Jurassic pebbles in the Cretaceous sandstones of the Bohemian Basin as a possible tool for the reconstruction of Late Jurassic and Late Cretaceous paleogeography

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000392" target="_blank" >RIV/00025798:_____/19:00000392 - isvavai.cz</a>

Výsledek na webu

<a href="http://voluminajurassica.org" target="_blank" >http://voluminajurassica.org</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.7306/VJ.17.2" target="_blank" >10.7306/VJ.17.2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Jurassic pebbles in the Cretaceous sandstones of the Bohemian Basin as a possible tool for the reconstruction of Late Jurassic and Late Cretaceous paleogeography

Popis výsledku v původním jazyce

The new find of pebbles of the Jurassic silicites in the Coniacian sandstones of the Bohemian Cretaceous Basin in N Bohemia permitted to analyse the stratigraphic extent of Jurassic sediments in the NW part of the Bohemian Massif. The studied silicites are dominated by the rhax microfacies, while bioclastic and oolitic microfacies are less common. The thickest section in Jurassic sediments in the NW part of the Bohemian Massif has been obtained from the Doubice borehole. It is represented by the basal clastics overlain by a 70 m thick succession of silicite-free carbonate rocks referred from the Callovian to Lower Kimmeridgian. These deposits are dominated by the bioclastic microfacies whereas the rhax and oolitic microfacies are missing. The studied silicite-bearing sequence is younger than the carbonate rocks in borehole Doubice and has been deposited mostly in a deeper zone probably during the Late Kimmeridgian transgression, much like in the Upper Frankenalb in SE Germany. The extensive Jurassic basin on the Bohemian Massif was connected with the S part of the Polish and German basins and – via the Hessian (Saxonian) Seaway – with the Jurassic basin in SE Germany. The Jurassic sediments were mostly eroded from the Bohemian Massif during the |Early Cretaceous with the exception of small relics. The remnant of the Jurassic deposits preserved in the area of the West Sudetic Island supplied coarse debris during Late Cretaceous to the Bohemian Cretaceous Basin.

Název v anglickém jazyce

Jurassic pebbles in the Cretaceous sandstones of the Bohemian Basin as a possible tool for the reconstruction of Late Jurassic and Late Cretaceous paleogeography

Popis výsledku anglicky

The new find of pebbles of the Jurassic silicites in the Coniacian sandstones of the Bohemian Cretaceous Basin in N Bohemia permitted to analyse the stratigraphic extent of Jurassic sediments in the NW part of the Bohemian Massif. The studied silicites are dominated by the rhax microfacies, while bioclastic and oolitic microfacies are less common. The thickest section in Jurassic sediments in the NW part of the Bohemian Massif has been obtained from the Doubice borehole. It is represented by the basal clastics overlain by a 70 m thick succession of silicite-free carbonate rocks referred from the Callovian to Lower Kimmeridgian. These deposits are dominated by the bioclastic microfacies whereas the rhax and oolitic microfacies are missing. The studied silicite-bearing sequence is younger than the carbonate rocks in borehole Doubice and has been deposited mostly in a deeper zone probably during the Late Kimmeridgian transgression, much like in the Upper Frankenalb in SE Germany. The extensive Jurassic basin on the Bohemian Massif was connected with the S part of the Polish and German basins and – via the Hessian (Saxonian) Seaway – with the Jurassic basin in SE Germany. The Jurassic sediments were mostly eroded from the Bohemian Massif during the |Early Cretaceous with the exception of small relics. The remnant of the Jurassic deposits preserved in the area of the West Sudetic Island supplied coarse debris during Late Cretaceous to the Bohemian Cretaceous Basin.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Volumina Jurassica

ISSN

1896-7876

e-ISSN

—

Svazek periodika

17

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

22

Strana od-do

17-38

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85091669709