δ 13 C, CO 2 ∕ 3 He and 3 He ∕ 4 He ratios reveal the presence of mantle gas in the CO 2 -rich groundwaters of the Ardennes massif (Spa, Belgium)
Although natural CO 2 -rich groundwaters of eastern Belgium have been known for centuries, the exact origin of their gas is still unclear. This paper presents the results of a sampling campaign in Belgium (Spa, Stoumont, Malmedy): 30 samples of both carbogaseous and non-carbogaseous groundwaters were analyzed for major elements, CO 2 content and carbon isotopic composition. Among them, 13 samples were also analyzed for 3 He / 4 He <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="46pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="9c8b2c5dfd0c647564f754850b5dfe5f"><... Mehr ...
| Verfasser: | |
|---|---|
| Dokumenttyp: | Artikel |
| Erscheinungsdatum: | 2022 |
| Reihe/Periodikum: | Hydrology and Earth System Sciences, Vol 26, Pp 2637-2648 (2022) |
| Verlag/Hrsg.: |
Copernicus Publications
|
| Schlagwörter: | Technology / T / Environmental technology. Sanitary engineering / TD1-1066 / Geography. Anthropology. Recreation / G / Environmental sciences / GE1-350 |
| Sprache: | Englisch |
| Permalink: | https://search.fid-benelux.de/Record/base-27391872 |
| Datenquelle: | BASE; Originalkatalog |
| Powered By: | BASE |
| Link(s) : | https://doi.org/10.5194/hess-26-2637-2022 |
Although natural CO 2 -rich groundwaters of eastern Belgium have been known for centuries, the exact origin of their gas is still unclear. This paper presents the results of a sampling campaign in Belgium (Spa, Stoumont, Malmedy): 30 samples of both carbogaseous and non-carbogaseous groundwaters were analyzed for major elements, CO 2 content and carbon isotopic composition. Among them, 13 samples were also analyzed for 3 He / 4 He <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="46pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="9c8b2c5dfd0c647564f754850b5dfe5f"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="hess-26-2637-2022-ie00007.svg" width="46pt" height="15pt" src="hess-26-2637-2022-ie00007.png"/></svg:svg> and 4 He / 20 Ne <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="50pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="877fe8fe08d544d09b18224d0748b4eb"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="hess-26-2637-2022-ie00008.svg" width="50pt" height="15pt" src="hess-26-2637-2022-ie00008.png"/></svg:svg> ratios. The combination of δ 13 C (between ca. −9 ‰ VPDB 1 and −2 ‰ VPDB), CO 2 / 3 He <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="48pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="f571d99770c11306333b27ed5ca30b11"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="hess-26-2637-2022-ie00009.svg" width="48pt" height="16pt" src="hess-26-2637-2022-ie00009.png"/></svg:svg> ratio (between 1.9×10 8 and 2.9×10 9 ) and 3 He / 4 He <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="46pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="5e8bb6b618862902b1a0e7bf75a65b08"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="hess-26-2637-2022-ie00010.svg" width="46pt" height="15pt" src="hess-26-2637-2022-ie00010.png"/></svg:svg> (between 0.92 and 2.70 Ra) shows with a high level of confidence that ...