KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates

Go down

KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates Empty KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates

Post by Guest on Mon Feb 23, 2015 6:36 am

Scientists have long known that the Earth's crust consists of at least 15 tectonic plates--continent-sized slabs of rock on the surface of the Earth that shift about to create mountains, volcanoes, and earthquake zones. But the exact mechanism by which the plates move has remained a mystery.
Until now.
A new study suggests that the plates glide about on a six-mile-thick hidden channel of "soft" rock located between the base of the plates and the upper portion of the Earth's mantle (the layer of molten rock above the planet's core), Live Science reported.
“The idea that Earth’s surface consists of a mosaic of moving plates is a well-established scientific paradigm, but it had never been clear about what actually moves the plates around," study co-author Dr. Tim Stern, a professor of geography, environment and earth sciences at Victoria University of Wellington in New Zealand, said in a written statement. “To work this out requires an understanding of what happens at the bottom of a tectonic plate."
(Story continues below image.)
KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates O-TECTONIC-PLATES-570
This map shows 15 of the largest plates.
To glimpse the underbelly of a tectonic plate, the researchers used dynamite explosions to generate seismic waves across the southern part of New Zealand's North Island, which sits above the so-called Pacific Plate. The researchers mapped the waves as they traveled through the plate and then used the data to create what Stern called "the most detailed image yet of an oceanic tectonic plate."
The data showed that the seismic waves slowed abruptly at the base of the plate--which suggests that they must have hit a hidden layer of jelly-like rock, Cosmos magazine reported.
The researchers hypothesize that the soft rock creates a slippery base upon which plates drift when they are pushed or pulled--though exactly what is doing the pushing or pulling is still up for debate.
According to Cosmos magazine, some scientists think that extruding magma or slowly creeping convection currents may push the plates apart. Others think that as a thick, heavy plate dives beneath a thinner plate, it pulls on the plate behind it--and the jelly-like rock found at the base of a tectonic plate may lend support to the pulling theory.
“Understanding this boundary between the base of cold, rigid tectonic plates and the underlying hot, convecting mantle underneath is central to our knowledge of plate tectonics and the very formation and evolution of our planet," Stern said in the statement.
The study was published online Feb. 5, 2015 in the journal Nature.


http://www.huffingtonpost.com/2015/02/20/tectonic-plates-move_n_6713638.html?utm_hp_ref=uk&ir=UK

Guest
Guest


Back to top Go down

KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates Empty Re: KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates

Post by veya_victaous on Tue Feb 24, 2015 4:31 am

KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates Must-see-imagery-chicken-continents

_________________
My job is to travel the world delivering Chaos and Candy.

We don't know the Questions... does that means we cannot seek the Answers?
veya_victaous
veya_victaous
The Mod Loki, Minister of Chaos & Candy, Emperor of the Southern Realms, Captain Kangaroo

Posts : 19095
Join date : 2013-01-23
Age : 36
Location : Australia

View user profile

Back to top Go down

KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates Empty Re: KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates

Post by Ben Reilly on Tue Feb 24, 2015 6:50 am

Everybody knows that the continents move around according to the mood of Jeebus Christ, son of the all-mighty Gawd. I wish science would stop wasting time and tax money on questions the Bahbble has already answered, praise Bush. Donchallno the koalas got to whatever Gawd-foresaken hellhole they live in now 'cause of Jeebus?

_________________
It's so hard to be without you / used to feel so angry, now I only feel humble.

- Ryan Adams
Ben Reilly
Ben Reilly
Cowboy King. Dread Pirate of the Guadalupe. Enemy of the American people.

Posts : 27281
Join date : 2013-01-19
Age : 44
Location : Tesco's

View user profile http://www.newsfixboard.com

Back to top Go down

KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates Empty Re: KA-BOOM! Scientists Solve Mystery Of Earth's Tectonic Plates

Post by stardesk on Tue Feb 24, 2015 12:10 pm

Ben_Reilly wrote:Everybody knows that the continents move around according to the mood of Jeebus Christ, son of the all-mighty Gawd. I wish science would stop wasting time and tax money on questions the Bahbble has already answered, praise Bush. Donchallno the koalas got to whatever Gawd-foresaken hellhole they live in now 'cause of Jeebus?

LOL, oh come on Ben, didn't you know it's all Satan's fault. So A Jehovah's Witness told me. Shocked Twisted Evil When he told me that I nearly peed myself laughing.

_________________
Theodosius Dobzhansky: 'Nothing in biology makes sense except in the light of evolution.'
stardesk
stardesk

Posts : 948
Join date : 2013-12-13

View user profile

Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum