Lower Tithonian ammonites from the Chaman Bid Formation in northeastern Iran, Koppeh-Dagh Basin

Authors

  • Franz Fuersich GeoZentrum Nordbayern, Friedrich-August Universität Erlangen-Nürnberg
  • Helmut Keupp Freie Universität Berlin, Institut für Geologische Wissenschaften
  • Kazem Seyed Emami School of Mining Engineering, University College of Engineering, University of Tehran
Abstract:

The type section of the Middle and Upper Jurassic Chaman Bid Formation is in the western Koppeh Dagh Basin (Northeast Iran). It is unusually thick and contains a rather rich ammonite fauna, ranging from Bathonian to Tithonian. The ammonites described here come from a 134-m-thick interval in the upper part of member (D) in the middle part of the formation, consisting of an alternation of grey limestone and marly limestone. The following ammonite families are present: Haploceratidae, Oppeliidae, Perisphinctidae, and Ataxioceratidae, among them the following taxa have being recorded for the first time from Iran: Phanerostephanus subsenex, Phanerostephanus aff. intermedius, Nothostephanus aff. kurdistanensis, Nannostephanus cf. subcomutus and Oxylenticeras cf. lepidum. This assemblage is belonging to the Lower Tithonian Semiforme Zone or even older zones. The Fallauxi Zone is represented by Richteria richteri.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Late Barremian-Early Aptian Ammonites from the Tirgan Formation, Kopet-Dagh Sedimentary Basin, NE Iran

During the recent field research on the Tirgan Formation in the west of Kopet-Dagh sedimentary basin, ammonite assemblages were obtained from the carbonate strata of this formation. This new finding is important for stratigraphical purpose. In this research, 3 genera belong to Heteroceras, Deshayesites and Cheloniceras? as well as one uncertain genus belongs to Turkmeniceras are determined. The...

full text

Late Barremian Heteroceratidae Hyatt 1900 (ammonoidea), from the Sarcheshmeh Formation (Koppeh-Dagh Basin, Northeast Iran): biostrartigraphy and paleobiogeoraphy

Representative ammonites of the Family Heteroceratidae have been studied in this paper. The following forms are recorded from the Koppeh-Dagh Basin: Heteroceras cf. colchicus Djanelidze, Heteroceras spp., Martelites cf. tenuicostatus (Kakabadze), Martelites securiformis (Simonovich, Bastevich and Sorokin), Martelites cf. tinae (Eristavi), Martelites sp.1, Martelites sp. 2, Argvethites sp., Imer...

full text

Foraminiferal biozonation and morphogroups from shale memberof the Aitamir Formation in Maraveh Tappeh section, northwest Koppeh-Dagh Basin

AbstractThe Aitamir Formation is divided into two members the lower sandstone and the upper shale. 32 genera and 57 species of foraminifera have been recognized. According to identified foraminifera Rotalipora appenninica Interval Zone, Rotalipora globotruncanoides (Rotalipora brotzeni) interval zone and Whiteinella aumalensis-Dicarinella canaliculata assemblage zone are proposed and a l Albian...

full text

Palynofacies-based sequence stratigraphy of the Upper Cretaceous strata (Abderaz Formation) in east of Koppeh-Dagh Basin, Northeast of Iran

The Upper Cretaceous strata were studied in a composite stratigraphic section named here Padeha-Baghak section in east of Koppeh-Dagh basin, north east of Iran. In this study, palynostratigraphy, palynofacies and depositional environment history of Abderaz Formation were integrated with sequence stratigraphy. Determination of sea level history and sequence units of the Abderaz Formation using s...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 7  issue 1

pages  11- 26

publication date 2017-01-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023