Facies stacking and extinctions across the Triassic–Jurassic boundary in a peritidal succession from western Sicily

Todaro, Simona; Stefano, Pietro Di; Zarcone, Giuseppe; Randazzo, Vincenzo

doi:10.1007/s10347-017-0500-5

Cited by 19 publications

(23 citation statements)

References 69 publications

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“…Sparagio section consists of approximately 800 m of Upper Triassic-Lower Jurassic limestones, the lowermost part of which is hidden along the slope by a thick detrital cover that prevented its study. For this reason, only the upper 430 m were studied in detail to analyse the sedimentology and biostratigraphy across the TJB (Todaro et al, 2017). Petrographic characterization differentiated 14 facies types.…”

Section: Sedimentological and Stratigraphical Characteristicsmentioning

confidence: 99%

“…The TJB biotic crisis has been fully described from Tethyan deepwater successions (e.g., Hesselbo et al, 2002;Ciarapica, 2007;Pálfy and Zajzon, 2012;Hillebrandt et al, 2013). Concerning the shallowwater settings, several sections across the TJB were studied (McRoberts et al, 1997;Romano et al, 2008;Tunaboylu et al, 2014;Todaro et al, 2017), however in some cases they suffered lithological and/or facies variations (Southern Alps, Galli et al, 2005) or were affected by discontinuities (i.e., the reef margins in Sicily, Zarcone and Di Stefano, 2010).…”

Section: Introductionmentioning

confidence: 99%

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The end-Triassic mass extinction: A new correlation between extinction events and δ13C fluctuations from a Triassic-Jurassic peritidal succession in western Sicily

Todaro

Rigo

Randazzo

et al. 2018

Sedimentary Geology

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Section: Sedimentological and Stratigraphical Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The end-Triassic mass extinction: A new correlation between extinction events and δ13C fluctuations from a Triassic-Jurassic peritidal succession in western Sicily

Todaro

Rigo

Randazzo

et al. 2018

Sedimentary Geology

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“…1). These derive from both Tethyan and Panthalassan locations; the first two sections archive well-preserved, shallow-water, peritidal, micritic, and shelly limestones and shell materials (17,18); and the last section consists of open-shelf, organic-rich, and bivalve-rich marly limestone (6,19). The sections span the Norian to lower Hettangian and record the major losses of the ETME (6,(17)(18)(19).…”

Section: Introductionmentioning

confidence: 99%

“…These derive from both Tethyan and Panthalassan locations; the first two sections archive well-preserved, shallow-water, peritidal, micritic, and shelly limestones and shell materials (17,18); and the last section consists of open-shelf, organic-rich, and bivalve-rich marly limestone (6,19). The sections span the Norian to lower Hettangian and record the major losses of the ETME (6,(17)(18)(19). Therefore, they provide a window into the possible links between the ecosystem response and marine redox variations in Late Triassic oceans over a broad area (see Materials and Methods and the Supplementary Materials for analytical procedures, stratigraphic correlations, and sample descriptions).…”

Section: Introductionmentioning

confidence: 99%

An enormous sulfur isotope excursion indicates marine anoxia during the end-Triassic mass extinction

Corso

Newton

et al. 2020

Sci. Adv.

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The role of ocean anoxia as a cause of the end-Triassic marine mass extinction is widely debated. Here, we present carbonate-associated sulfate δ34S data from sections spanning the Late Triassic–Early Jurassic transition, which document synchronous large positive excursions on a global scale occurring in ~50 thousand years. Biogeochemical modeling demonstrates that this S isotope perturbation is best explained by a fivefold increase in global pyrite burial, consistent with large-scale development of marine anoxia on the Panthalassa margin and northwest European shelf. This pyrite burial event coincides with the loss of Triassic taxa seen in the studied sections. Modeling results also indicate that the pre-event ocean sulfate concentration was low (<1 millimolar), a common feature of many Phanerozoic deoxygenation events. We propose that sulfate scarcity preconditions oceans for the development of anoxia during rapid warming events by increasing the benthic methane flux and the resulting bottom-water oxygen demand.

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“…The lithostratigraphic setting of the peninsula has been the subject of several studies (Giunta & Liguori, , ; Abate et al ., ; Catalano et al ., , among others). However, only the facies stacking of the Upper Triassic–Lower Jurassic peritidal limestones has been analyzed in detail so far (Todaro et al ., , ). Other studies concentrated on the Cretaceous magmatic intrusions exposed in the south‐western sector of the peninsula (western part of the Mt Sparagio ridge; see Fig.…”

Section: Geological and Stratigraphic Settingmentioning

confidence: 99%

Carbonate slope re‐sedimentation in a tectonically‐active setting (Western Sicily Cretaceous Escarpment, Italy)

et al. 2020

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Tectonic processes are widely considered as a mechanism causing carbonate platform margin instabilities leading to the emplacement of mass transport deposits and calciturbidites. However, only few examples establishing a clear link between tectonics and re‐sedimentation processes are known from the literature. The two‐dimensional and three‐dimensional wire‐cut walls of hundreds of quarries extracting ornamental limestones (for example, Perlato di Sicilia) from the Western Sicily Cretaceous Escarpment in Italy expose a series of mass transport deposits. The depositional architecture, spatial facies distribution and sedimentary features of these deposits were studied in detail. Thin section analysis was used to define the microfacies characteristics and to determine the age of the re‐sedimented limestones. Eleven facies types grouped into four facies associations were recognized that defined specific depositional processes and environments. The stratigraphic architecture of the slope was reconstructed using four composite facies successions based on the detailed analysis and correlation of the field sections. The palaeoslope orientation was reconstructed based on the analysis of synsedimentary faults, slump scars and pinch‐out geometries. The Western Sicily Cretaceous Escarpment was strongly influenced by synsedimentary transtensional tectonics in combination with magmatic processes, as suggested by the presence of tuffites and pillow lava intercalations within the re‐sedimented carbonate series. These volcanics point to a major role of crustal shear as a trigger for mass transport deposit emplacement. The facies distribution along the Western Sicily Cretaceous Escarpment delivers new insights into the deformation processes accompanying the crustal extension of the Cretaceous western Tethys realm.

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Facies stacking and extinctions across the Triassic–Jurassic boundary in a peritidal succession from western Sicily

Cited by 19 publications

References 69 publications

The end-Triassic mass extinction: A new correlation between extinction events and δ13C fluctuations from a Triassic-Jurassic peritidal succession in western Sicily

The end-Triassic mass extinction: A new correlation between extinction events and δ13C fluctuations from a Triassic-Jurassic peritidal succession in western Sicily

An enormous sulfur isotope excursion indicates marine anoxia during the end-Triassic mass extinction

Carbonate slope re‐sedimentation in a tectonically‐active setting (Western Sicily Cretaceous Escarpment, Italy)

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