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Mofettes

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Mofettes

 

the venting of carbon dioxide, with admixtures of water vapor and other gases, from small channels and fissures on the floor and sides of a volcano crater and on solidifying lava flows. The temperature is about 100°C. Mofettes occur during the last stage of the abatement of fumarole activity in volcanoes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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References in periodicals archive
l.) in NE Slovenia (Central Europe), within the area of Radenci Spa, which is famous for its springs of mineral water containing dissolved CO2 and for the occurrence of CO2 mofettes. The CO2, compressed in Miocene and Pliocene porous sediments under a pressure of 100 to 110 bars, results from post-volcanic activity (Titek, 1999).
The mofettes often release CO2 in fluctuating bursts and in similar locations in Slovenia, soil [CO2] has varied by as much as almost 30% (Vodnik et al., 2006; 2009).
The gas vent was a mofette, which presented as a small hole flooded by rain water, giving it a puddled appearance.
Response of Semi-natural Wet Meadow to Natural Geogenic CO2 Enrichment
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