:: Volume 11, Issue 43 (2020) ::
2020, 11(43): 1-8 Back to browse issues page
Paleoecology of Neotethys Ocean Calcareous Nannofossils in Baghamshah Formation (Rizu Section)
Azadeh Borbar , Fatemeh Hadavi , Marziyeh Notghi-moghadam , Abbas Ghadri
, Ferdowsi University of Mashhad, , azadeh.bordbar1277@gmail.com
Abstract:   (3769 Views)

In this research, paleoecology of Baghmashah Formation in Rizu section based on calcareous nannoplanktons has been investigated. Baghmashah Formation is part of the Mago sedimentary mega sequence in the Tabas block that was located in the northern margin of the Neotethys Ocean in Jurassic-Cretaceous. The Baghmshah Formation in this section with 270m thickness mainly includes the alternation of green marl- shale with thin interlayers of calcareous sandstone. The study of calcareous nannofossils and index species of nannofossil indicates Berriasian- early Huterivian age for the Baghmashah Formation in this section. Investigation of the abundance of calcareous nannofossils in the studied section shows that the sedimentary basin of Baghmashah Formation in Rizu section located in low latitude with warm surface waters, and formation deposited in oligotrophic conditions with shallow environment

 

Keywords: Paleoecology, Baghamshah, Rizu, Calcareous nannofossils, Neotethys Ocean
Full-Text [PDF 429 kb]   (1094 Downloads)    
Type of Study: Applied Article | Subject: Marine Geology
Received: 2020/05/17 | Revised: 2021/05/12 | Accepted: 2021/04/30 | ePublished: 2020/10/1



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Volume 11, Issue 43 (2020) Back to browse issues page