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Provenance of the Walash-Naopurdan back-arc-arc clastic sequences in the Iraqi Zagros Suture Zone

Journal Article


Abstract


  • Marine clastic rocks occurring in the Walash and Naopurdan Groups in the Hasanbag and Qalander areas, Kurdistan region, Iraqi Zagros Suture Zone, are lithic arenites with high proportions of volcanic rock fragments. Geochemical classification of the Eocene Walash and Oligocene Naopurdan clastic rocks indicates that they were mainly derived from associated sub-alkaline basalt and andesitic basalt in back-arc and island arc tectonic settings. Major and trace element geochemical data reveal that the Naopurdan samples are chemically less mature than the Walash samples and both were subjected to moderate weathering. The seaway in the southern Neotethys Ocean was shallow during both Eocene and Oligocene permitting mixing of sediment from the volcanic arcs with sediment derived from the Arabian continental margin. The Walash and Naopurdan clastic rocks enhance an earlier tectonic model of the Zagros Suture Zone with their deposition occurring during the Eocene Walash calc-alkaline back-arc magmatism and Early Oligocene Naopurdan island arc magmatism in the final stages of intra-oceanic subduction before the Miocene closure and obduction of the Neotethys basin.

Authors


  •   Ali, Sarmad A. (external author)
  •   Sleabi, Rajaa (external author)
  •   Talabani, Mohammad (external author)
  •   Jones, Brian G.

Publication Date


  • 2017

Citation


  • Ali, S. A., Sleabi, R. S., Talabani, M. J. A. & Jones, B. G. (2017). Provenance of the Walash-Naopurdan back-arc-arc clastic sequences in the Iraqi Zagros Suture Zone. Journal of African Earth Sciences, 125 73-87.

Scopus Eid


  • 2-s2.0-84994257626

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/4260

Has Global Citation Frequency


Number Of Pages


  • 14

Start Page


  • 73

End Page


  • 87

Volume


  • 125

Place Of Publication


  • United Kingdom

Abstract


  • Marine clastic rocks occurring in the Walash and Naopurdan Groups in the Hasanbag and Qalander areas, Kurdistan region, Iraqi Zagros Suture Zone, are lithic arenites with high proportions of volcanic rock fragments. Geochemical classification of the Eocene Walash and Oligocene Naopurdan clastic rocks indicates that they were mainly derived from associated sub-alkaline basalt and andesitic basalt in back-arc and island arc tectonic settings. Major and trace element geochemical data reveal that the Naopurdan samples are chemically less mature than the Walash samples and both were subjected to moderate weathering. The seaway in the southern Neotethys Ocean was shallow during both Eocene and Oligocene permitting mixing of sediment from the volcanic arcs with sediment derived from the Arabian continental margin. The Walash and Naopurdan clastic rocks enhance an earlier tectonic model of the Zagros Suture Zone with their deposition occurring during the Eocene Walash calc-alkaline back-arc magmatism and Early Oligocene Naopurdan island arc magmatism in the final stages of intra-oceanic subduction before the Miocene closure and obduction of the Neotethys basin.

Authors


  •   Ali, Sarmad A. (external author)
  •   Sleabi, Rajaa (external author)
  •   Talabani, Mohammad (external author)
  •   Jones, Brian G.

Publication Date


  • 2017

Citation


  • Ali, S. A., Sleabi, R. S., Talabani, M. J. A. & Jones, B. G. (2017). Provenance of the Walash-Naopurdan back-arc-arc clastic sequences in the Iraqi Zagros Suture Zone. Journal of African Earth Sciences, 125 73-87.

Scopus Eid


  • 2-s2.0-84994257626

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/4260

Has Global Citation Frequency


Number Of Pages


  • 14

Start Page


  • 73

End Page


  • 87

Volume


  • 125

Place Of Publication


  • United Kingdom