Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

Moon impact left sea of molten rock 6 miles deep

RATE THIS! +8
Posted in Science on 13th Mar, 2013 10:50 PM by AlexMuller

A new analysis of data from NASA’s Lunar Orbiter Laser Altimeter (LOLA) shows that the 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. Similar seas of impact melt were probably present at various times in at least 30 other large impact basins on the Moon.


As these melt seas cooled, they differentiated in a way that was similar to the lunar magma ocean. As a result, rocks formed in melt seas could be mistaken for “pristine” rocks formed very early in the Moon’s history, researchers say.


“This work adds the concept of impact melt magma seas to the lexicon of lunar rock-forming processes,” says planetary geologist James W. Head III, professor of geological sciences at Brown University and the senior researcher involved in the study. “It emphasizes that one must consider the detailed point of origin of the rocks in order to interpret them correctly.”


That includes rocks brought back during the Apollo program and Russia’s Luna missions. It’s quite possible, the researchers say, that impact melt material is present in lunar samples thought to be representative of the early formation of the lunar crust.


The amount of rock formed in melt seas is far from trivial. Vaughan and his colleagues estimate that impacts forming the Moon’s 30 large basins produced 100 million cubic kilometers of melt, enough to make up 5 percent of the Moon’s crust.
If lunar samples do include melt material, it would help to explain some puzzling findings from lunar samples. For example, in 2011 an analysis of a sample assumed to have originated in the early lunar crust suggested that the sample was 200 million years younger than the estimated time when the lunar magma ocean solidified.


That led some researchers to conclude either that the Moon is younger than previously estimated or that the lunar magma ocean theory was flawed. But if that sample actually originated from a melt sea, its young age could be explained without rewriting the history of the Moon.



Read original article » Back to category

Comments

Author: Guest
Posted: 2013-10-25
+0
kiQu9G I really liked your blog.Really looking forward to read more. Fantastic. Reply


 

Recent headlines

  • Posted in Business on 2017-03-28 14:55:07
    Bots shift towards AI and garner $24 billion of investment..read more
    Posted in Science on 2017-03-28 14:45:33
    Musk launches company to pursue 'neural lace'.....read more
    Posted in Science on 2017-03-28 14:29:14
    No one knows what to do with the International Space Station..read more
    Posted in Business on 2017-03-27 19:48:26
    Tech world debate on robots and jobs heats up..read more
    Posted in Science on 2017-03-27 19:37:58
    Chemical energy storage with water heating solar panels.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Intensive medical treatment can reverse type 2 diabetes..read more
    Posted by AlexMuller
    Daily consumption of tea protects the elderly from cognitive.....read more
    Posted by AlexMuller
    New analysis method of metabolites accurately predicts whether.....read more
    Posted by AlexMuller
    Unproven stem cell 'therapy' blinds three patients at Florida.....read more
    Posted by AlexMuller
    Indigenous South American group has healthiest arteries of all.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me