A Geochemical and Petrographical Characterization of Organic
Matter in the Jurassic Mikulov Marls from the Czech Republic

J 2015

A Geochemical and Petrographical Characterization of Organic Matter in the Jurassic Mikulov Marls from the Czech Republic

GERŠLOVÁ, Eva, Vladimír OPLETAL, Ivana SÝKOROVÁ, Iva SEDLÁKOVÁ, Milan GERŠL et. al.

Basic information

Original name

A Geochemical and Petrographical Characterization of Organic Matter in the Jurassic Mikulov Marls from the Czech Republic

Authors

GERŠLOVÁ, Eva (203 Czech Republic, guarantor, belonging to the institution), Vladimír OPLETAL (203 Czech Republic), Ivana SÝKOROVÁ (203 Czech Republic), Iva SEDLÁKOVÁ (203 Czech Republic, belonging to the institution) and Milan GERŠL (203 Czech Republic)

Edition

International Journal of Coal Geology, 2015, 0166-5162

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 3.294

RIV identification code

RIV/00216224:14310/15:00082897

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.coal.2015.03.002

UT WoS

000354341200005

Keywords in English

Mikulov Marls; kerogen type; thermal maturity; vitrinite reflectance; Rock-Eval pyrolysis

Abstract

V originále

In this study a Rock-Eval pyrolysis, a petrographic composition of organic matter, vitrinite reflectance and gas chromatography were undertaken on borehole cores from the Mikulov Marls in order to define the organic matter type and determine the thermal maturity. The analyzed samples covered a depth interval of between 2,300 m and 4,500 m. The studied sediments were dark-colored, moderately laminated shale’s throughout which appear uniform upon visual examination. The geochemical analyses revealed that the source rock potential of the Mikulov Marls is from fair to good. According to the Rock-Eval pyrolysis, the organic matter in the samples was classified as kerogen type II-III. This classification is not supported by the results from the other used methods. The evaluation of the organic macerals demonstrated the dominant role of liptinite with prevailing liptodetrinite accompanied by a variable content of alginite, bituminite, and sporadic sporinite and resinite. The alginite consists mainly of lamalginite, derived from colonial planktonic or benthonic algae. Based on these results, the Mikulov Marls represent the kerogen type II. These results are also supported with a strong n-alkane odd-carbon-number predominance at n-C15, n-C17 and n-C19 range on the gas chromatography.

Citovat

GERŠLOVÁ, Eva, Vladimír OPLETAL, Ivana SÝKOROVÁ, Iva SEDLÁKOVÁ and Milan GERŠL. A Geochemical and Petrographical Characterization of Organic Matter in the Jurassic Mikulov Marls from the Czech Republic. International Journal of Coal Geology. 2015, vol. 141, MARCH, p. 42-50. ISSN 0166-5162. Available from: https://dx.doi.org/10.1016/j.coal.2015.03.002.

@article{1299583,
   author = {Geršlová, Eva and Opletal, Vladimír and Sýkorová, Ivana and Sedláková, Iva and Geršl, Milan},
   article_number = {MARCH},
   doi = {http://dx.doi.org/10.1016/j.coal.2015.03.002},
   keywords = {Mikulov Marls; kerogen type; thermal maturity; vitrinite reflectance; Rock-Eval pyrolysis},
   language = {eng},
   issn = {0166-5162},
   journal = {International Journal of Coal Geology},
   title = {A Geochemical and Petrographical Characterization of Organic Matter in the Jurassic Mikulov Marls from the Czech Republic},
   url = {http://dx.doi.org/10.1016/j.coal.2015.03.002},
   volume = {141},
   year = {2015}
}

TY  - JOUR
ID  - 1299583
AU  - Geršlová, Eva - Opletal, Vladimír - Sýkorová, Ivana - Sedláková, Iva - Geršl, Milan
PY  - 2015
TI  - A Geochemical and Petrographical Characterization of Organic Matter in the Jurassic Mikulov Marls from the Czech Republic
JF  - International Journal of Coal Geology
VL  - 141
IS  - MARCH
SP  - 42-50
EP  - 42-50
SN  - 01665162
KW  - Mikulov Marls
KW  - kerogen type
KW  - thermal maturity
KW  - vitrinite reflectance
KW  - Rock-Eval pyrolysis
UR  - http://dx.doi.org/10.1016/j.coal.2015.03.002
L2  - http://dx.doi.org/10.1016/j.coal.2015.03.002
N2  - In this study a Rock-Eval pyrolysis, a petrographic composition of organic matter, vitrinite reflectance and gas chromatography were undertaken on borehole cores from the Mikulov Marls in order to define the organic matter type and determine the thermal maturity. The analyzed samples covered a depth interval of between 2,300 m and 4,500 m. The studied sediments were dark-colored, moderately laminated shale’s throughout which appear uniform upon visual examination. The geochemical analyses revealed that the source rock potential of the Mikulov Marls is from fair to good. According to the Rock-Eval pyrolysis, the organic matter in the samples was classified as kerogen type II-III. This classification is not supported by the results from the other used methods. The evaluation of the organic macerals demonstrated the dominant role of liptinite with prevailing liptodetrinite accompanied by a variable content of alginite, bituminite, and sporadic sporinite and resinite. The alginite consists mainly of lamalginite, derived from colonial planktonic or benthonic algae. Based on these results, the Mikulov Marls represent the kerogen type II. These results are also supported with a strong n-alkane odd-carbon-number predominance at n-C15, n-C17 and n-C19 range on the gas chromatography.
ER  -

GERŠLOVÁ, Eva, Vladimír OPLETAL, Ivana SÝKOROVÁ, Iva SEDLÁKOVÁ and Milan GERŠL. A Geochemical and Petrographical Characterization of Organic Matter in the Jurassic Mikulov Marls from the Czech Republic. \textit{International Journal of Coal Geology}. 2015, vol.~141, MARCH, p.~42-50. ISSN~0166-5162. Available from: https://dx.doi.org/10.1016/j.coal.2015.03.002.

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