BÁBEK, Ondřej, Tomáš PŘIKRYL a Jindřich HLADIL. Progressive drowning of carbonate platform in the Moravo-Silesian Basin (Czech Republic) before the Frasnian/Famennian event: facies, compositional variations and gamma-ray spectrometry. Facies. Německo: Springer Berlin / Heidelberg, 2007, roč. 53, č. 2, s. 293-316, 23 s. ISSN 0172-9179.
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Základní údaje
Originální název Progressive drowning of carbonate platform in the Moravo-Silesian Basin (Czech Republic) before the Frasnian/Famennian event: facies, compositional variations and gamma-ray spectrometry
Název česky Potupné potápění karbonátové platformy moravskoslezské pánve (Česká republika) před frasn/famenským eventem: facie, kompoziční změny a gamaspektrometrie
Autoři BÁBEK, Ondřej (203 Česká republika, garant, domácí), Tomáš PŘIKRYL (203 Česká republika) a Jindřich HLADIL (203 Česká republika).
Vydání Facies, Německo, Springer Berlin / Heidelberg, 2007, 0172-9179.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10500 1.5. Earth and related environmental sciences
Stát vydavatele Německo
Utajení není předmětem státního či obchodního tajemství
Impakt faktor Impact factor: 0.989
Kód RIV RIV/00216224:14310/07:00050787
Organizační jednotka Přírodovědecká fakulta
UT WoS 000245492300009
Klíčová slova anglicky Devonian; Frasnian/Famennian; extinction; carbonate platform drowning; differential subsidence; gamma-ray spectrometry
Štítky carbonate platform drowning, Devonian, differential subsidence, extinction, Frasnian/Famennian, gamma-ray spectrometry
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnil: doc. RNDr. Rostislav Melichar, Dr., učo 56. Změněno: 10. 4. 2012 10:45.
Anotace
The Moravo Silesian Basin (MSB; eastern Czech Republic and southern Poland) hosted an extensive shallow water carbonate platform in the Middle Devonian to Frasnian interval. The platform drowned in a stepwise fashion from the Palmatolepis hassi to the Pa. linguiformis zone. Three types of drowning successions were revealed from conodont biostratigraphy, facies, microfacies and gamma ray spectrometry data: (A) drowning to periplatform turbidite setting; (B) drowning to (hemi)pelagic seamount setting and (C) drowning associated with the stratigraphical gap. In the lower Pa. hassi zone, rapid subsidence caused the platform to drown locally along the N S to NW SE trending faults (type A drowning). In the upper Pa. rhenana to the Pa. linguiformis zone, the drowning accelerated in the western part of the MSB due to locally higher subsidence rates combined with the Late Frasnian biotic crisis (type B). In the southern part of the basin, the platform emerged shortly before the Frasnian/Famennian (F/F) boundary and drowned in the Early to Late Famennian (type C). The primary cause of drowning was differential subsidence at the Laurussian passive margin. Eustatic sea level fluctuations, if any, contributed only to a minor extent to the Late Frasnian drowning, but were effective in type C drowning during the Famennian. The drowning boundaries are associated with increased contents of K and Th, reflecting the deceleration of carbonate production. Uranium contents display isolated peaks that roughly correlate with the drowning boundaries or the stratigraphic gaps associated with the F/F boundary. The uranium contents are considered to reflect local depositional conditions and are not suitable for stratigraphic correlation. On the other hand, from the K and Th contents, we can infer Late Frasnian sea-level fluctuations with duration on the order of 1 Myr. These cyclic variations in K and Th contents proved to be useful in platform to basin stratigraphic correlation.
Anotace česky
The Moravo Silesian Basin (MSB; eastern Czech Republic and southern Poland) hosted an extensive shallow water carbonate platform in the Middle Devonian to Frasnian interval. The platform drowned in a stepwise fashion from the Palmatolepis hassi to the Pa. linguiformis zone. Three types of drowning successions were revealed from conodont biostratigraphy, facies, microfacies and gamma ray spectrometry data: (A) drowning to periplatform turbidite setting; (B) drowning to (hemi)pelagic seamount setting and (C) drowning associated with the stratigraphical gap. In the lower Pa. hassi zone, rapid subsidence caused the platform to drown locally along the N S to NW SE trending faults (type A drowning). In the upper Pa. rhenana to the Pa. linguiformis zone, the drowning accelerated in the western part of the MSB due to locally higher subsidence rates combined with the Late Frasnian biotic crisis (type B). In the southern part of the basin, the platform emerged shortly before the Frasnian/Famennian (F/F) boundary and drowned in the Early to Late Famennian (type C). The primary cause of drowning was differential subsidence at the Laurussian passive margin. Eustatic sea-level fluctuations, if any, contributed only to a minor extent to the Late Frasnian drowning, but were effective in type C drowning during the Famennian. The drowning boundaries are associated with increased contents of K and Th, reflecting the deceleration of carbonate production. Uranium contents display isolated peaks that roughly correlate with the drowning boundaries or the stratigraphic gaps associated with the F/F boundary. The uranium contents are considered to reflect local depositional conditions and are not suitable for stratigraphic correlation. On the other hand, from the K and Th contents, we can infer Late Frasnian sea level fluctuations with duration on the order of 1 Myr. These cyclic variations in K and Th contents proved to be useful in platform to basin stratigraphic correlation.
Návaznosti
MSM0021622412, záměrNázev: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Akronym: INCHEMBIOL)
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální , regionální a lokální úrovni
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