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)

New dark mole pops up on Neptune's face Jun 24, 12:04 pm
Washington D.C, Jun 24 (ANI): Step aside Jupiter, now Neptune too has a spot! NASA's Hubble Space Telescope has found a brand-new mark on the surface of the farthest planet from the sun.
Full Story
'Electric Winds' responsible for Death of Venus Jun 24, 11:34 am
New Delhi, June 24 (ANI): Venus, ironically named after the goddess of love, is actually a planet body of fire and desolation, with rivers and seas long dead, and a scorched surface, now dry and acrid. But once, in a bygone age, Venus was much like Earth, a planet filled with the lifeblood of the cosmos, water.
Full Story
Universe crowded with black holes predicted Jun 23, 9:21 am
Washington D.C, Jun 23 (ANI): If a team of astronomers are right, then the future gravitational wave detectors are going to be busy as a beaver.
Full Story
Turns out, Pluto might really be hiding an ocean Jun 22, 11:30 am
Washington D.C, Jun 22 (ANI): There's long been speculation that Pluto might have a liquid ocean sloshing around under its icy crust, but now, a recent study has suggested that this might be true.
Full Story
Comments