mud volcano

American  

noun

1. a vent in the earth's surface through which escaping gas and vapor issue, causing mud to boil and occasionally to overflow, forming a conical mound around the vent.

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mud volcano British  

noun

1. a cone-shaped mound formed from fine mud ejected, with gases and water, from hot springs, geysers, etc, in volcanic regions

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Etymology

Origin of mud volcano

First recorded in 1810–20

Example Sentences

My Google Earth mud volcano map of Azerbaijan gives you and idea of just how ludicrously many mud volcanoes there are both onshore and offshore.

From BBC

While it is unclear how a mud volcano can catch fire naturally, one theory is that it might happen when a mixture of flammable gasses is ignited by sparks from rocks colliding together.

From BBC

"The mud volcanoes in Azerbaijan are some of the biggest and most violent in the world. There are, on average, several large mud volcano eruptions each year, and many of them can have big fires," Dr Mark Tingay, a geophysicist at the University of Adelaide, wrote on Twitter.

From BBC

The blast, which erupted in an area full of oil and gas fields on Sunday, was caused by a mud volcano, the government says.

From BBC

It said the fire had been caused by a mud volcano, which spews both mud and flammable gases.

From BBC