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)

Rapidly aging 'weird' 'Nasty 1' star behaving in never-before-seen ways May 22, 12:18 pm
Washington, May 22 (ANI): A team of astronomers has uncovered surprising new clues about a hefty, rapidly aging star whose behavior has never been seen before in our Milky Way galaxy.
Full Story
Universe's brightest galaxy shining like 300 trillion suns discovered May 22, 11:54 am
Washington, May 22 (ANI): A remote galaxy shining with the light of more than 300 trillion suns has been discovered using data from NASA's Wide-field Infrared Survey Explorer (WISE).
Full Story
Here's what 'greedy' galaxy likes to snack on May 21, 1:31 pm
Washington, May 21 (ANI): A new research has revealed the snacking habits of a "greedy" galaxy after it was caught gobbling on its neighbours and leaving crumbs of evidence about its dietary past.
Full Story
'Shocking' things happen when supernova collides with nearby star May 21, 12:42 pm
Washington, May 21 (ANI): A team of astronomers has witnessed a supernova smashing into a nearby star, shocking it, and creating an ultraviolet glow that reveals the size of the companion.
Full Story
Comments

LATEST STORIES
TOP VIDEO STORIES
PHOTO GALLERY