Document Type : Original Research Paper

Authors

1 Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

2 Research Institute for Earth Sciences, Geological Survey of Iran, Tehran, Iran

Abstract

A thick succession of Middle – Late Jurassic rocks in the western part of BinaludRange has been studied. This succession consists mainly of limestone, marly limestone and marl. The thickness of the succession in the study section (Baghi, north of Neyshabour) is 709 meters and is subdivided into 4 members. The lower boundary with the underlying dark shale and upper boundary with the overlying buff limestone are inconspicuous and transitional. Ammonites are the most important and abundant macrofossils in this section. 43 genera and 76 species have been identified among them 8 species are reported for the first time from Iran. Based on the ammonite fauna, Early Bathonian to Kimmeridjian ages are purposed for these rocks. The fauna show close relationship to Sub- Mediterranean province and there is a great similarity between ammonite fauna of the investigated area with Kope – Dagh and AlborzRange.

Keywords

References
Cariou, E. and Hantzpergue, P., 1997- Groupe Français d’Études du Jurassique, biostratigraphie du Jurassique ouest-européen et méditerranéen. Zonations parallèles et distribution des invertébrés et microfossiles. Bulletin des Centres de Recherches-Exploration Production d’Elf-Aquitaine 17,1–400.
Majidifard, M. R., 2003- Biostratigraphy, lithostratigraphy, ammonite taxonomy and microfacies analysis of the Middle and Upper Jurassic of norteastern Iran.- Unpublished Ph. D. Thesis, University of Wuerzburg: 1-201, Wuerzburg.
Schairer, G., Seyed-Emami, K., Majidifard, M. R. and Monfared, M., 1999- Erster Nachweis von Untertithon in  der Chaman Bid-Formation an der Typuslokalität bei Bash Kalateh (Zentral-Koppeh Dagh, NE Iran).Mitteilungen der Bayerischen Staatssammlung für Paläontologie und historische Geologie 39: 21-32, 2 pls.:München.
Schairer, G., Seyed-Emami, K., Fuersich, F. T., Senowbari-Daryan, B., Aghanabati, S. A. and Majidifard, M. R., 2000- Stratigraphy, facies analysis and ammonite fauna of the Qal’eh Dokhtar Formation (Middle–Upper Jurassic) at the type locality west of Boshrouyeh (east–central Iran). N. Jb. Geol. Palaont. Abh., 216 (1), 35–66, Stuttgart.
Schairer, G., Fuersich, F. T., Wilmsen, M., Seyed-Emami, K. and Majidifard, M. R., 2003- Stratigraphy and ammonite fauna of Upper Jurassic basinal sediments at the eastern margin of the Tabas Block (east – central Iran), Geobios 36, 195–222.
Seyed - Emami, K., 1988- Jurassic and Cretaceous Ammonite fauna of Iran and their paleobiogeographic significance. ( Die Jura- und Kriede- Ammoniten des Iran und iher palaobiogeographische Bedutung) In: Wiedmann, J& Kullman, J. (Eds.), Cephalopodes- present and past , pp. 599 – 606. Schweizerbartsche Verlagsbuchhandlung, Stuttgart.
Seyed - Emami, K., Schairer, G. and Zeiss, A., 1995- Ammoniten aus der Dalichai–Formation (Mittlerer bis Oberer Jura) und der Lar–Formation (Oberer Jura) N Emamzadeh-Hashem (Zentralalborz, Nordiran), Mitt. Bayer. Staatsslg. Palaont. hist. Geol., 35, 39–52, Munchen.
Seyed-Emami, K., Schairer, G., Fursich, F. T., Wilmsen, M. and Majidifard, M. R., 2002- Reineckeiidae (Ammonoidea) from the Callovian (Middle Jurassic) of the Shotori Rang (East Central Iran). N. Jb. Geol. Palaont. Mh, (3), pp. 184-192.
Wilmsen, M., Fuersich, F. T. and Seyed-Emami, K., 2003- revised lithostratigraphy of the Middle and Upper Jurassic Magu Group of the northern Tabas Block, east-central Iran, Newsl. Stratigr., 39 (2/3), 143–156, 4 Fig.