$1 Billion Mission To Reach the Earth's Mantle
black6host writes "Humans have reached the moon and are planning to return samples from Mars, but when it comes to exploring the land deep beneath our feet, we have only scratched the surface of our planet. This may be about to change with a $1 billion mission to drill 6 km (3.7 miles) beneath the seafloor to reach the Earth's mantle — a 3000 km-thick layer of slowly deforming rock between the crust and the core which makes up the majority of our planet — and bring back the first ever fresh samples."
Please remember to wear your heat suit when venturing outside the vessel.
If not us, who? If not now, when?
I wonder if by samples, they mean the live dinosaurs that inhabit hollow earth.
sudo make me a sandwich
Forgive my ignorance here but don't we already have this? What's wrong with using a volcano?
I know how this ends...with a giant sucking sound as the world's oceans drain into the earth's core. Then, as steam builds inside the planet, the earth turns into a giant exploding kernel of popcorn.
---Technology will liberate us if it doesn't enslave us first.
can i vote against this?
The problem with slashdot is that most of its users were bullied and stuffed into lockers as kids!
Lets hope the Earth crust is not a balloon...
Used to watch this on Saturday morning with "Superhost" http://www.youtube.com/watch?v=lHtZ6Ixeqvs
RELEASE THE MORLOCKS!
You want the truthiness? You can't handle the truthiness!
Everyone knows you're supposed to enter through the poles...
To get to the mantle scientists will be relying on a purpose-built Japanese deep-sea drilling vessel called Chikyu
Chikyu, meet Cthulhu. :p
The humans delved too greedily and too deep. You know what they awoke in the darkness of Khazad-dum... shadow and flame.
"Down there," said Golg, "I could show you real gold, real silver, real diamonds."
"Bosh!" said Jill rudely. "As if we didn't know that we're below the deepest mines even here."
"Yes," said Golg. "I have heard of those little scratches in the crust that you Topdwellers call mines. But
that's where you get dead gold, dead silver, dead gems. Down in Bism we have them alive and growing.
There I'll pick you bunches of rubies that you can eat and squeeze you a cup full of diamond-juice. You
won't care much about fingering the cold, dead treasures of your shallow mines after you have tasted the
live ones of Bism."
"My father went to the world's end," said Rilian thoughtfully. "It would be a marvellous thing if his son
went to the bottom of the world."
When you have nothing left to burn you must set yourself on fire
I did this once in dwarf fortress... Protip, it creates a lot of FUN.
I believe it's spelled: one BIIIIIIIILLION dollars...
Yeah, and it's showing a hell of a rash for it.
“He’s not deformed, he’s just drunk!”
Don't they remember the Inhumanoids; the evil that lies within?
I swear to God...I swear to God! That is NOT how you treat your human!
The pressure below is so high that the creep of rock may fill back the hole as it is drilled.
Do they plan to reinforce the hole wall ?
With which material ? Even if they find one, this will make the project a lot more complicated...
I know it isn't going to happen like this, but I cannot help but think of the flooded salt mine on Lake Peigneur. Some drillers miscalculated their location and drilled down, through a lake bed, into a nearby salt mine shaft. The lake was drained and temporarily reversed the flow of nearby rivers. Look it up on youtube... its kind of interesting to hear how a relatively small 14 inch drill bit can cause a disaster large enough to sink multiple barges and reverse rivers.
Geophysicist David Stevenson of Cal Tech proposes we make a probe that rides a molten mass of iron, 10,000 cubic meters of it poured into a fissue 0.1 meter wide x 300 long x 300 meter deep, all the way to the center of the earth.
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CB8QFjAA&url=http%3A%2F%2Fcampanian.iodp.org%2FMantleFrontier%2F12_Ojovan%2520-%2520Self_Sinking_Capsules_-_Ojovan.pdf&ei=egNrUMiMKuOeywH48YFw&usg=AFQjCNF3htj3aVkXi4Ln7xttNgFiL4TW5A&sig2=-xgVnfbwNGwtVNN6w7s_ZQ
The real problem is the mud. So to more or less balance pressure at the bottom of the hole, you need the drilling mud to be so heavy that I really donno how to make it. Hmm a lubricating coolant with the density of aluminum that can be pumped around at sea level on the surface like water... Oh and it has to be stable around 600 degrees F (which is why they gave up on Kola). So anything other than asphalt (including teflon) will be vapor.... its just a mess.
Another fun limitation is if the bottom pressure is 10000 psi (made up) the pressure half way up is 5000 psi now can your cemented in holes survive that?
You know those engineering puzzles like from statics/dynamics class "how tall of a cylindrical flagpole can you make out of concrete / steel / CF until it buckles" well my cousins in the Louisiana petrochem industry have puzzlers like "imagine an infinite budget and you wanna dig 10 miles straight down, now write an essay explaining all the technical limitations".
Someday the tech might change to something like a vertical tunnel boring machine. Maybe thats what they're going to try. That would certainly be very interesting.
"Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
We can finally reach the gooey jelly filling!
Any bets on what flavor it'll be?
I ated the orange jelly. It tastes like burning.
Recipe for a Planet
See also 'Project Mohole'