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Progress in Earth and Planetary Science
Fig. 2 | Progress in Earth and Planetary Science

Fig. 2

From: Evidence for natural molecular hydrogen seepage associated with Carolina bays (surficial, ovoid depressions on the Atlantic Coastal Plain, Province of the USA)

Fig. 2

Subsoil H2 concentration measurements at Arthur Road Bay and Arthur Road Sandpit (lower image). Dashed lines outline the bays. Upper image is a LiDAR image showing the relief of the lower image. Profile lines follow ditches (dark lines in the lower photograph). Date of measurements 14 March 2012. LiDAR image is from the site cintos.org

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