Advertisement

STRATI 2013 pp 463-468 | Cite as

Lithostratigraphy and Lithofacies of the Siliciclastic Bāqoroq Formation (Middle Triassic), Nakhlak Area, Central Iran

  • S. Halimeh Hashemi AziziEmail author
  • Payman Rezaee
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)

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.

Keywords

Bāqoroq Formation Central Iran Siliciclastic rock Triassic 

References

  1. 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.CrossRefGoogle Scholar
  2. 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.CrossRefGoogle Scholar
  3. 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.CrossRefGoogle Scholar
  4. 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.CrossRefGoogle Scholar
  5. 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.Google Scholar
  6. 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.Google Scholar
  7. 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.Google Scholar
  8. Folk, R. L. (1974). Petrology of sedimentary rocks. Austin, Texas: Hemphill. 159 p.Google Scholar
  9. Ruttner, A. W. (1984). The pre-Liassic basement of the eastern Kopet Dagh range. Neues Jahrbuch fur geologie und Palaontologie, Abhandlungen,168, 256–268.CrossRefGoogle Scholar
  10. 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.CrossRefGoogle Scholar
  11. Seyed-Emami, K. (2003). Triassic in Iran. Facies,48, 91–106.CrossRefGoogle Scholar
  12. Soffel, H., Forster, H., & Becker, H. (1975). Preliminary polar wander path of central Iran. Journal of Geophysics,41, 541–543.Google Scholar
  13. Soffel, H., & Forster, H. (1980). Apparent polar wander path of Central Iran and its geotectonic interpretation. Journal of Geomagnetism, supplement III 117–135.Google Scholar
  14. 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.CrossRefGoogle Scholar
  15. Tozer, E.-T. (1972). Triassic ammonoids and Daonella from the Nakhlak group, Anarak region, central Iran. Geological Survey of Iran, Report,28, 29–69.Google Scholar
  16. Wensink, H. (1982). Tectonic inferences of Palaeomagnetic data from some Mesozoic formations in central Iran. Journal of Geophysics,51, 12–23.Google Scholar
  17. Wensink, H. (1983). Palaeomagnetism of red beds of early Devonian age from central Iran. Earth and Planetary Science Letters,63, 325–334.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Department of GeologyUniversity of HormozganBandar AbbasIran

Personalised recommendations