Boglárka Mercedesz Kis

Babeș-Bolyai University | UBB · Department of Geology

Pululahua is a potentially active andesite and dacite lava dome complex. This paper presents the results of a survey focused on carbon dioxide (CO2) diffuse degassing at Pululahua, which was conducted during the 2017 International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) Commission of the Chemistry of Volcanic Gases...

The Multi-GAS, a robust and low-cost instrument for real-time in-situ gas measurements, has previously been used mainly for compositional measurements of active volcanic plumes. Here we demonstrate novel use of a specially designed Multi-GAS instrument adapted to low temperature degassing areas. We performed compositional measurements in the Easter...

The geologically young age of Ciomadul is not only highlighted by the presence of intact volcanic landforms (such as crater lakes), but also through the occurrence of sulphate minerals, gas emissions typically as mofettes, and mineral-rich water springs that occur around the volcano. This volcanic-related activity has played an important role to th...

Ciomadul is a long-dormant volcanic area in the Eastern Carpathians of Romania. The study site, the Stinky Cave, and the surrounding areas are well-known for CO2, and H2S seeps. The gases from these seeps come with high flux and are of magmatic origin, associated with the volcanic activity of Ciomadul. In this study, an Uncrewed Aerial Vehicle coup...

Noble gas isotopic composition of fluid inclusions was analyzed in amphibole, plagioclase and clinopyroxene phenocrysts from the shoshonitic and dacitic volcanic products of the Ciomadul volcanic dome field, the youngest volcanic system within the Carpathian-Pannonian Region. The highest Rc/RA ratios (3.0–3.8 RA) were obtained for high-mg clinopyro...

The Eastern Carpathians, along the Neogene to Quaternary volcanic chain, host important natural resources of mineral waters. Most of these are in the form of CO2-rich natural springs of different types, associated with CO2 gas emissions. In order to understand the origin of these waters, the natural processes responsible for the observed physical-c...

Ciomadul is the youngest volcano in the Carpathian‐Pannonian Region, Eastern‐Central Europe, which last erupted 30 ka. This volcano is considered to be inactive, however, combined evidence from petrologic and magnetotelluric data, as well as seismic tomography studies, suggests the existence of a subvolcanic crystal mush with variable melt content....

Sulfur Cave (Puturosu Mountain, Romania) is an extreme environment, unique for displaying life in a gas chemocline. The lower part of the cave is filled with CO2, CH4, and H2S of mofettic origin, while the upper part contains air that floats above the heavier volcanic gasses. S° and H2SO4 (from sulfur-oxidation) cover the cave wall at and below the...

Ciomadul volcano is the youngest volcano within the Carpathian-Pannonian Region. Its last eruption occurred 32 ka ago and resulted in the formation of St. Ana crater, that hosts a lake with a surface area of 22 ha, a maximum depth of ∼7 m and 12 m thick sediments. This volcanic area is characterized by intense cold gas emissions in the form of bubb...

Recent studies have revealed the qualitative and quantitative importance of the free gas emanations from aqueous environments and from soil surfaces in Romania. Interesting mixing zones of different gases can be observed on the boundary between the Miocene sedimentary deposits and Late Miocene volcaniclastics. This study presents the results of inv...

Seeps are the expression of the migration of hydrocarbons from subsurface accumulations to the surface in sedimentary basins. They may represent an important indication of the presence of petroleum (gas and oil) reservoirs and faults, and are a natural source of greenhouse gas (methane) and atmospheric pollutants (ethane, propane) to the atmosphere...

We provide the first high-resolution CO2 flux data for the Neogene to Quaternary volcanic regions of the entire Carpathian-Pannonian Region, Eastern-Central Europe, and estimate the CO2 emission of the seemingly inactive Ciomadul volcanic complex, the youngest volcano of this area. Our estimate includes data from focused and diffuse CO2 emissions f...

The paper presents the first systematic geochemical study on the content of natural gas (methane, heavier alkanes, CO2), and isotopic composition of methane dissolved in natural springs in Romania, from various tectonic and geological settings. The dissolved methane concentrations in the investigated areas range between 0.08 and 16,359 μg/L. Based...

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). All of the collected mineral water samples carry dissolved gas with carbon dioxide content up to 1.99 cm³STP/gH2O, and helium cont...

Abstract: The paper gives the results of an isotope investigation carried out on the waters of the crater-lake, Lake Saint Ana (Sf. Ana), of the Ciomadul Mountain, which is located in the Harghita Mountains of the East Carpathians in Romania. The main purpose of this study was to ivestigate the isotope signature of the lake water. The collected wat...

The Ciomadul, located in the South Harghita Mountains (Eastern Carpathians, Romania) is the youngest volcano built by the Neogene volcanism in the Carpathian-Pannonian Region. The volcanic activity was characterized by an initial extrusive lava dome building period from about 200 ka to 100 ka followed by a more explosive eruption stage from 57 to 3...

Methane flux measurements from surface gas manifestations and springs at the Ciomadu post-volcanic area are reported. These data contribute to extend the Romanian data-set on geological emissions of greenhouse gas to the atmosphere. A total of 46 sites were investigated for methane flux, dissolved methane content and stable carbon isotopic ratio of...

The study of mineral waters from the Eastern Carpathians dates back to the early 17 th century, when the first geological and chemical descriptions appeared. Since then a number of synthesizing studies appeared on the topic of provenance, geochemistry and medical effect of the mineral water springs and spas. Starting from the 20 th Century, as a re...

The Eastern Carpathians are renowned for their mineral water resources, exploited since historical times for their therapeutic value. This paper summarizes the present state of knowledge on the chemical type of mineral waters from the point of view of dissolved constituents and associated gases, such as CO2, CH4 or H2S. The chemistry of mineral wat...

The Eastern Carpathians, along the Rodna-Bârg8ului subvolcanic area and C8limani-Gurghiu-Harghita volcanic chain, with the Transylvanian Basin boundary, host important resources of Romanian CO 2-rich mineral waters. Results of a comprehensive study on the volatiles dissolved in artesian thermal waters discharged over a 200 km-long transect show lar...

The Eastern Carpathians are renowned for their mineral water resources, exploited since long time for their therapeutic value. In the present paper we summarize the chemical findings of a research carried out on 104 mineral water spring in the Eastern Carpathians. Two major types of waters (Ca-Na-HCO3 and Na-Cl) were identified based on the analysi...

There is a worldwide interest on geothermal, mineral and groundwater as a resource for energy, drinking water supply and therapeutic needs. The increasing trend in replacing tap water with commercial bottled mineral water for drinking purposes has become an economic, hydrogeologic and medical concern in the last decades. Several investigations have...

In Romania important resources of sparkling mineral waters are related to the Neogene magmatic activity in the Eastern Carpathians. These mineral water springs are located on the eastern and western slopes of the Neogene to Quaternary volcanic chain. Based on a survey carried out in the Rodna-Bârg ului, C limani-Gurghiu-Harghita Mountains, and on t...

The Eastern Carpathians are renowned for their mineral water resources, exploited since historical times for their therapeutic value. This paper summarizes the present state of knowledge on the chemical type of mineral waters from the point of view of dissolved constituents and associated gases, such as CO2, CH4 or H2S. The chemistry of mineral wat...

The study area, located at the contact zone between the Harghita Mountains and the Transylvanian Basin is well known for the abundance and diversity of mineral water springs. These mineral waters are used by the local people for drinking and also as Spas. This paper focuses on the mineral waters of some traditional Spas from this area, Odorheiu Sec...