Source rock potential of the Oligocene Menilite Formation in the Czech sector of the Subsilesian Unit (Flysch Carpathians)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F20%3A00534748" target="_blank" >RIV/67985891:_____/20:00534748 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/20:00116486 RIV/00025798:_____/20:00000271

Výsledek na webu

<a href="http://www.geologicacarpathica.com/browse-journal/volumes/71-5/article-956/" target="_blank" >http://www.geologicacarpathica.com/browse-journal/volumes/71-5/article-956/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31577/GeolCarp.71.5.2" target="_blank" >10.31577/GeolCarp.71.5.2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Source rock potential of the Oligocene Menilite Formation in the Czech sector of the Subsilesian Unit (Flysch Carpathians)

Popis výsledku v původním jazyce

The Oligocene Menilite Formation represents the most important hydrocarbon source rock in the Flysch Carpathians. The formation is laterally uniform across long distances but shows strong vertical heterogeneity reflecting changes in depositional environments, which control the source rock potential. In the Czech Republic, the Menilite Formation is subdivided into the Subchert Member (nannofossil zone NP22), Chert Member (upper NP22 to lower NP23), Dynów Marlstone (NP23) and Šitbořice Member (upper NP23 to lower NP25). The present study describes in detail the Bystřice nad Olší section in the Subsilesian Unit where all four members are exposed including the uppermost part of the underlying Frýdlant Formation (Sheshory Marls). The present Frýdlant Formation has a negligible source rock potential compared to the Menilite Formation. The Menilite Formation in the Bystřice nad Olší section has mostly “good” source rock potential, although the TOC indicates “very good” potential. The Subchert Member (average TOC: 3.6 wt.%, HI up to 505 mg HC/g TOC) and the Chert Member (average TOC: 2.2 wt.%, HI up to 790 mg HC/g TOC) are the most prolific units. Based on organic petrography and HI, the kerogen is classified as type II and I. Indications of admixtures of type III kerogen are limited to samples with low TOC contents (< 1 wt.%). The Source Potential Index (SPI) of the Menilite Formation in the Subsilesian Unit of the Czech Republic is estimated as ~1.15 t HC/m2 which is comparable to SPI calculated for sections in the Silesian and Ždánice units in the Czech Republic and for the Waschberg Zone in Austria. Significantly higher SPI values estimated for the Polish and especially the Ukrainian Carpathians (up to 74.5 t HC/m2) are caused by a wider stratigraphic range, several times greater thickness and higher total organic matter content.nn

Název v anglickém jazyce

Source rock potential of the Oligocene Menilite Formation in the Czech sector of the Subsilesian Unit (Flysch Carpathians)

Popis výsledku anglicky

The Oligocene Menilite Formation represents the most important hydrocarbon source rock in the Flysch Carpathians. The formation is laterally uniform across long distances but shows strong vertical heterogeneity reflecting changes in depositional environments, which control the source rock potential. In the Czech Republic, the Menilite Formation is subdivided into the Subchert Member (nannofossil zone NP22), Chert Member (upper NP22 to lower NP23), Dynów Marlstone (NP23) and Šitbořice Member (upper NP23 to lower NP25). The present study describes in detail the Bystřice nad Olší section in the Subsilesian Unit where all four members are exposed including the uppermost part of the underlying Frýdlant Formation (Sheshory Marls). The present Frýdlant Formation has a negligible source rock potential compared to the Menilite Formation. The Menilite Formation in the Bystřice nad Olší section has mostly “good” source rock potential, although the TOC indicates “very good” potential. The Subchert Member (average TOC: 3.6 wt.%, HI up to 505 mg HC/g TOC) and the Chert Member (average TOC: 2.2 wt.%, HI up to 790 mg HC/g TOC) are the most prolific units. Based on organic petrography and HI, the kerogen is classified as type II and I. Indications of admixtures of type III kerogen are limited to samples with low TOC contents (< 1 wt.%). The Source Potential Index (SPI) of the Menilite Formation in the Subsilesian Unit of the Czech Republic is estimated as ~1.15 t HC/m2 which is comparable to SPI calculated for sections in the Silesian and Ždánice units in the Czech Republic and for the Waschberg Zone in Austria. Significantly higher SPI values estimated for the Polish and especially the Ukrainian Carpathians (up to 74.5 t HC/m2) are caused by a wider stratigraphic range, several times greater thickness and higher total organic matter content.nn

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Geologica Carpathica

ISSN

1335-0552

e-ISSN

—

Svazek periodika

71

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

16

Strana od-do

402-417

Kód UT WoS článku

000587510000002

EID výsledku v databázi Scopus

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