| SLOBODNÍK, Marek, Rostislav MELICHAR, Vratislav HURAI a Ronald BAKKER. Litho-stratigraphic effect on Variscan fluid flow within the Prague synform, Barrandian: Evidence based on C, O, Sr isotopes and fluid inclusions. Marine and Petroleum Geology. Elsevier, 2012, roč. 35, č. 1, s. 128-138. ISSN 0264-8172. Dostupné z: https://dx.doi.org/10.1016/j.marpetgeo.2012.01.003. |
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@article{977502,
author = {Slobodník, Marek and Melichar, Rostislav and Hurai, Vratislav and Bakker, Ronald},
article_number = {1},
doi = {http://dx.doi.org/10.1016/j.marpetgeo.2012.01.003},
keywords = {Bohemian Massif; Palaeozoic; Variscan orogeny; veins; fluid inclusions; stable isotopes},
language = {eng},
issn = {0264-8172},
journal = {Marine and Petroleum Geology},
title = {Litho-stratigraphic effect on Variscan fluid flow within the Prague synform, Barrandian: Evidence based on C, O, Sr isotopes and fluid inclusions},
volume = {35},
year = {2012}
}
TY - JOUR
ID - 977502
AU - Slobodník, Marek - Melichar, Rostislav - Hurai, Vratislav - Bakker, Ronald
PY - 2012
TI - Litho-stratigraphic effect on Variscan fluid flow within the Prague synform, Barrandian: Evidence based on C, O, Sr isotopes and fluid inclusions
JF - Marine and Petroleum Geology
VL - 35
IS - 1
SP - 128-138
EP - 128-138
PB - Elsevier
SN - 02648172
KW - Bohemian Massif
KW - Palaeozoic
KW - Variscan orogeny
KW - veins
KW - fluid inclusions
KW - stable isotopes
N2 - The Palaeozoic sedimentary sequence of the Prague synform (Ordovician- Devonian) in the centre of the Bohemian massif underwent Variscan deformation and thermal overprint events. Variscan veins widespread throughout the sedimentary strata have precipitated from syntectonic aqueous and hydrocarbon-rich fluids. Homogenization temperatures of aqueous inclusions increased from 70 up to 226 degC in the Cambrian rocks underlying the Prague synform. Seawater, modified due to intensive water-rock interaction, was the main fluid component. Fluid flow was limited and restricted to the lithostratigraphic compartments forming a rock-buffered system. Stable isotopic modelling (C, O) and final interpretations of the confined hydrostratigraphic fluid migration was supported by the 87Sr/86Sr ratio in veins and wall rocks. Siliciclastic Cambrian and Ordovician rocks and the associated intersecting veins yielded similar isotopic signatures, and consequently the fluid migration is restricted to layer- and formation-scales. Gradually downwards increasing fluid temperature and compositional changes reflect burial at oil-window conditions. An open fluid system could be expected in proximity of major faults of the Prague syncline and at the top of the sedimentary sequence.
ER -
SLOBODNÍK, Marek, Rostislav MELICHAR, Vratislav HURAI a Ronald BAKKER. Litho-stratigraphic effect on Variscan fluid flow within the Prague synform, Barrandian: Evidence based on C, O, Sr isotopes and fluid inclusions. \textit{Marine and Petroleum Geology}. Elsevier, 2012, roč.~35, č.~1, s.~128-138. ISSN~0264-8172. Dostupné z: https://dx.doi.org/10.1016/j.marpetgeo.2012.01.003.
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