New data on the Late Viséan–Late Serpukhovian foraminifers of northern Alborz, Iran (biostratigraphic implications)

Zandkarimi, Keyvan; Vachard, Daniel; Cózar, Pedro; Najafian, Bahram; Hamdi, B.; Mosaddegh, Hossein

doi:10.1016/j.revmic.2016.11.003

Cited by 15 publications

(29 citation statements)

References 51 publications

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“…The Mobarak Formation of the north‐central Alborz has a relatively different lithology compared with that of type area, in south‐central Alborz. Consequently, it starts with thick‐ to very thick‐bedded limestone, followed by thin‐ to medium‐bedded occasionally sandy limestone and upper thick‐bedded fetid ooidal limestone alternating with the blackish shale (Figures and ; Mosaddegh, ; Zandkarimi et al, ; Zandkarimi, Vachard, Cózar, et al, ; Zandkarimi, Vachard, Najafian, et al, ).…”

Section: Lithostratigraphymentioning

confidence: 99%

“…Main lithology and formations of the Mississippian rocks and their underlying and overlying beds in the Alborz subzones, their relative names, and ages (compiled from Assereto, ; Bozorgnia, ; Brenckle et al, ; Falahatgar & Mosaddegh, ; Falahatgar et al, ; Jenny et al, ; Lys et al, ; Mosaddegh, ; Saeidi et al, ; Vachard, ; Zandkarimi, ; Zandkarimi et al, ; Zandkarimi, Vachard, Cózar, et al, ; Zandkarimi, Vachard, Najafian, et al, )…”

Section: Lithostratigraphymentioning

confidence: 99%

“…Correlation chart of the “Dozdehban” Formation in the Dozdehban and Naserabad sections associated with more stratigraphically important foraminifers and established foraminiferal zonation (modified after Zandkarimi, Vachard, Cózar, et al, and Zandkarimi, Vachard, Najafian, et al, ) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Lithostratigraphymentioning

confidence: 99%

“…The Mobarak Formation was introduced by Assereto () in the Mobarakabad area, central Alborz, and comprises black fossiliferous limestone with subordinate black marl in the lower part. It has been widely studied and dated in central Alborz using brachiopods (Bahrammanesh, Angiolini, Antonelli, Aghababalou, & Gaetani, ; Gaetani, , , ; Qiao, Falahatgar, & Shen, ), conodonts (Ahmadzadeh Heravi, ; Habibi et al, ), and foraminifers (Bozorgnia, ; Devuyst & Kalvoda, ; Falahatgar, Vachard, & Sakha, ; Vachard, ; Zandkarimi, ; Zandkarimi, Najafian, Vachard, Bahrammanesh, & Vaziri, ; Zandkarimi, Vachard, Cózar, et al, ; Zandkarimi, Vachard, Najafian, Hamdi, & Mosaddegh, ). The Mississippian of the north‐eastern Alborz in addition to the Mobarak Formation contains relatively similar strata to the Dozdehban Formation, which was referred to as the “Bagherabad Formation” (Leven & Gorgij, ; Lys, Stampfli, & Jenny, ).…”

Section: Introductionmentioning

confidence: 99%

“…For a synthesis of the Mississippian foraminiferal zonation and Late Palaeozoic stratigraphy of Alborz, we have followed the works of Assereto (), Bozorgnia (), Stöcklin and Setudehnia (), Vachard (), Brenckle, Gaetani, Angiolini, and Bahrammanesh (), Falahatgar et al (), Zandkarimi et al (), Zandkarimi et al (), Zandkarimi, Vachard, Cózar, et al () and Zandkarimi, Vachard, Najafian, et al (), and several unpublished MSc and PhD theses (Bastami, ; Mosaddegh, ; Najafi, ; Payami‐e Rad, ; Zandkarimi, ) carried out on the Late Palaeozoic of Alborz, and for foraminiferal classification and correlation of zonation with well‐known Mississippian references, we have followed the works of Pirlet and Conil (), Vachard and Tahiri (), Vachard and Berkhli (), Hance, Hou, and Vachard (), Gibshman (, ), Gibshman, Kabanov, Alekseev, Goreva, and Moshkina (), Nikolaeva, Kulagina, Pazukhin, Kochetova, and Konvalova (2009), Kabanov, Alekseev, Gibshman, Gabdullin, and Bershov (), Vachard (), and various papers of Cózar and Somerville (, , , , ), Somerville (), Cózar, Somerville, and Burgess (, ), Cózar, Somerville, Aretz, and Herbig (); Cózar et al (), Cózar et al (), Cózar, Sanz‐López, and Blanco‐Ferrera (), and Cózar et al (). The microfacies and depositional interpretation follow the works of Dunham (), Read (), Burchette and Wright (), Mosaddegh (), and Flügel ().…”

Section: Introductionmentioning

confidence: 99%

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Mississippian lithofacies and foraminiferal biozonation of the Alborz Mountains, Iran: Implications for regional geology

Zandkarimi

Vachard²,

Najafian

et al. 2018

Geological Journal

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The Mississippian rocks at 5 sections, Kalariz, Peyghambaran, Jaban, Naserabad, and Dozdehban, have been measured and sampled in a SE–NW direction across the Alborz Mountains. Foraminiferal zones recognized in those sections, as well as a revision of other foraminiferal assemblage previously published from the Alborz Mountains, allow to recognize 12 biozones: 5 in the Tournaisian: Unilocular (MFZ1–MFZ2? interval), Septabrunsiina krainica (MFZ3–MFZ5 interval), Eotextularia diversa (MFZ6), Darjella monilis (MFZ7), and primitive Eoparastaffella (MFZ8); 5 Viséan biozones: Eoparastaffella simplex (MFZ9), primitive archaediscids (MFZ10), Uralodiscus rotundus (MFZ11), Pojarkovella–Koskinotextularia (MFZ12), Neoarchaediscus (Upper Mikhailovian), Howchinia gibba–Archaediscus/Paraarchaediscus at angulatus‐tenuis stage–Neoarchaediscus akchimensis (Venevian substage); and 2 Serpukhovian biozones: Biseriella parva–Climacammina (Tarusian–Steshevian substages) and Turrispiroides multivolutus–Brenckleina–Eostaffellina protvae (Protvian substage) for the Mississippian rocks of Alborz. Analysis of foraminiferal assemblages indicates a noticeable age difference of the Mississippian rocks between the northern and southern flanks of Alborz. Accordingly, south‐eastern and east‐central Alborz (Kalariz, Peyghambaran, and Jaban sections) display complete Tournaisian deposits (MFZ1–MFZ8), whereas northern Alborz contains the strata dated from Late Tournaisian to Late Serpukhovian (MFZ8–MFZ16). The sedimentological studies also reveal sharp facies variations following the mentioned age variation. Previously, the age variations of these rocks were attributed to various events, such as the Mississippian glaciation phases. However, the age, facies, and thickness variations of lithostratigraphic units in the Alborz are not specific to the Mississippian and are reported during the entire Palaeozoic and even Mesozoic and Cenozoic. They can rather be attributed to the inherited basement and syn‐sedimentary E–W‐trending faults.

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Section: Lithostratigraphymentioning

confidence: 99%

Section: Lithostratigraphymentioning

confidence: 99%

Section: Lithostratigraphymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mississippian lithofacies and foraminiferal biozonation of the Alborz Mountains, Iran: Implications for regional geology

Zandkarimi

Vachard²,

Najafian

et al. 2018

Geological Journal

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Palaeoenvironment, palaeogeography, and palaeoclimatology of the Mississippian carbonate ramp in the Alborz tectonostratigraphic zone: Implications for deciphering the controlling factors on ramp evolution

Zandkarimi¹,

Bayet‐Goll

Falahatgar³

et al. 2022

Geological Journal

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The Mississippian successions of the Alborz tectonostratigraphic zone have been studied in several sections (Dozdehban, Naserabad, Shahmirzad, and Mighan) extending from north to southeast. The sedimentological data indicate three main facies associations (FA): (FA1) a basin to distal outer ramp of low‐energy, low‐oxygen environment with low bioturbation and less developed in situ fossils; (FA2) a middle ramp facies accompanied by storm‐induced sediments (tempestites), echinoderm‐dominated mud mounds, and high fragmentation of skeletal components; and (FA3) an inner ramp facies, represented by sand shoal, and lagoonal/back‐barrier, mainly characterized by the dominance of oolitic, bioclast, and intraclast grainstones. The sedimentary features imply the formation of the succession on a broad flat‐topped, high‐to‐moderate‐energy shelfal carbonate ramp which had been open to the N/NE, the downslope direction, as revealed by local palaeoenvironmental reconstructions. Analysis of several proxies indicates a subtropical palaeoclimate evidenced by (a) widespread tempestite facies and occurrence of storm‐depositional processes, (b) diverse and abundant pellet‐forming thalassinoideans and burrowing echinoids trace fossil assemblages, (c) geochemical proxy indicating a palaeotemperature of 23°–25°, and (d) a rich subtropical heterozoan fossil association. The data provided here imply the palaeolatitudinal position of the Alborz Mississippian ramp is 30–40°S along the southern margin of the Palaeotethys.

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Paleozoic

Ghorbani

2019

Springer Geology

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New data on the Late Viséan–Late Serpukhovian foraminifers of northern Alborz, Iran (biostratigraphic implications)

Cited by 15 publications

References 51 publications

Mississippian lithofacies and foraminiferal biozonation of the Alborz Mountains, Iran: Implications for regional geology

Mississippian lithofacies and foraminiferal biozonation of the Alborz Mountains, Iran: Implications for regional geology

Palaeoenvironment, palaeogeography, and palaeoclimatology of the Mississippian carbonate ramp in the Alborz tectonostratigraphic zone: Implications for deciphering the controlling factors on ramp evolution

Paleozoic

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