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Fig. 2
![image](/articles/bsgf/full_html/2023/01/bsgf220025/bsgf220025-fig2.jpg)
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Map of the Asal–Ghoubbet rift showing major rift faults, geothermal wells, and surface H2 measurement points. The color scale from white to red indicates increasing H2 contents in fumaroles at the site. The red dot corresponds to site no. 4, presented in Figure 3.
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