Jump to content



Photo

  • Please log in to reply
5 replies to this topic

#1 Crisp

Crisp

    To infinity and beyond

  • 5,529 posts
  • Joined: 06-May 10
  • Location: 127.0.0.1

Posted 25 February 2013 - 02:50

Lava ocean may have flowed on Mercury's surface billions of years ago

Posted Image
Image from BBC

A recent experiment conducted by MIT researchers has led some experts to believe an ocean of lava may have been flowing on Mercury's surface some four billion years ago. The finding came as scientists feverishly analyzed data from NASA's Messenger probe, which has given them some of the best insight into Mercury's composition. The presence of two vastly different types of rock on the planet was a curious discovery, and led the MIT team to create an experiment that would hopefully point to a geographical process responsible for the disparity. Researchers recreated the rocks in a lab and exposed both to a variety of temperatures and pressures. “You can tell what would happen as the melt cools and crystals form and change the chemical composition of the remaining melted rock," said Timothy Grove, a geology professor at MIT. “The leftover melt changes composition.”

Ultimately Grove and his associates concluded that the two rock compositions couldn't have come from the same region, leaving the so-called "lava ocean" as the only viable explanation. If magma did at one point cover some of Mercury's surface, it was a long time ago. “The crust is probably more than 4 billion years old, so this magma ocean is a really ancient feature," Grove said. Specifically, he estimates that the ocean would have been flowing sometime within the first one million to 10 million years of Mercury's existence.



Source


#2 compl3x

compl3x

    Space coyote

  • 8,799 posts
  • Joined: 06-December 09
  • Location: Melbourne, Australia
  • OS: Windows 7
  • Phone: Samsung Galaxy S4

Posted 25 February 2013 - 04:09

The floor really is lava!

#3 Growled

Growled

    Neowinian Senior

  • 41,508 posts
  • Joined: 17-December 08
  • Location: USA

Posted 26 February 2013 - 01:52

That was indeed a long time ago.

#4 Dot Matrix

Dot Matrix

    Neowinian Senior

  • 11,507 posts
  • Joined: 14-November 11
  • Location: Upstate New York
  • OS: Windows 8.1
  • Phone: Nokia Lumia 920

Posted 26 February 2013 - 01:57

Um. That's kinda a given.

#5 Javik

Javik

    #GamerGate

  • 6,062 posts
  • Joined: 21-May 12

Posted 26 February 2013 - 02:09

Given how hot Mercury is that wouldn't really shock me if true.

#6 1941

1941

    Banned

  • 18,175 posts
  • Joined: 17-July 06

Posted 26 February 2013 - 02:18

MIT is one of the best of it's kind in the world.