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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10505 - Geology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Volumina Jurassica

ISSN

1896-7876

e-ISSN

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Volume of the periodical

17

Issue of the periodical within the volume

1

Country of publishing house

PL - POLAND

Number of pages

22

Pages from-to

17-38

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85091669709