Palaeo-thermal and coalification history of Permo-Carboniferous sedimentary basins of Central and Western Bohemia, Czech Republic: first insights from apatite fission track analysis and vitrinite reflectance modelling

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00511608" target="_blank" >RIV/61389005:_____/19:00511608 - isvavai.cz</a>

Alternative codes found

RIV/67985831:_____/19:00511608 RIV/67985891:_____/19:00511608 RIV/00216208:11310/19:10405449

Result on the web

<a href="http://www.geology.cz/bulletin/fulltext/1696_Suchy_190617.pdf" target="_blank" >http://www.geology.cz/bulletin/fulltext/1696_Suchy_190617.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3140/bull.geosci.1696" target="_blank" >10.3140/bull.geosci.1696</a>

Result language

angličtina

Original language name

Palaeo-thermal and coalification history of Permo-Carboniferous sedimentary basins of Central and Western Bohemia, Czech Republic: first insights from apatite fission track analysis and vitrinite reflectance modelling

Original language description

Thermal modelling using AFTA has shown that the Carboniferous sediments were subjected to maximum temperatures ranging from similar to 75 degrees C in the SW to more than similar to 120 degrees C in the NE, which generally concluded during pre-Triassic times. Thermal records show a gradual cooling between similar to 280-180 Ma, followed by a long Mesozoic to Cenozoic Period of thermal stability, during which time, the sediments resided at constant temperatures of similar to 50-75 degrees C. From similar to 30 Ma onwards, accelerated cooling and erosion occurred, resulting in the present-day exposure of rocks on the surface. The EASY%R-0 modelling of average VR values that range from 0.59% R-r in the SW to 0.77% R-r in the NE, predicted maximum palaeo-temperatures ranging from similar to 85 degrees C to -135 degrees C, respectively, these were attained soon after sediment deposition. A coalification grade of about 0.40-0.50% R-r characteristic of sub-bituminous coals, was already completed during the late Carboniferous and/or early Permian limes. Later post-Permian heating did not have any substantial impact on the maturation of Carboniferous organic matter. By combining VR thermal modelling with local stratigraphic information we provide evidence that the coalification process occurred very rapidly. A coalification grade of similar to 0.40% R-r was attained during 2-4 m.y. after peat deposition, or even earlier. In addition, abundant sub-bituminous coal clasts embedded within the Carboniferous strata suggest that coalification proceeded close to the surface. These data collectively imply extremely high thermal gradients that must have prevailed during the Permo-Carboniferous thermal climax. The syn-sedimentary volcanic and/or igneous activity combined with effects of heat advection due to hot fluids circulating through the strata could have accounted for this dramatic geothermal setting, which had vanished by the end of the Palaeozoic Era.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10406 - Analytical chemistry

Project

<a href="/en/project/EF16_019%2F0000728" target="_blank" >EF16_019/0000728: Ultra-trace isotope research in social and environmental studies using accelerator mass spectrometry</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

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

Name of the periodical

Bulletin of Geosciences

ISSN

1214-1119

e-ISSN

—

Volume of the periodical

94

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

19

Pages from-to

201-219

UT code for WoS article

000471678400005

EID of the result in the Scopus database

2-s2.0-85071151715