Abstract
The Triassic succession of the Nakhlak area in Central Iran consists of: (1) the Alam Formation, a sequence of shallowing- and coarsening-upward marine turbidites deposited on the forearc side of an accretionary prism; (2) the Bāqoroq Formation, a sequence of coarse- to fine-grained, polymictic, fluvial conglomerates; and (3) the Ashin Formation, which comprises alternating distal marine shales and sandstones that have turbiditic characteristics. We studied the petrography and stratigraphy of a 1500-m-thick section from the siliciclastic Bāqoroq Formation, located at lat 33°33′41″N, long 53°47′49″E. This formation is located between the Alam Formation (below) and the Ashin Formation (above). Forty samples were petrographically analysed, of which 11 were used for point-counting analysis. Point-counting results plotted on a Folk diagram show that litharenite and feldspathic litharenite are common.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
AlaviI, M., Vaziri, H., Seyed-Emami, K., & Lasemi, Y. (1977). The Triassic and associated rocks of the Nakhlak and Aghdarband areas in central and northeastern Iran as remnants of the southern Turanian active continental margin. Bulletin Geological Society of America,109(12), 1563–1575.
Angiolini, L., Gaetani, M., Muttoni, G., Stephenson, M., & Zanchi, A. (2007). Tethyan oceanic currents and climate gradients 300 m.y. ago. Geology,35, 1071–1074.
Balini, M., Nicora, A., Berra, F., Garzantini, E., Levera, M., Mattei, M., et al. (2009). The Triassic stratigraphic succession of Nakhlak (central Iran), a record from an active margin. Geological Society, London, Special Publication,312, 287–321.
Berra, F., Balini, M., Levera, M., Nicora, A., & Salamati, R. (2012). Anatomy of carbonate mounds from the Middle Anisian of Nakhlak (central Iran): architecture and age of a subtidal microbial–bioclastic carbonate factory. Facies,58, 685–705.
Davoudzadeh, M., & Seyed-Emami, K. (1969). Preliminary note on a newly discovered Triassic Section northeast of Anarak (central Iran), with some remarks on the age of the Metamorphism on the Anarak Region. Geological Survey of Iran, Note,5, 1–23.
Davoudzadeh, M., & Seyed-Emami, K. (1972). Stratigraphy and paleontology of the Triassic Nakhlak Group, Anarak region, central Iran. Geological Survey of Iran, Report,28, 5–28.
Davoudzadeh, M., Soffel, H., & Schmidt, K. (1981). On the rotation of the central-east Iran microplate. Neues Jahrbuch fur Geologie und Palaontologie, Abhandlungen, Monatshefte,3, 180–192.
Folk, R. L. (1974). Petrology of sedimentary rocks. Austin, Texas: Hemphill. 159 p.
Ruttner, A. W. (1984). The pre-Liassic basement of the eastern Kopet Dagh range. Neues Jahrbuch fur geologie und Palaontologie, Abhandlungen,168, 256–268.
Schmidt, K., & Soffel, H. (1984). Mesozoic-Cenozoic geological events in central east Iran and their relation to paleomagnetic results. Neues Jahrbuch fur Geologie und Palaontologie, Abhandlungen,168, 173–181.
Seyed-Emami, K. (2003). Triassic in Iran. Facies,48, 91–106.
Soffel, H., Forster, H., & Becker, H. (1975). Preliminary polar wander path of central Iran. Journal of Geophysics,41, 541–543.
Soffel, H., & Forster, H. (1980). Apparent polar wander path of Central Iran and its geotectonic interpretation. Journal of Geomagnetism, supplement III 117–135.
Soffel, H., & Forster, H. (1984). Polar wander path of the central east Iran microplate including new results. Neues Jahrbuch fur Geologie und Palaontologie, Abhandlungen,168, 165–172.
Tozer, E.-T. (1972). Triassic ammonoids and Daonella from the Nakhlak group, Anarak region, central Iran. Geological Survey of Iran, Report,28, 29–69.
Wensink, H. (1982). Tectonic inferences of Palaeomagnetic data from some Mesozoic formations in central Iran. Journal of Geophysics,51, 12–23.
Wensink, H. (1983). Palaeomagnetism of red beds of early Devonian age from central Iran. Earth and Planetary Science Letters,63, 325–334.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Halimeh Hashemi Azizi, S., Rezaee, P. (2014). Lithostratigraphy and Lithofacies of the Siliciclastic Bāqoroq Formation (Middle Triassic), Nakhlak Area, Central Iran. In: Rocha, R., Pais, J., Kullberg, J., Finney, S. (eds) STRATI 2013. Springer Geology. Springer, Cham. https://doi.org/10.1007/978-3-319-04364-7_89
Download citation
DOI: https://doi.org/10.1007/978-3-319-04364-7_89
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-04363-0
Online ISBN: 978-3-319-04364-7
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)