facebook
twitter
rss
account
search
search
 

Scientists describe 'melting' of the moon

March 12, 2013 at 4:30 PM   |   Comments

PROVIDENCE, R.I., March 12 (UPI) -- Spacecraft data suggests molten rock may have been present on the moon more recently and persisted for longer periods than previously thought, NASA says.

An ocean of molten rock covered the moon's entire surface early in its history, which then cooled over millions of years, but a new analysis suggests it wasn't the last time the Moon's surface was melted on a massive scale, planetary scientists from Brown University said.

Data from NASA's Lunar Orbiter Laser Altimeter shows an impact event that formed the Orientale basin on the Moon's western edge and far side produced a sea of melted rock 220 miles across and at least six miles deep, they said.

Similar seas of impact melt were probably present at various times in at least 30 other large impact basins on the moon, and the amount of rock formed in melt seas is far from trivial, researchers said.

Brown graduate student William Vaughan and his colleagues said they estimate impacts forming the Moon's 30 large basins produced almost 240,000 cubic miles of melt, enough to make up 5 percent of the Moon's crust.

"This work adds the concept of impact melt magma seas to the lexicon of lunar rock-forming processes," Brown planetary geologist James W. Head III said.

Topics: James W.
© 2013 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Most Popular
1
Shellfish-inspired waterproof glue could help repair ships Shellfish-inspired waterproof glue could help repair ships
2
Iceland grows as Bardarbunga volcano continues to spew lava Iceland grows as Bardarbunga volcano continues to spew lava
3
Android phones to join iPhone in saying no to the police Android phones to join iPhone in saying no to the police
4
Pennsylvania officials issue $4.15 million fine to fracking company Pennsylvania officials issue $4.15 million fine to fracking company
5
Latest Ebola outbreak spreading much faster than in the past Latest Ebola outbreak spreading much faster than in the past
Trending News
Video
x
Feedback