Diagenetic source of fluids causing the hydrothermal alteration of teschenites in the Silesian Unit, Outer Western Carpathians, Czech Republic: Petroleum-bearing vein mineralization from the Stříbrník site

Dolníček, Zdeněk; Kropáč, Kamil; Janíčková, Kateřina; Urubek, Tomáš

doi:10.1016/j.marpetgeo.2012.06.004

Cited by 18 publications

(12 citation statements)

References 41 publications

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“…In addition, cementation of fissures and vesicles by hydrothermal minerals gave rise to abundant hydrothermal veins and amygdules. Recent studies (Dolníček et al 2010 a,b;Dolníček et al 2012;Urubek et al 2014;Kropáč et al 2015) revealed that multiple stages of hydrothermal activity occurred in this rock environment. The most important event was early post-magmatic alteration, which took place immediately after solidification of the host rock, when fluid circulation was allowed due to heat flow associated with the host intrusion (e.g., Dolníček et al 2010 a,b).…”

Section: Introductionmentioning

confidence: 92%

“…In the given setting, such wide variability in fluid salinity was very common during post-magmatic hydrothermal activity and cannot be explained by a single fluid source (cf. Dolníček et al 2010 a,b;Dolníček et al 2012;Urubek et al 2014). The available fluid inclusion data (cf.…”

Section: Genetic Modelmentioning

confidence: 99%

“…The most important event was early post-magmatic alteration, which took place immediately after solidification of the host rock, when fluid circulation was allowed due to heat flow associated with the host intrusion (e.g., Dolníček et al 2010 a,b). Later alteration events occurred during subsequent deeper burial (Dolníček et al 2012;Kropáč et al 2015) and thrusting during the Alpine Orogeny (Dolníček et al 2010 a;Urubek et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Genetic aspects of barite mineralization related to rocks of the teschenite association in the Silesian Unit, Outer Western Carpathians, Czech Republic

Jirásek¹,

Dolníček²,

Matýsek³

et al. 2017

Geologica Carpathica

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Abstract:Barite is a relatively uncommon phase in vein and amygdule mineralizations hosted by igneous rocks of the teschenite association in the Silesian Unit (Western Carpathians). In macroscopically observable sizes, it has been reported from 10 sites situated only in the Czech part of the Silesian Unit. Microscopic barite produced by the hydrothermal alteration of rock matrix and also by the supergene processes is more abundant. We examined four samples of barite by mineralogical and geochemical methods. Electron microprobe analyses proved pure barites with up to 0.038 apfu Sr and without remarkable internal zonation. Fluid inclusion and sulphur isotope data suggests that multiple sources of fluid components have been involved during barite crystallization. Barite contains primary and secondary aqueous all-liquid (L) or less frequent two-phase (L+V) aqueous fluid inclusions with variable salinity (0.4-2.9 wt. % NaCl eq.) and homogenization temperatures between 77 and 152 °C. The higher-salinity fluid endmember was probably Cretaceous seawater and the lower-salinity one was probably diagenetic water derived from surrounding flysch sediments during compaction and thermal alteration of clay minerals. The δ

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Section: Introductionmentioning

confidence: 92%

Section: Genetic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genetic aspects of barite mineralization related to rocks of the teschenite association in the Silesian Unit, Outer Western Carpathians, Czech Republic

Jirásek¹,

Dolníček²,

Matýsek³

et al. 2017

Geologica Carpathica

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“…Although the observed Th values do not correspond to high-temperature conditions, we potentially can not exclude a short-term activity of tectonically generated overheated fluids in this geological situation (cf. Dolníček et al 2012). Nevertheless the absence of a positive Yb anomaly (Yb/Yb*= 0.9) (Bau & Möller 1992) combined with the presence of a negative Ce-anomaly can indicate a lower temperature of the parent solution during precipitation of granular calcite from the V2 vein (Wood 1990;Bau & Möller 1992;Barker et al 2006).…”

Section: Trace Element Signature Of Hydrothermal Fluidmentioning

confidence: 99%

Genesis of Syntectonic Hydrothermal Veins in the Igneous Rock of Teschenite Association (Outer Western Carpathians, Czech Republic): Growth Mechanism and Origin of Fluids

Urubek¹,

Dolníček²,

Kropáč³

2015

Geologica Carpathica

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Hydrothermal mineralization hosted by the Lower Cretaceous igneous rock of the teschenite association at Jasenice (Silesian Unit, Flysch Belt, Outer Western Carpathians) occurs in two morphological types -irregular vein filled by granular calcite and regular composite vein formed by both fibrous and granular calcite and minor chlorite, quartz, and pyrite. Crosscutting evidence indicates that the granular veins are younger than the composite vein. The composite vein was formed by two mechanisms at different times. The arrangement of solid inclusions in the marginal fibrous zone suggests an episodic growth by the crack-seal mechanism during syntectonic deformation which was at least partially driven by tectonic suction pump during some stages of the Alpine Orogeny. Both the central part of the composite vein and monomineral veins developed in a brittle regime. In these cases, the textures of vein suggest the flow of fluids along an open fracture. The parent fluids of both types of vein are characterized by low temperatures (Th =66-163 °C), low salinities (0.4 to 3.4 wt. % NaCl eq.), low content of strong REE-complexing ligands, and δ 18 O and δ 13 C ranges of + 0.2/+12.5 ‰ SMOW and -11.8/-14.1 ‰ PDB, respectively. The parent fluids are interpreted as the results of mixing of residual seawater and diagenetic waters produced by dewatering of clay minerals in the associated flysch sediments. The flow of fluids was controlled by tectonic deformation of the host rock.

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“…In recent years, the fluid inclusion method has been widely used and has achieved good results (Zhao et al 2013;Guo et al 2012;Yang et al 2014;Xiao et al 2012Xiao et al , 2016Jiang et al 2015a, b, c;Liu et al 2007aLiu et al , b, 2013Gui et al 2015;Wu et al 2013;Wang et al 2015a, b). Fluid inclusions can provide valuable information on the reservoir pressure and temperature at the time of the fluid migration and entrapment as well as on the compositions of the fluids involved in diagenesis and may thus provide important insight into the mineral diagenesis and fluid dynamics within sedimentary basins (Dolníček et al 2012;Shan et al 2015;Wang et al 2015a, b;Guo et al 2014;Lü et al 2015;Li 2016). Fluid inclusion entrapment temperature in conjunction with burial and thermal history plots can be used to determine the petroleum charge history (Parnell 2010;Liu et al 2011;Pang et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Hydrocarbon charge history of the Paleogene reservoir in the northern Dongpu Depression, Bohai Bay Basin, China

Jiang

Fang²,

Liu

et al. 2016

Pet. Sci.

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The hydrocarbon charge history of the Paleogene in the northern Dongpu Depression was analyzed in detail based on a comprehensive analysis of the generation and expulsion history of the major hydrocarbon source rocks, fluorescence microscopic features and fluid inclusion petrography. There were two main stages of hydrocarbon generation and expulsion of oil from the major hydrocarbon source rocks. The first stage was the main hydrocarbon expulsion stage. The fluorescence microscopic features also indicated two stages of hydrocarbon accumulation. Carbonaceous bitumen, asphaltene bitumen and colloidal bitumen reflected an early hydrocarbon charge, whereas the oil bitumen reflected a second hydrocarbon charge. Hydrocarbon inclusions also indicate two distinct charges according to the diagenetic evolution sequence, inclusion petrography features combined with the homogenization temperature and reservoir burial history analysis. According to these comprehensive analysis results, the hydrocarbon charge history of the Paleogene reservoir in the northern Dongpu Depression was divided into two phases. The first phase was from the late Dongying depositional period of the Oligocene to the early uplift stages of the late Paleogene. The second phase was from the late Minghuazhen period of the Pliocene to the Quaternary. Reservoirs formed during the first period were widely distributed covering the entire area. In contrast, reservoirs formed during the second period were mainly distributed near the hydrocarbon generation sags. Vertically, it was characterized by a single phase in the upper layers and two phases in the lower layers of the Paleogene.

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Diagenetic source of fluids causing the hydrothermal alteration of teschenites in the Silesian Unit, Outer Western Carpathians, Czech Republic: Petroleum-bearing vein mineralization from the Stříbrník site

Cited by 18 publications

References 41 publications

Genetic aspects of barite mineralization related to rocks of the teschenite association in the Silesian Unit, Outer Western Carpathians, Czech Republic

Genetic aspects of barite mineralization related to rocks of the teschenite association in the Silesian Unit, Outer Western Carpathians, Czech Republic

Genesis of Syntectonic Hydrothermal Veins in the Igneous Rock of Teschenite Association (Outer Western Carpathians, Czech Republic): Growth Mechanism and Origin of Fluids

Hydrocarbon charge history of the Paleogene reservoir in the northern Dongpu Depression, Bohai Bay Basin, China

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