Mars' mysterious dark regions 'dominantly composed of glass'

   Apr 16, 3:37 pm

Washington, April 16 (ANI): The surface of Mars comprised a number of lava flows and other signs of effusive volcanism.

Although models suggest that explosive volcanism should also have produced extensive deposits, direct evidence for large-scale explosive volcanism on Mars has been scarce.

A new investigation by Briony Horgan and James F. Bell III of the mineralogy of dark regions covering more than ten million square kilometers in the northern hemisphere of Mars has revealed that these regions are dominantly composed of glass.

The glass is most likely volcanic glass produced during explosive eruptions, and potential sources include volcano-ice interactions in the northern lowlands as well as ash deposits from the large martian shield volcanoes.

The glass deposits also exhibit signs of weathering, indicating widespread interactions with liquid water.

Under the hyper-arid climatic conditions Mars has experienced over the past three billion years or more, the most likely source of this water is melting ice or snow.

These results suggest that explosive volcanism may be a major source of sediments on Mars, and that limited liquid water has been present at the surface of Mars even under long-term hyper-arid conditions. (ANI)

Why is Planet Nine so far from us? May 4, 11:32 am
Washington D.C, May 4 (ANI): Evidence thus far may be pointing to the existence of Planet Nine, a Neptune-mass planet in an elliptical orbit 10 times farther from our Sun than Pluto, but the question as to how it ended up in such a distant orbit has baffled theorists.
Full Story
ExoMars 2016 interplanetary mission launched May 3, 11:53 am
New Delhi, May 3 (ANI): The Roscosmos State Corporation and the European Space Agency (ESA) have launched the jointly-developed ExoMars 2016 interplanetary mission, comprising the Trace Gas Orbiter (TGO) and the Schiaparelli lander, on a Proton rocket from Baikonur, thus marking the first phase in the European-Russian ExoMars cooperation programme.
Full Story
`Tailless` comet from Earth's distant past has returned Apr 30, 12:53 pm
Washington D.C, Apr 30 (ANI): According to a recent study, a unique fragment from Earth's formation has returned after billions of years in cold storage.
Full Story
Most detailed pics of Mars` surface unveiled Apr 27, 1:48 pm
Washington D.C, Apr 27 (ANI): A team of researchers has detailed the surface of Mars, including the location of Beagle-2.
Full Story
Comments