Refining the late Silurian sea-level history of the Prague Syncline—a case study based on the Přídolí GSSP (Czech Republic)

Vacek, František; Slavík, Ladislav; Sobień, Katarzyna; Čáp, Pavel

doi:10.1007/s10347-018-0542-3

Cited by 10 publications

(12 citation statements)

References 58 publications

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“…Liu et al, 2017;Vacek et al, 2018) and show a similar pattern. The middle Telychian stage is characterized by a clear sea-level drop (M. E Johnson, 1996Johnson, , 2010Loydell, 2007;Loydell, 2010;Vacek et al, 2018). On Gotland, there is some evidence that this sea-level drop was particularly large effecting even the most distally preserved parts of the carbonate platform which were subaerially exposed (M. Calner, 2002).…”

Section: Figurementioning

confidence: 60%

“…E. Johnson et al, 1991; Z. Liu et al, 2017;Vacek et al, 2018) and show a similar pattern. The middle Telychian stage is characterized by a clear sea-level drop (M. E Johnson, 1996Johnson, , 2010Loydell, 2007;Loydell, 2010;Vacek et al, 2018).…”

Section: Figurementioning

confidence: 77%

“…E Johnson, 2010;Z. Liu, Algeo, Guo, Du, & Lu, 2017;Munnecke et al, 2010;Vacek, Slavík, Sobień, & Čáp, 2018). Haq and Schutter (2008) selected stable cratonic sequences as regional reference points on several different palaeocontinents and developed a standard for comparison of global patterns in sea-level fluctuations.…”

Section: Figurementioning

confidence: 99%

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The Silurian red beds of Tarim Basin: Signals of palaeoenvironment, palaeoclimate, and sea‐level change

Liu

Lin

et al. 2019

Geological Journal

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The Silurian red beds of the Tarim Basin were formed in a coastal tidal and fluvial delta environment. They consist of red mudstone layers of the lower Tataaiertag Formation and separate the grey-green muddy sandstones of the Kalpintag Formation from the red sandstones of the upper Tataaiertag Formation. These mudstones are regarded as the most important regional seal for Silurian oil reservoirs. They contain a significant record of palaeoenvironmental and palaeoclimate changes which is related to global sea-level changes. Based on a systematic and continuous sedimentary study and multiple geochemistry analyses of samples taken from the Sishichang outcrop profile in west of the Tarim Basin, the Early-Middle Silurian palaeoclimate and sea-level curve have been reconstructed. The Early-Middle Silurian Tarim Basin encountered five intervals of climate change, from humid transitioning to semi-humid and dry-hot climate which shows signs of generally increasing oxidation. The reconstructed sea-level curve indicates five sea-level cycles throughout the Early-Middle Silurian succession. The most significant sea-level drop occurred during the early Telychian stage, which represents the onset of the red mudstone section of the Tataaiertag Formation. This new sealevel curve shows some differences compared with the earlier proposed global sealevel curves. The dry-hot climate occurred during the late Telychian stage and the beginning of Wenlock age. The Early-Middle Silurian sea-level change of the TarimBasin was mostly synchronical to the eustacy. However, regional tectonic activities during the early Telychian stage further enhanced the effect of the global sea-level fall and lead to a dry-hot climate trend which also caused the creation of the red beds of the Silurian period.

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Section: Figurementioning

confidence: 60%

Section: Figurementioning

confidence: 77%

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The Silurian red beds of Tarim Basin: Signals of palaeoenvironment, palaeoclimate, and sea‐level change

Liu

Lin

et al. 2019

Geological Journal

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“…Two international GSSP stratotypes have been established in the late Silurian strata of the Prague Basin, that define the boundary between the Ludlow and Přídolí series and the Přídolí Series and the Lower Devonian Series (see Chlupáč et al 1972, Chlupáč and Vacek 2003, Fatka et al 2003, Manda and Frýda 2010 for discussion and references). The Požáry Formation is facially less varied than the Kopanina Formation due to a significant transgression that took place around the Ludlow/Přídolí boundary interval (Kříž et al 1986, Kříž 1998a, Vacek et al 2018. Consequently, the Požáry Formation in all parts of the Prague Basin consists of dark, platy biomicritic and bioclastic limestones with calcareous shale intercalations.…”

Section: Geological Settingsmentioning

confidence: 99%

“…Consequently, the Požáry Formation in all parts of the Prague Basin consists of dark, platy biomicritic and bioclastic limestones with calcareous shale intercalations. In the late Přídolí, bioclastic crinoidal and cephalopod limestones (Kříž et al 1986, Ferretti and Kříž 1995, Kříž 1998b were deposited as the basin shallowed (Vacek et al 2018).…”

Section: Geological Settingsmentioning

confidence: 99%

Review of ascocerid cephalopods from the upper Silurian of the Prague Basin (Central Bohemia) – history of research and palaeobiogeographic relationships

Aubrechtová

2019

Fossil Imprint

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Abstract The order Ascocerida Kuhn, 1949 includes rare and morphologically unique early Palaeozoic cephalopods, in which periodic shell truncation occurred during ontogeny; mature shells subsequently became inflated, with thin sigmoidal septa and phragmocone chambers situated above the living chamber. The ascocerids are at present known mainly from North America and Baltoscandic Europe. The group was first described by J. Barrande in the mid 1800’s from the upper Silurian of Bohemia. Finds of ascocerid fossils in Bohemia are generally scarce but Barrande’s collection includes tens of well-preserved specimens. These are briefly reviewed in the present paper and additional, more recently collected material is also discussed. In Bohemia (Prague Basin), ascocerids occur in limestones of Ludlow to late Přídolí age. Their maximum diversity and abundance was reached close to the Ludlow/Přídolí boundary interval. Five out of the fourteen currently recognized Bohemian species are also known from late Silurian strata in Sweden (the island of Gotland). The ascocerids thus illustrate palaeobiogeographic relationships between the Prague Basin and Baltica during the late Silurian.

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Endemic earliest Lochkovian species ofCaudicriodus(conodont) from southern Laurentia and the Silurian–Devonian boundary

Barrick

Sundgren

McAdams

2021

Papers in Palaeontology

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Two Caudicriodus species from lowermost Devonian strata in southern Laurentia (Texas-Oklahoma-Western Tennessee), C. anitae sp. nov. and C. murphyi sp. nov., are endemic forms that appeared during the positive d 13 C excursion associated with the Klonk Event. The other Caudicriodus species that occur during the Klonk Event and that are often used to recognize the base of the Devonian, C. hesperius and C. woschmidti, differ in that the I elements of the southern Laurentia species possess a middle row of nodes on the transverse ridges of the spindle. The apparatus of C. murphyi sp. nov. possesses three groups of elements in addition to the I element: F elements (short wide coniforms); D elements (denticles on the posterior margin) and C elements (slender coniforms with basally flaring costae). Strong provinciality in slightly younger Lochkovian Caudicriodus species was demonstrated earlier, and we propose that Caudicriodus species radiated independently into endemic species in different geographic regions just before or during the Klonk Event. A form originally described as C. woschmidti hesperius by Simpson (1998) is reinterpreted as a late Ludlow-Pridoli species of Praeicriodus, P. simpsoni sp. nov., with an I element and apparatus structure probably ancestral to Caudicriodus.

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Refining the late Silurian sea-level history of the Prague Syncline—a case study based on the Přídolí GSSP (Czech Republic)

Cited by 10 publications

References 58 publications

The Silurian red beds of Tarim Basin: Signals of palaeoenvironment, palaeoclimate, and sea‐level change

The Silurian red beds of Tarim Basin: Signals of palaeoenvironment, palaeoclimate, and sea‐level change

Review of ascocerid cephalopods from the upper Silurian of the Prague Basin (Central Bohemia) – history of research and palaeobiogeographic relationships

Endemic earliest Lochkovian species ofCaudicriodus(conodont) from southern Laurentia and the Silurian–Devonian boundary

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