part of section proved the middle Frasnian age (Upper hassi – jamieae zones). From view of conodont fauna, lithostatigraphy and age; the Gerik section is comparable with other successions of the Bahram Formation in Kerman, Tabas and Esfahan areas and shows a shallow sedimentary environment.

Keywords

Late Devonian

Bahram Formation

Conodonts

Biostratigraphy