Explained the unexpected benefits of falling asteroids on Earth


Explained the unexpected benefits of falling asteroids on Earth
The fall of the asteroids on Earth during the formation of the planet caused the current appearance of the planet, the crust and continents. This conclusion was made by an international group of scientists from South Africa, Canada and Finland. Article scientists published in the journal Nature Communication.

A few billion years ago, in katharheas, the Earth was subjected to intense bombardment by comets and asteroids, which caused the appearance of large areas of molten basalt rocks. The thickness of such melts could reach tens of kilometers, and the diameter – thousands of kilometers. One of these sites is the Sudbury Magmatic Complex in Canada, which was formed about 1.85 billion years ago. When an asteroid hit, a layer of melt with a thickness of five kilometers, heated to 1.7-2 thousand degrees Celsius, appeared. At present, the complex is composed of layers of such igneous rocks as gabbro, norite, diorite, and granofir. It is believed that the layers arose as a result of magmatic differentiation, in which rocks of different chemical composition are formed from magma. However, so far this hypothesis has not been confirmed.

According to alternative hypotheses, magmatic melt differentiation in Sudbury is impossible. The impact of the asteroid in this case does not contribute to good mixing (homogenization) of molten rocks, and differentiation occurs even before the onset of crystallization, just as immiscible liquids are separated. According to scientists, if this is true, then we will have to admit that the formation of craters on rocky planets, including the Earth, does not make any contribution to the evolution of the crust.

In the new work, scientists reported the discovery of large inclusions of melanorites in the Sudbury complex, ranging in diameter from ten to one hundred meters. The research results showed that they originate from a rock that was initially formed in the melt from top to bottom, but then collapsed due to tectonic processes. In addition, melanorites simultaneously grew in the upward direction from the base of the complex, which indicates that the melt was initially homogeneous, which means that there was a magmatic differentiation in it. Similar processes took place in more ancient melts on the Earth, the Moon and other planets.

According to scientists, the results of the study show that the strikes of asteroids made the crust rich in silica. This allows you to revise the traditional scientific ideas, according to which the rocks with silicon dioxide, of which the continents are now composed, could be formed only in the bowels of the Earth.

Comments

  1. Yes! Finally someone writes about Top SHelf Bread.

    ReplyDelete
  2. no deposit casino
    online card games
    slots casino
    russian roulette game
    how to play blackjack

    ReplyDelete
  3. russian roulette game
    slots for real money free no deposit
    247 blackjack
    no deposit casino
    adult card games

    ReplyDelete
  4. Hurrah, that's what I was searching for, what
    a stuff! existing here at this website, thanks admin of this site.

    ReplyDelete
  5. Having read this I thought it was rather enlightening.
    I appreciate you spending some time and energy to put
    this short article together. I once again find myself personally spending a lot of time both reading and commenting.
    But so what, it was still worth it!

    ReplyDelete
  6. Wow, this piece of writing is nice, my sister is analyzing these things,
    so I am going to tell her.

    ReplyDelete
  7. I am continually invstigating online for tips that
    can aid me. Thanks!

    ReplyDelete
  8. It is appropriate time to make some plans for the long run and
    it's time to be happy. I have learn this publish and if I may just
    I want to recommend you some attention-grabbing issues
    or suggestions. Maybe you can write next articles relating to this article.
    I wish to read more things about it!

    ReplyDelete
  9. I have been reading out a few of your posts and i must say pretty good stuff.
    I will definitely bookmark your website.

    ReplyDelete
  10. I was just searching for this info for a while. After six hours of continuous Googleing,
    at last I got it in your web site. I wonder what is the lack of Google strategy that do not rank this type of informative sites in top of the list.

    Usually the top websites are full of garbage.

    ReplyDelete
  11. I just couldn't go away your web site prior to suggesting that I really loved the
    standard information an individual supply
    to your visitors? Is going to be back regularly in order to check out new posts.

    ReplyDelete
  12. Simply wish to say your article is as surprising. The clearness in your post is just cool and i can assume you are
    an expert on this subject. Fine with your permission allow me to grab your
    feed to keep updated with forthcoming post.

    Thanks a million and please keep up the enjoyable work.

    ReplyDelete
  13. Thanks , I have recently been searching for info about this subject for ages and yours
    is the greatest I've found out till now. But, what in regards to the conclusion? Are you
    certain in regards to the supply?

    ReplyDelete
  14. And the battle for the Iron Throne begins.

    ReplyDelete
  15. Hurrah, that’s whatever i needed, thats information! recent
    from that blog page, many thanks management of that web page.

    ReplyDelete
  16. What a material of un-ambiguity and preserveness of
    valuable knowledge about unpredicted emotions.

    ReplyDelete
  17. F*ckin' tremendous issues here. I am very satisfied to look your article.
    Thank you so much and i'm looking forward to touch you.
    Will you please drop me a e-mail?

    ReplyDelete
  18. I do consider all the ideas you have presented
    for your post. They are very convincing and will definitely work.
    Still, the posts are very brief for newbies. May you please lengthen them a little from next time?
    Thanks for the post.

    ReplyDelete

Post a Comment