A geochemical traverse across the Eastern Carpathians (Romania): constraints on the origin and evolution of the mineral water and gas discharges

Vaselli, Orlando; Minissale, A.; Tassi, Franco; Magro, G.; Seghedi, Ioan; Ioane, Dumitru; Szakács, Alexandru

doi:10.1016/s0009-2541(01)00348-5

Cited by 71 publications

(80 citation statements)

References 34 publications

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“…The proximity of the volcanic range is characterized by persistent free gas emanations, dry CO 2 diffuse degassing, bubbling pools and mofettes, and occurrence of sparkling mineral water (Pricăjan, 1972;Vaselli et al 2002;Jánosi et al 2005;Kis and Baciu, 2013). Methane emissions are related to natural gas fields of the Transylvanian Basin.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

“…Althaus et al 2000;Vaselli et al 2002;Etiope et al 2004;Baciu et al 2007). The chemical composition of the dissolved gases extracted from the water samples shows the ubiquitous presence of CO 2 .…”

Section: -Chemistry Of Dissolved Gasesmentioning

confidence: 99%

“…Mountains are mainly volcanic (Althaus et al 2000;Vaselli et al 2002) while the south-eastern Transylvanian Basin is characterized by crustal-type helium associated to methane reservoirs (Etiope et al 2004;Baciu et al 2007). The highest He isotopic ratios of the area have been detected at the proximity of the volcanic arc, at Bálványos, where R/Ra values from 3.04 to 3.19…”

Section: -Helium Isotopesmentioning

confidence: 99%

“…Ra (Althaus et al 2000), 4.49, and 4.38 Ra (Vaselli et al 2002) were measured. The lowest ratios have been detected in bubbling gases from the Transylvanian Basin, at Sărmășel, with values of 0.02 Ra (Baciu et al 2007).…”

Section: -Helium Isotopesmentioning

confidence: 99%

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Geochemistry of dissolved gases from the Eastern Carpathians - Transylvanian Basin boundary

et al. 2017

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We show the results of a study on the volatiles dissolved in mineral waters discharged over a 200 km-long transect along the Rodna-Bârgău area and Călimani-Gurghiu-Harghita volcanic chain (Eastern Carpathians, Romania terms of mixings among different gas sources feeding the groundwater and the contemporary occurrence of gaswater interactions like degassing and deposition of carbonates, affecting the circulating waters after their infiltration.

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Section: -Chemistry Of Dissolved Gasesmentioning

confidence: 99%

Section: -Helium Isotopesmentioning

confidence: 99%

Section: -Helium Isotopesmentioning

confidence: 99%

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Geochemistry of dissolved gases from the Eastern Carpathians - Transylvanian Basin boundary

et al. 2017

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“…Among the multitude of groundwater outlets sampled by Vaselli et al (2002) within that thrust belt area, it was only at Slȃnic Moldova that a considerable amount of mantle-derived 3 He could be detected in gas samples, which were associated with discharges of saline fluids. The latter were presumably carried to the surface via deep (regional) faults, an inference additionally supported by the D and O 18 isotopes concentrations and by Na-K-Mg geothermometry diagnoses (Vaselli et al, 2002).…”

Section: Vrancea Seismic Regionmentioning

confidence: 99%

Persistent pre-seismic signature detected by means of Na-K-Mg geothermometry records in a saline spring of Vrancea area (Romania)

Mitrofan

Marin

Zugravescu

et al. 2010

Nat. Hazards Earth Syst. Sci.

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Abstract.A six year-long hydrochemical monitoring operation was conducted in Vrancea seismic zone (Romania), addressing a saline spring that proved to be suitable for Na-K-Mg geothermometry diagnosis. During the considered time-interval (2003)(2004)(2005)(2006)(2007)(2008)(2009), only one important earthquake (m b =5.8) occurred in Vrancea region, this circumstance providing an unambiguous reference-moment between preseismic and post-seismic periods. On occurrence of that earthquake, an anomalous fluctuation of the Na-K temperature was detected -a result largely similar to previous ones recorded worldwide (California, southwest Egypt, northeast India). Yet such fluctuations may not necessarily be induced by earthquake-associated processes: they can occur also "routinely", possibly reflecting some environmental, meteorologically-induced "noise". It was therefore important to examine whether the variations observed in the data values could be plausibly related to a seismogenesis process. By additionally investigating (in a "scattterplot" diagram) the correlation between the Na-K temperatures and the values of a so-called "maturity index", a specific pattern emerged, with pre-seismic data-points plotting in a distinct domain of the diagram; moreover, those data-points appeared to describe a "drift away" pathway with respect to the remaining data-points "cluster", recorded during the subsequent 4 years of post-seismic monitoring. The "drift away" pattern persistently evolved for at least 18 months, ending just before the m b =5.8 earthquake and consequently suggesting the existence of some kind of long-term precursory phenomenon.

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Hydrological Characters

Mahala¹

2018

Geology, Chemistry and Genesis of Thermal Springs of Odisha, India

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A geochemical traverse across the Eastern Carpathians (Romania): constraints on the origin and evolution of the mineral water and gas discharges

Cited by 71 publications

References 34 publications

Geochemistry of dissolved gases from the Eastern Carpathians - Transylvanian Basin boundary

Geochemistry of dissolved gases from the Eastern Carpathians - Transylvanian Basin boundary

Persistent pre-seismic signature detected by means of Na-K-Mg geothermometry records in a saline spring of Vrancea area (Romania)

Hydrological Characters

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