EGU21-13506
https://doi.org/10.5194/egusphere-egu21-13506
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Geochemistry of gas emissions in the volcano-tectonic environment of the Eastern Carpathians

Boglarka-Mercedesz Kis1,5, Laszlo Palcsu2, Andreea-Rebeka Zsigmond3, Dan Mircea Tamas1, Istvan Szollosi4, Roland Szalay1, and Szabolcs Harangi5
Boglarka-Mercedesz Kis et al.
  • 1Babes-Bolyai University, Faculty of Biology and Geology, Department of Geology, Cluj-Napoca, Romania (kisboglarka85@gmail.com, danmircea.tamas@gmail.com, szalay.j.roland@gmail.com)
  • 2Isotope Climatology and Environmental Research Centre (ICER), Hungarian Academy of Sciences (ATOMKI), Debrecen, Hungary (palcsu.laszlo@atomki.mta.hu)
  • 3Sapientia Hungarian University of Transylvania, Faculty of Sciences and Arts, Department of Environmental Science (zsigmond.andrea@gmail.com)
  • 4Babes-Bolyai University, Faculty of Mathematics and Computer Science, Cluj-Napoca, Romania (szollosi@gmail.com)
  • 5Eötvös University, Institute of Geography and Earth Sciences, MTA-ELTE Volcanology Research Group, Department of Petrology and Geochemistry, Budapest, Hungary (szabolcsharangi@gmail.com)

The Eastern Carpathians are characterized by intense gas emissions starting from the Neogene to Quaternary volcanic structures, especially the youngest dormant volcano, Ciomadul, but occurring also far away from these, in the Cretaceous flysch units. This is the most intensive degassing area from Romania. The gas emissions appear in different forms: dry gas, named mofettes and bubbling gas when they are accompanied by groundwater. The major components of these gas emissions are: CO2, CH4, N2 and sometimes H2S. Recent studies reveal a magmatic contribution up to 60% in these emissions (Vaselli et al., 2002, Kis et al., 2019). Gases are also present dissolved in groundwater and transported to the surface by CO2-rich springs. Besides these visible emissions, the gases come to the surface as diffuse degassing from the soil. We started a systematic geochemical investigation of the gas emissions in the volcano-tectonic environment of the southern part of the Eastern Carpathians, together with a 5-year monitoring of the gas emissions. Our primary aims are to constrain the flux of CO2, the origin of the different gas species, their interaction, and their relationship with the geodynamic background. Our findings could be integrated to the global carbon estimations, currently missing from the worldwide evaluations and could help the establishment of a long-term monitoring system of the gases in the area.

This work was supported by a grant of the Romanian Ministry of Education and Research, CNCS - UEFISCDI, project number PN-III-P1-1.1-TE-2019-1908, within PNCDI III and the project GTC 32144 supported by Babes-Bolyai University, Romania.

How to cite: Kis, B.-M., Palcsu, L., Zsigmond, A.-R., Tamas, D. M., Szollosi, I., Szalay, R., and Harangi, S.: Geochemistry of gas emissions in the volcano-tectonic environment of the Eastern Carpathians, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-13506, https://doi.org/10.5194/egusphere-egu21-13506, 2021.

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