Annales de Paleontologie, Year (2020-4)

Title : ( Stratigraphic distribution of shallow-water benthic foraminifera from the Lower Cretaceous Taft formation, Central Iran (Yazd Block), with evidence for the importance of hiatuses )

Authors: masoumeh gheiasvand , Ali reza Ashouri , Seyed Ali Aghanabati , Morteza Taherpour Khalil-Abad , Abbas Ghaderi ,

Citation: BibTeX | EndNote

Abstract

In this contribution, two stratigraphic sections are described through the Lower Cretaceous shallow-water platform sediments (Taft formation) from the northern Tethys, which are located in the Yazd Block, Central Iran. Benthic foraminifera are used to propose a biostratigraphy for these successions. They are grouped around several assemblage zones, and several genera and species are reported from the Yazd Block basin for the first time (e.g., Arenobulimina cochleata, A. meltae, Belorusiella sp., Bolivinopsis cf. labeosa, Decussoloculina barbui, Martinotiella jucunda, Myncina bulgarica, Novalesia cornucopia, Sabaudia briacensis, Simplorbitolina manasi). Their presence can provide a better understanding for the paleogeographic reconstruction of the Tethyan seaways. Furthermore, they represent candidates as potential index fossils in the Lower Cretaceous stratigraphy of the Yazd Block. The new biostratigraphic data allow to date the Lower Cretaceous successions between the probable Valanginian and the late Aptian. Based on the absence of early Barremian indicators and also late Aptian markers, two hiatuses are recognized through the Taft formation. This formation also displays a diachrony in ages at its base and top, which suggests the effect of long-term subsidence in the Yazd Block during the Early Cretaceous, following the Cimmerian phase of orogeny.

Keywords

, Yazd Block, Lower Cretaceous, Taft formation, Benthic foraminifera, Hiatuses
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@article{paperid:1079421,
author = {Gheiasvand, Masoumeh and Ashouri, Ali Reza and سید علی آقانباتی and مرتضی طاهرپور خلیل‌آباد and Ghaderi, Abbas},
title = {Stratigraphic distribution of shallow-water benthic foraminifera from the Lower Cretaceous Taft formation, Central Iran (Yazd Block), with evidence for the importance of hiatuses},
journal = {Annales de Paleontologie},
year = {2020},
month = {April},
issn = {0753-3969},
keywords = {Yazd Block; Lower Cretaceous; Taft formation; Benthic foraminifera; Hiatuses},
}

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%0 Journal Article
%T Stratigraphic distribution of shallow-water benthic foraminifera from the Lower Cretaceous Taft formation, Central Iran (Yazd Block), with evidence for the importance of hiatuses
%A Gheiasvand, Masoumeh
%A Ashouri, Ali Reza
%A سید علی آقانباتی
%A مرتضی طاهرپور خلیل‌آباد
%A Ghaderi, Abbas
%J Annales de Paleontologie
%@ 0753-3969
%D 2020

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