Sequence stratigraphy of the Early–Middle Devonian succession (Padeha Formation) in Tabas Block, East-Central Iran: Implication for mixed tidal flat deposits

Zand-Moghadam, Hamed; Moussavi‐Harami, Reza; Mahboubi, Asadollah

doi:10.1016/j.palwor.2013.06.002

Cited by 12 publications

(5 citation statements)

References 43 publications

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“…The Padeha Formation, dating to the Emsian–Eifelian boundary (approx. 393 Ma), belongs to the Central block of Iran and is a tidal flat deposit, likely showing a meso–macro-tidal regime [47,49]. The Rēzekne and Pärnu Formations, dating to the Late Emsian to Early Eifelian (approx.…”

Section: Methodsmentioning

confidence: 99%

“…Note that the South China region for our study includes Indochina, as there is evidence that the South China and Indochina blocks were linked due to the presence of similar fauna in the fossil record [32] (figure 1b,e). To test the robustness of our simulation outputs, we have identified three tidal proxies for each time slice which we will use for comparison [22,33,[34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49]. Details of the proxies are discussed in more detail in the Material and methods section and comparisons discussed in §3 (figure 1 and table 1).…”

Section: Introductionmentioning

confidence: 99%

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Tides: A key environmental driver of osteichthyan evolution and the fish-tetrapod transition?

2020

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Tides are a major component of the interaction between the marine and terrestrial environments, and thus play an important part in shaping the environmental context for the evolution of shallow marine and coastal organisms. Here, we use a dedicated tidal model and palaeogeographic reconstructions from the Late Silurian to early Late Devonian (420 Ma, 400 Ma and 380 Ma, Ma = millions of years ago) to explore the potential significance of tides for the evolution of osteichthyans (bony fish) and tetrapods (land vertebrates). The earliest members of the osteichthyan crown-group date to the Late Silurian, approximately 425 Ma, while the earliest evidence for tetrapods is provided by trackways from the Middle Devonian, dated to approximately 393 Ma, and the oldest tetrapod body fossils are Late Devonian, approximately 373 Ma. Large tidal ranges could have fostered both the evolution of air-breathing organs in osteichthyans to facilitate breathing in oxygen-depleted tidal pools, and the development of weight-bearing tetrapod limbs to aid navigation within the intertidal zones. We find that tidal ranges over 4 m were present around areas of evolutionary significance for the origin of osteichthyans and the fish-tetrapod transition, highlighting the possible importance of tidal dynamics as a driver for these evolutionary processes.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tides: A key environmental driver of osteichthyan evolution and the fish-tetrapod transition?

2020

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“…The studies dealing with the provenance of the Padeha Fm. in Alborz and Central Iran based on modal analysis and whole‐rock geochemistry confirmed felsic igneous source rocks mixed with recycled sediments derived from pre‐existing successions and a rifted continental margin tectonic provenance (Fardoust, Jafarzadeh, Zand‐Moghaddam, & Abedini Moghanaki, 2018; Hosseini et al, 2019; Hosseini‐Barzi & Saeedi, 2011; Poursoltani & Pe‐Piper, 2020; Zand‐Moghadam et al, 2013, 2014). A recent detrital zircon geochronological study of the Padeha Fm.…”

Section: Discussionmentioning

confidence: 97%

“…In the most parts of Iran, the Padeha Fm. consists of sandstone, locally conglomerate, mudstone, dolomite, and evaporites also occur (Aharipour et al, 2010; Zand‐Moghadam et al, 2013; Zand‐Moghadam, Moussavi‐Harami, & Mahboubi, 2014).…”

Section: Geological Settingmentioning

confidence: 99%

Tourmaline and rutile geochemistry in the Early–Middle Devonian sandstones of the Padeha Formation, Alborz Range, Northern Iran

et al. 2021

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The provenance of Devonian sandstones of the Padeha Formation (Fm.), Eastern Alborz in Iran, has been investigated by standard heavy‐mineral analysis and tourmaline and rutile geochemistry. Heavy‐mineral assemblage is dominated by the ultra‐stable tourmaline, zircon, and rutile, while unstable species are completely absent. The Padeha Fm. sandstones show a very high value of zircon‐tourmaline‐rutile index signalizing either strong weathering in source area(s) or their recycled origin in older Early Palaeozoic formations. Detrital tourmaline shows predominantly dravitic, lesser Mg‐foititic, and uvitic compositions and metasedimentary origin. Metapelitic source is also indicated by rutile geochemistry. Temperature estimates according to Zr‐in‐rutile thermometry show a wide range from 519 to 872°C and indicate the presence of low‐ to upper‐amphibolite and granulite facies metapelitic rocks. Based on chemical composition of detrital tourmaline and rutile, we inferred that the crystalline basement rocks of the Arabian–Nubian Shield were potential primary sources for the Padeha Fm. deposits. Shape of tourmaline and rutile as well as their microtexture surface features indicate long‐distance transport, storage, and recycled history.

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“…Mixed siliciclastic–carbonate tidal flats have been recognized in the rock record (Beukes, ; Button & Vos, ; Zand‐Moghadam et al ., , ). By contrast, they are poorly documented in modern environments.…”

Section: Comparison With Modern Analoguesmentioning

confidence: 99%

Sequence stratigraphic framework for mixed aeolian, peritidal and marine environments: Insights from the Pennsylvanian subtropical record of Western Pangaea

et al. 2016

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Due to difficulties in correlating aeolian deposits with coeval marine facies, sequence stratigraphic interpretations for arid coastal successions are debated and lack a unifying model. The Pennsylvanian record of northern Wyoming, USA, consisting of mixed siliciclastic–carbonate sequences deposited in arid, subtropical conditions, provides an ideal opportunity to study linkages between such environments. Detailed facies models and sequence stratigraphic frameworks were developed for the Ranchester Limestone Member (Amsden Formation) and Tensleep Formation by integrating data from 16 measured sections across the eastern side of the Bighorn Basin with new conodont biostratigraphic data. The basal Ranchester Limestone Member consists of dolomite interbedded with thin shale layers, interpreted to represent alternating deposition in shallow marine (fossiliferous dolomite) and supratidal (cherty dolomite) settings, interspersed with periods of exposure (pedogenically modified dolomites and shales). The upper Ranchester Limestone Member consists of purple shales, siltstones, dolomicrites and bimodally cross‐bedded sandstones in the northern part of the basin, interpreted as deposits of mixed siliciclastic–carbonate tidal flats. The Tensleep Formation is characterized by thick (3 to 15 m) aeolian sandstones interbedded with peritidal heteroliths and marine dolomites, indicating cycles of erg accumulation, preservation and flooding. Marine carbonates are unconformably overlain by peritidal deposits and/or aeolian sandstones interpreted as lowstand systems tract deposits. Marine transgression was often accompanied by the generation of sharp supersurfaces. Lags and peritidal heteroliths were deposited during early stages of transgression. Late transgressive systems tract fossiliferous carbonates overlie supersurfaces. Highstand systems tract deposits are lacking, either due to non‐deposition or post‐depositional erosion. The magnitude of inferred relative sea‐level fluctuations (>19 m), estimated by comparison with analogous modern settings, is similar to estimates from coeval palaeotropical records. This study demonstrates that sequence stratigraphic terminology can be extended to coastal ergs interacting with marine environments, and offers insights into the dynamics of subtropical environments.

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Sequence stratigraphy of the Early–Middle Devonian succession (Padeha Formation) in Tabas Block, East-Central Iran: Implication for mixed tidal flat deposits

Cited by 12 publications

References 43 publications

Tides: A key environmental driver of osteichthyan evolution and the fish-tetrapod transition?

Tides: A key environmental driver of osteichthyan evolution and the fish-tetrapod transition?

Tourmaline and rutile geochemistry in the Early–Middle Devonian sandstones of the Padeha Formation, Alborz Range, Northern Iran

Sequence stratigraphic framework for mixed aeolian, peritidal and marine environments: Insights from the Pennsylvanian subtropical record of Western Pangaea

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