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re: Team attempting to drill completely thru Earth's crust into mantle
Posted on 12/2/15 at 9:32 am to upgrayedd
Posted on 12/2/15 at 9:32 am to upgrayedd
quote:
The Mariana Trench?
OK, that's the lowest place on Earth, but still not where you want to drill.
You want to drill where the crust is the thinnest.
Where's that?
4
Posted on 12/2/15 at 9:32 am to bamarep
That was the plot of one of the old Doctor Who episodes from the 70's.
Things didn't end up very well for them.
Things didn't end up very well for them.
Posted on 12/2/15 at 9:32 am to soccerfüt
You are the worst.
Posted on 12/2/15 at 9:33 am to bamarep
When they drill into Hitler's Flying Saucer,he's gonna be pissed.
Posted on 12/2/15 at 9:33 am to thegreatboudini
quote:
Mariana trench
Yeah, but you'd have to drill from down there, which would be much more difficult than drilling from the surface. Which is why I'd choose the Dead Sea, which is the lowest point on the Earth's surface.
Posted on 12/2/15 at 9:34 am to fr33manator
quote:
Read an article a while back that there is a giant subterranean ocean under the crust
Posted on 12/2/15 at 9:34 am to thegreatboudini
quote:
Deepest part of the ocean or the arctic?
Because of the understanding of tectonic movement and that our core center cannot be sedimentary rock, therefore the beginnings of igneous?
I study sediments, not hard rock.
You should still know this!
Since people are having a tough time with these questions...
I'll help you out with the sediment size...crust is thinnest where it's new and has little sediment accumulated. Where's that?
And you've missed the point of the second question. I'll tell you that you can find pieces of the lower crust and mantle in tact on land.
Posted on 12/2/15 at 9:34 am to Pectus
tectonic zones? rift zones?
Posted on 12/2/15 at 9:35 am to Pectus
quote:mountains, baw
I'll tell you that you can find pieces of the lower crust and mantle in tact on land.
Posted on 12/2/15 at 9:35 am to kilo1234
quote:
Yeah, but you'd have to drill from down there, which would be much more difficult than drilling from the surface. Which is why I'd choose the Dead Sea, which is the lowest point on the Earth's surface.
Correct...well unless you built an underwater drill rig.
But there's still a better answer.
I'll give Dead Sea an approval for a correct answer if you explain why it's the lowest place on Earth.
Posted on 12/2/15 at 9:35 am to Pectus
quote:
Where's that?
South Pacific?
Posted on 12/2/15 at 9:36 am to upgrayedd
The challenge would be getting drilling equipment that could work at the depth of the Mariana Trench. The starting point would have to someplace we can access but still deep enough to get us closer to the goal.
Posted on 12/2/15 at 9:36 am to Pectus
quote:
OK, that's the lowest place on Earth, but still not where you want to drill.
You want to drill where the crust is the thinnest.
Where's that?
The oceanic crust is thinner than the continental crust, but you're still drilling from either the surface of the water or drilling undersea.
This post was edited on 12/2/15 at 9:37 am
Posted on 12/2/15 at 9:36 am to soccerfüt
quote:my sediments exactly
I would not want to drill through the crust and the pie pan into the mantle
Posted on 12/2/15 at 9:37 am to illuminatic
quote:I relish your negativity.
You are the worst.
Posted on 12/2/15 at 9:37 am to Pectus
quote:
I'll help you out with the sediment size...crust is thinnest where it's new and has little sediment accumulated. Where's that?
Ocean floor
Posted on 12/2/15 at 9:37 am to Pectus
quote:
I'll give Dead Sea an approval for a correct answer if you explain why it's the lowest place on Earth.
You're making me show my work?
Posted on 12/2/15 at 9:37 am to kilo1234
You ever drill through water? You ever drill through rock?
big difference.
big difference.
Posted on 12/2/15 at 9:37 am to kilo1234
quote:
The oceanic crust is thinner than the continental crust, but you're still drilling from either the surface of the water or drilling undersea.
Correct. It's wayyy thinner.
But there's still a better answer.
Here's the figure that gives it away...which also shows why the Dead Sea can get a pass as an OK answer.
Posted on 12/2/15 at 9:38 am to bamarep
quote:
In early December, the drill ship JOIDES Resolution will depart Colombo, Sri Lanka, and head for a spot in the southwestern Indian Ocean known as Atlantis Bank. There, it will lower a drill bit and try to screw it through 1.5 kilometres of rock, collecting a core sample as it goes. If all goes well, future expeditions — not yet scheduled or funded — will return and finalize the push into the mantle (see ‘Deep understanding’).
I could be wrong, but haven't some deepwater platforms drilled this far?
I don't know if the crust is just that much thicker but I know the last offshore project I was on had drilled to a depth of 22,000 feet below the sea floor...
ETA - Looks like the crust is 30 to 50 kM deep...not sure how the hell drilling 1.5 KM is going to do anything
This post was edited on 12/2/15 at 9:41 am
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