Discover and read the best of Twitter Threads about #volcanism
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Everything you want to know about the sedimentary volcanism (aka mud volcanism) on #Mars but were afraid to ask... disclaimer: this will be a very long thread after which you will never see the mud in the same light as before... 1/n
So let's start. There is a ongoing debate within martian community whether some flow-like and cone-like features on the surface of Mars resulted from igneous #volcanism or sedimentary volcanism. We are trying to find this out really hard, but this is not easy task. Why? 2/n 
The problem is that we know from #Earth that igneous volcanism can form features which look quite similar to sedimentary volcanoes. See for example these two images from Google Earth. Do you want to guess which one is a real volcano? If you want to be sure, what will you do? 3/n
1/11 Volcanic eruptions have occurred on planetary bodies throughout the Solar System, including Mercury. Eruptions have different styles, which affect the volcanoes they build. Photo by C.G. Newhall.
2/11 On volcanic planets, the size of volcanoes is anti-correlated with their frequency; small volcanoes are much more numerous than large ones (photo by John Pallister, USGS).
3/11 On Earth, small-volume explosive eruptions, which occur because expanding gas bubbles in the magma fragment the erupting molten rock, can form piles of material called scoria cones (photo by Drtrotsky CC-BY-SA3.0).
