Neuspořádaný uhlík v tektonických zónách paleozoických sedimentů (devon moravskoslezského paleozoika)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00123841" target="_blank" >RIV/00216224:14310/21:00123841 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.muni.cz/gvms/article/view/15627/16403" target="_blank" >https://journals.muni.cz/gvms/article/view/15627/16403</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5817/GVMS2021-15627" target="_blank" >10.5817/GVMS2021-15627</a>

Jazyk výsledku

čeština

Název v původním jazyce

Neuspořádaný uhlík v tektonických zónách paleozoických sedimentů (devon moravskoslezského paleozoika)

Popis výsledku v původním jazyce

Dark carbonaceous matter staining tectonic zones and deformed carbonate strata of the Moravo-Silesian Palaeozoic were studied by several methods. Samples were taken from tectonic structures in the quarry in Čebín and in the middle quarry in Mokrá near Brno. The grey-black-coloured rocks are clearly macroscopically and microscopically deformed, show traces of brittle ductile shear deformation and with foliation developed. The dark colour is caused by the presence of black carbon matter, which is documented by methods of optical and electron (BSE) microscopy and Raman spectra. The mineral assemblage has the character of hydrothermal mineralization migrating along tectonic structures. Mineralization consists mainly of quartz, carbonates (calcite, dolomite), phyllosilicates (mica, chlorite, kaolinite), pyrite and it also includes black carbon. Apatite is one of the interesting and unusual components. The content of organic and elemental carbon determined by the thermo-optical method in intensively mineralized zones is around 2.5 mass %. The carbonaceous matter was more accurately identified using Raman spectra. The spectra at the two studied localities have a very similar shape and are very close to the spectra of black carbon in low-grade carbon coal matter, very disordered carbon and/or amorphous carbon (coal, kerogen). The spectra show the presence of peaks in the D, G and 2D regions and are different from the spectra of ordered and disordered graphite. The presence of a small peak G in the analysed spectra (Lorentzian function) also indicates the possible presence of a small amount of more ordered carbon in the studied black carbon matter. The components of the black mineralized zones were most likely mobilized from the surrounding rock formations during the Variscan tectono-metamorphic events. The similarity with the spectra of poorly ordered carbon matter from low metamorphic conditions shows transformation temperatures of 150–280 °C, which is in accordance with other thermometric methods in the region of the southern edge of the Moravo-Silesian Palaeozoic.

Název v anglickém jazyce

Disodered carbon in tectonic zones of the Palaeozoic sediments (Devonian of the Moravosilesian Palaeozoic)

Popis výsledku anglicky

Dark carbonaceous matter staining tectonic zones and deformed carbonate strata of the Moravo-Silesian Palaeozoic were studied by several methods. Samples were taken from tectonic structures in the quarry in Čebín and in the middle quarry in Mokrá near Brno. The grey-black-coloured rocks are clearly macroscopically and microscopically deformed, show traces of brittle ductile shear deformation and with foliation developed. The dark colour is caused by the presence of black carbon matter, which is documented by methods of optical and electron (BSE) microscopy and Raman spectra. The mineral assemblage has the character of hydrothermal mineralization migrating along tectonic structures. Mineralization consists mainly of quartz, carbonates (calcite, dolomite), phyllosilicates (mica, chlorite, kaolinite), pyrite and it also includes black carbon. Apatite is one of the interesting and unusual components. The content of organic and elemental carbon determined by the thermo-optical method in intensively mineralized zones is around 2.5 mass %. The carbonaceous matter was more accurately identified using Raman spectra. The spectra at the two studied localities have a very similar shape and are very close to the spectra of black carbon in low-grade carbon coal matter, very disordered carbon and/or amorphous carbon (coal, kerogen). The spectra show the presence of peaks in the D, G and 2D regions and are different from the spectra of ordered and disordered graphite. The presence of a small peak G in the analysed spectra (Lorentzian function) also indicates the possible presence of a small amount of more ordered carbon in the studied black carbon matter. The components of the black mineralized zones were most likely mobilized from the surrounding rock formations during the Variscan tectono-metamorphic events. The similarity with the spectra of poorly ordered carbon matter from low metamorphic conditions shows transformation temperatures of 150–280 °C, which is in accordance with other thermometric methods in the region of the southern edge of the Moravo-Silesian Palaeozoic.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Geologické výzkumy na Moravě a ve Slezsku

ISSN

1212-6209

e-ISSN

—

Svazek periodika

28

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

73-84

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85125656911