The Permian (Kungurian, Cisuralian) palaeoenvironment and palaeoclimate of the Tregiovo Basin, Italy: Palaeobotanical, palynological and geochemical investigations

Forte, Giuseppa; Kustatscher, Evelyn; Roghi, Guido; Preto, Nereo

doi:10.1016/j.palaeo.2018.01.012

Cited by 16 publications

(6 citation statements)

References 60 publications

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“…The δ 13 C org of bulk rock from Gorl and Grissian/Grissiano has values between ca. -22.9 ‰ and -18.6 ‰, which are comparable with those of other Cisuralian continental organic matter and plants (e.g., Peters-Kottig et al 2006;Forte et al 2018b;Dong et al 2021). Within this range, variations may be related to a change in the carbon isotope composition of atmospheric carbon, to local environmental factors such as water stress, to variations in provenance (e.g., a different taxonomic composition of plant fragments in the sample; or varying proportions in the type of organic matter), or even to differential diagenesis.…”

Section: Stable Carbon Isotopes and Comparison With Palynological Datasupporting

confidence: 65%

“…Spore-rich assemblages are rare in the Euramerican Cisuralian, and were restricted to small wet spots, while dominating saccates, especially taeniate bisaccates, derived from xeromorphic-hygromorphic and xeromorphic par- ent plants were ubiquitous. Such assemblages are well known and have been recorded e.g., from the Tregiovo Basin (Forte et al 2018b) and the Lodève Basin (Doubinger et al 1987).…”

Section: Palynofacies and Sporomorph Analysesmentioning

confidence: 85%

“…Some of these epiclastic units (i.e., in the Tregiovo Basin) are age-constrained by radiometric dating in the under-and overlying volcanic unit and are well-known for their abundant plant macro-and microfossils as well as vertebrate and invertebrate remains and vertebrate traces (e.g., Cassinis & Doubinger 1991Cassinis & Neri 1992; Barth & Mohr 1994;Neri et al 1999;Visscher et al 2001;Avanzini et al 2011;Forte et al 2017;Marchetti et al 2017;Forte et al 2018a). However, only few studies integrate the different terrestrial ecosystem components to reconstruct palaeoenvironments and climate changes (Marchetti et al 2015(Marchetti et al , 2022Forte et al 2018b). In combination with sedimentological analyses, the study of the sedimentary organic matter particles (palynofacies analysis) is considered a useful tool to reconstruct palaeoenvironments and depositional settings both in marine (e.g., Tyson 1993Tyson , 1995Batten 1996) and terrestrial settings (e.g., Batten 1996;Martín-Closas et al 2005;Müller et al 2006;Cirilli et al 2018;Aggarwal 2021;Spina et al 2021).…”

Section: Introductionmentioning

confidence: 99%

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Reconstructing Kungurian (Cisuralian, Permian) Terrestrial Environments Within a Megacaldera in the Southern Alps (N-Italy) Using Lithofacies Analysis, Palynology and Stable Carbon Isotopes

Vallé¹,

Nowak²,

Kustatscher³

et al. 2023

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During the Permian, climate experienced a change from icehouse to greenhouse conditions. Few multidisciplinary studies have investigated Kungurian (late Cisuralian) tropical terrestrial ecosystem and climate changes. Here, we apply an interdisciplinary approach to two alluvial-lacustrine successions of the Athesian Volcanic Group (Southern Alps, northern Italy) deposited in a Kungurian megacaldera during periods of volcanic quiescence. Sedimentological analysis combined with palynofacies studies allowed the reconstruction of the depositional environments. The study of sporomorph assemblages and stable organic carbon isotopes provided information on plant communities and the climate context. Two different depositional environments were present in the megacaldera: one proximal and one more distal with respect to the source, distinguished by a slightly different composition of the sediments, palynofacies and organic carbon isotopes. The plant community in the area was dominated by xeromorphic-hygromorphic taxa. The δ13Corgvalues are comparable to those of other Cisuralian continental organic matter and plants. The stable carbon isotope values show a small variability, which correlates weakly, but significantly, with the abundance of xeromorphic elements. All observations support deposition during semiarid to arid climate conditions, typical of the mid-late Cisuralian in the area.

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Section: Stable Carbon Isotopes and Comparison With Palynological Datasupporting

confidence: 65%

Section: Palynofacies and Sporomorph Analysesmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Reconstructing Kungurian (Cisuralian, Permian) Terrestrial Environments Within a Megacaldera in the Southern Alps (N-Italy) Using Lithofacies Analysis, Palynology and Stable Carbon Isotopes

Vallé¹,

Nowak²,

Kustatscher³

et al. 2023

RIPS

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“…Some studies suggest that it is likely a result of regional aridity (e.g., Xu et al, 2020). value may be the response of the large scale organic carbon burial in P 2 glacial interval (Montañez et al, 2007), which was recorded not only in the high-latitude area (Birgenheier et al, 2010), but also in the paleoequatorial area (Forte et al, 2018;Liu et al, 2018). The δ 13 C org curve for the Carboniferous and Permian (the Asselian to early Kungurian) in the NCB is nearly consistent with the global δ 13 C org pattern (Peters-Kottig et al, 2006;Nordt et al, 2016) (Figure 7).…”

Section: Chemostratigraphymentioning

confidence: 99%

Carboniferous and Permian integrative stratigraphy and timescale of North China Block

Shen

et al. 2022

Sci. China Earth Sci.

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The Carboniferous-Permian strata in the North China Block (NCB) contain abundant fossils, coals and natural gases. Establishing a high-resolution timescale for the Carboniferous and Permian in the NCB is essential to understand the geologic events and explore the spatial and temporal distributions of the natural resources. The upper Carboniferous and the basal part of Permian are relatively well correlated because they yield marine conodont and fusuline fossils. However, the Permian terrestrial strata mostly rely on poorly constrained palynostratigraphy and phytostratigraphy and are short of the precise geochronologic constraints on the correlation with the marine strata. This study provides a critical review on the state-of-the-art of the latest Carboniferous and Permian chronostratigraphic and biostratigraphic frameworks and stratigraphic correlation in the NCB. The Penchi Formation ranges from lower Bashkirian to lower Gzhelian; the Taiyuan Formation is assigned to the upper Gzhelian to lower Asselian; the Shansi and Lower Shihhotse formations are from middle Asselian to lower Sakmarian; the Upper Shihhotse Formation is assigned to upper Artinskian to lower Kungurian, and the Sunjiagou Formation was assigned to Lopingian, respectively. A long hiatus up to ~20 Myr between the Upper Shihhotse and Sunjiagou formations, mainly marked by a large-scale erosional surface at the base of a coarse conglomeratic sandstone unit and/or multiple paleosol layers as well as significant differences of floras between these two lithostratigraphic units, is present probably due to tectonic uplift in association with the closure of the Paleo Asian Ocean (PAO) during the Cisuralian and Guadalupian. The possible amplitude of sea-level changes from Carboniferous to Permian on the NCB is estimated from 0 to 40 m. The floral succession, depositional records and organic carbon isotope profiles suggest that the latest Carboniferous and earliest Permian was a favorable period for coal accumulation under an ever-wet and warm climate, followed by a prominent shift to dry climate from early-middle Cisuralian. This climatic shift during the Permian was mainly resulted from northward migration of the Pangea and the closure of the PAO, which is comparable with the Carboniferous and Permian trends in central Europe.

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“…have lasted few million years; the stasis is recorded by the formation of small sedimentary sub-basins with fluvial and lacustrine sediments that preserve plant remains, sporomorphs, conchostracans, bivalves, ostracods, trace fossils and tetrapod remains (e.g. Leonardi 1959;Remy & Remy 1978;Neri et al 2000;Fritz & Krainer 2006;Avanzini et al 2007Avanzini et al , 2008Avanzini et al , 2010Marchetti et al 2015b;Forte et al 2017;2018a, 2018b. The Guncina Formation crops out in the NW area of the Athesian District (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Permian Non-Marine Bivalves From the Collio and Guncina Formations (Southern Alps, Italy): Revised Biostratigraphy and Palaeobiogeography

Silantiev

Marchetti

Ronchi

et al. 2022

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Non-marine bivalves are key fossils in Permian continental stratigraphy and palaeogeography. Although known since the end of 19th century, the occurrences from the continental basins of the Southern Alps have never been extensively studied. The non-marine bivalves from the Lower Permian Collio Formation (Brescian pre-Alps) are herein revised, and those from the Guncina Formation (Athesian District) are described for the first time. These two units yielded non-marine bivalves belonging to the genus Palaeomutela sensu lato, which is widespread in the Permian continental successions of eastern Euramerica. Three Palaeomutela morphotypes have been herein described: oval-subtriangular, subtrapezoidal and elongated. The latter includes several specimens herein assigned to Palaeomutela (Palaeanodonta) berrutii sp. nov. and dominates the Collio Formation association. The Guncina Formation yielded also the genus Redikorella, for the first time co-occurring on the same stratigraphic horizon of Palaeomutela, herein assigned to Palaeomutela (Palaeanodonta) guncinaensis sp. nov. To-date, it was generally accepted that the first members of the genera Palaeomutela and Redikorella occurred during the Ufimian (late Kungurian of the global scale) in the non-marine basins of the Cis-Ural Foredeep and of Angara, respectively. Such new finds in the early-middle Kungurian of southwestern Europe, well constrained by radioisotopic dating, suggest new global first appearance (First Appearance Datum) and a possible new center of origin of these genera. This fact raises new questions on biostratigraphy, palaeobiogeography and palaeoecology, which will require further research. If we assume that the genera Palaeomutela and Redikorella had only one center of origin, we need to hypothesise possible migration routes from SW Europe to the continental basins of Eastern Europe and Angara. Apparently, such migration could be better supported by a Pangaea B palaeogeographic configuration.

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The Permian (Kungurian, Cisuralian) palaeoenvironment and palaeoclimate of the Tregiovo Basin, Italy: Palaeobotanical, palynological and geochemical investigations

Cited by 16 publications

References 60 publications

Reconstructing Kungurian (Cisuralian, Permian) Terrestrial Environments Within a Megacaldera in the Southern Alps (N-Italy) Using Lithofacies Analysis, Palynology and Stable Carbon Isotopes

Reconstructing Kungurian (Cisuralian, Permian) Terrestrial Environments Within a Megacaldera in the Southern Alps (N-Italy) Using Lithofacies Analysis, Palynology and Stable Carbon Isotopes

Carboniferous and Permian integrative stratigraphy and timescale of North China Block

Permian Non-Marine Bivalves From the Collio and Guncina Formations (Southern Alps, Italy): Revised Biostratigraphy and Palaeobiogeography

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