Sciencescience

Sat Jan 26, 2019, 06:18 PM

Earth's Oldest Rock Found on the Moon

Scientists may have discovered the oldest Earth rock ever—on the Moon. A lunar sample returned by the Apollo 14 astronauts may contain a bit of Earth from about 4 billion years ago. The research about this possible relic from the Hadean Earth is published today in the journal Earth and Planetary Science Letters.

An international team of scientists associated with the Center for Lunar Science and Exploration (CLSE), part of NASA’s Solar System Exploration Research Virtual Institute, found evidence that the rock was launched from Earth by a large impacting asteroid or comet. This impact jettisoned material through Earth’s primitive atmosphere, into space, where it collided with the surface of the Moon (which was three times closer to Earth than it is now) about 4 billion years ago. The rock was subsequently mixed with other lunar surface materials into one sample.

The team developed techniques for locating impactor fragments in the lunar regolith, which prompted CLSE Principal Investigator Dr. David A. Kring, a Universities Space Research Association (USRA) scientist at the Lunar and Planetary Institute (LPI), to challenge them to locate a piece of Earth on the Moon.

Lunar sample
Rock fragment from the Moon.
Led by Research Scientist Jeremy Bellucci and Professor Alexander Nemchin, team members working at the Swedish Museum of Natural History and Curtin University in Australia rose to the challenge. The result of their investigation is a 2 gram fragment of rock composed of quartz, feldspar, and zircon, all commonly found on Earth and highly unusual on the Moon. Chemical analysis of the rock fragment shows it crystallized in a terrestrial-like oxidized system, at terrestrial temperatures, rather than in the reducing and higher temperature conditions characteristic of the Moon.

https://solarsystem.nasa.gov/news/820/earths-oldest-rock-found-on-the-moon/



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Arrow 31 replies Author Time Post
Reply Earth's Oldest Rock Found on the Moon (Original post)
wonderwarthog Jan 26 OP
Gamle-ged Jan 26 #1
wonderwarthog Jan 26 #3
freedumb2003 Jan 26 #7
D26-15 Jan 26 #2
wonderwarthog Jan 26 #4
D26-15 Jan 26 #9
wonderwarthog Jan 26 #11
quad489 Jan 26 #5
wonderwarthog Jan 26 #6
Gamle-ged Jan 26 #8
Gamle-ged Jan 26 #10
wonderwarthog Jan 26 #12
Gamle-ged Jan 26 #13
nolidad Jan 27 #14
SatansSon666 Jan 27 #15
wonderwarthog Jan 27 #16
nolidad Jan 27 #17
wonderwarthog Jan 27 #18
Cold Warrior Jan 27 #19
wonderwarthog Jan 27 #20
Cold Warrior Jan 27 #21
wonderwarthog Jan 27 #22
nolidad Jan 30 #27
SatansSon666 Feb 1 #30
nolidad Jan 30 #25
wonderwarthog Jan 30 #28
SatansSon666 Jan 28 #23
Micrometer Jan 28 #24
nolidad Jan 30 #26
SatansSon666 Feb 1 #29
oflguy Feb 1 #31

Response to wonderwarthog (Original post)

Sat Jan 26, 2019, 06:37 PM

1. The theory currently holds that early on in planetary formation, the new Earth was struck a...

Last edited Sat Jan 26, 2019, 08:37 PM - Edit history (1)

... glancing blow by a Mars-sized new planet which stripped off most of the Earth' s crust, setting the crustal debris into orbit around the Earth. The Mars-sized planet was destroyed, most of It's material joining and enlarging the Earth, adding its iron core to the Earth's iron core, giving the Earth possibly the largest iron core in our solar system. Venus would be a contender for the largest iron core because it has a dense atmosphere even though it's quite close to the Sun, and should be more affected by the solar wind than is the Earth.

The orbiting crustal debris gradually collided and merged together forming a single moon which orbited much closer than it now does. The Moon is STILL gradually moving further and further away from the Earth, and eventually there will be no further total solar eclipses, as the Moon will be too far away to completely obscure the Sun's disk...

- - - - -

Every year, the moon moves about 3.8 centimeters (1.5 inches) farther away from Earth. In addition, the sun is slowly growing larger as it fuses hydrogen into helium and consumes its nuclear fuel. The moon has been slowly slipping away from Earth ever since it formed billions of years ago, a time when the moon was closer and larger in the sky. Because it is getting farther away and smaller as viewed by us on Earth, and the sun is getting larger, there is an inevitable day when the moon will become too small in the sky to block the whole sun.

That day is about 600 million years in the future. A paper published by NASA predicts total solar eclipses will end in about 563 million years. However, Belgian astronomer Jean Meeus suggests in his book, More Mathematical Astronomy Morsels, that perturbations in the orbits of the moon and the Earth will result in periods of on-and-off total solar eclipses starting in 620 million years, and the very last one won't happen until 1.2 billion years from now.

https://www.popularmechanics.com/space/moon-mars/a27824/when-is-last-total-solar-eclipse/

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Response to Gamle-ged (Reply #1)

Sat Jan 26, 2019, 06:46 PM

3. Great post!


I am glad I won't be here for those changes.

The conceit of our species amazes me more the older I get.

All of what we see here is temporary, an in the mind of the universe the blink of an eye, or less.

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Response to Gamle-ged (Reply #1)

Sat Jan 26, 2019, 06:55 PM

7. Sounds pretty bad -- no question we have to tax everyone on Earth

 

Because, solar growth.

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Response to wonderwarthog (Original post)

Sat Jan 26, 2019, 06:39 PM

2. Nope, that was my rock and it only dates back to about 1969.

I was out in the back yard talking to a friend one evening and told him that I could throw a rock over the moon...

It didn't quite make it.



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Response to D26-15 (Reply #2)

Sat Jan 26, 2019, 06:46 PM

4. 1969 was a great year



for rockers!


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Response to wonderwarthog (Reply #4)

Sat Jan 26, 2019, 07:00 PM

9. Yep... WOODSTOCK.

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Response to D26-15 (Reply #9)

Sat Jan 26, 2019, 08:48 PM

11. Great music


I was 12 y.o. at the time, Mom wouldn't let me go.


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Response to wonderwarthog (Original post)

Sat Jan 26, 2019, 06:48 PM

5. Interesting...one would've thought the oldest Earth rock would be found on Earth itself.

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Response to quad489 (Reply #5)

Sat Jan 26, 2019, 06:51 PM

6. Indeed!


The fact that another planet the size of Mars collided with us freaks me out a bit, too!


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Response to quad489 (Reply #5)

Sat Jan 26, 2019, 06:57 PM

8. There may be some original crustal rock left somewhere on the Earth that hasn't been subsumed...

... back into the mantle by plate tectonics, but for now, the oldest solid Earth rock is on the Moon, save for any of THAT brought back by spacemen or by a chance meteor-Moon strike that broke off some Moon and tossed it Earth ways. I have a piece of very old rock I brought back from Greenland...

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Response to Gamle-ged (Reply #8)

Sat Jan 26, 2019, 07:04 PM

10. Speaking of old rock...

As of 2008, the oldest rocks on Earth known are 4.03 billion years old, from the Acasta Gneiss in the Northwest Territories of Canada. These rocks were found in the Canadian Shield, a very ancient section of the Earth’s crust. Originally the rock was part of a very old mountain chain, the core of which was exposed over billions of years due to glacial activity. The rock formed during the Hadean period, the oldest geologic division of time on Earth, which began at the planet’s formation 4.57 billion years ago and continued until the dawn of the Archean, 3.8 billion years ago. Many of the world's oldest rocks are from this era.

Other extremely old rocks have been found in Western Greenland and Western Australia. These are about 3.8 billion years old at most, and their age is used as the dividing marker between the Hadean and Archean eons. The continental crust as a whole is quite old, with ages in the billions of years. This is quite different than the oceanic crust, which is continuously recycled through subduction zones and has an average age of only 100 million years.

https://www.wisegeek.com/how-old-are-the-oldest-rocks-on-earth.htm

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Response to Gamle-ged (Reply #10)

Sat Jan 26, 2019, 08:51 PM

12. Really interesting!


Kind of puts our bit of time here into perspective!


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Response to wonderwarthog (Reply #12)

Sat Jan 26, 2019, 09:47 PM

13. The chunk of rock I found and kept was found one Winter day/night (didn't matter, 24 hours DARK)..

... when I took a break and went outside and up a hill across from the RCA motor pool for a view of the South Mountain installation lights about five miles across a permafrost plain. I had a pen light and noticed some COLOR on the rocks. You don't SEE color there in Winter, but I saw some green/yellow and a little red.

Lichen growing on rock, about midway between the Arctic circle and the North pole... it's still growing on my rock, nearly 60 years later. I keep it out of the direct Florida sunlight, rinse it off every few months with filtered water, otherwise it lives on humidity. Some lichen can live for 4,000 years...


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Response to wonderwarthog (Original post)

Sun Jan 27, 2019, 09:28 AM

14. So grateful Fred Flintstone

had complicated scientific devices to record what they say happened supposedly 4,000,000,000 years ago!

An impact that would eject material that fast to escape earths gravity so it could land on the moon would have been a planet killer and left "such a mark"!!!!!!

I am stunned so many critical thinkers can buy these fables without thinking it through because a person in a lab coat spews it out!

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Response to nolidad (Reply #14)

Sun Jan 27, 2019, 10:09 AM

15. Are you fucking serious?

We have round rocks from MARS on our planet, but yeah, no way an asteroid impact early in earth's history could have propelled rocks to the moon. You actually expect evidence of a crater from 4 billion years ago.

You truly have no clue how anything works.
It's really too bad that you are stuck in a 6000 year old earth delusion that forbids you from experiencing reality. This is one of the most ridiculous posts you have made here. You offer no wisdom or evidence of a anything, just your own made up scenario and what should have happened. We all know you suck at science, all fields.
Completely your own fault though, so I'll just laugh at you instead of feeling bad for you.

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Response to nolidad (Reply #14)

Sun Jan 27, 2019, 10:53 AM

16. I take it this happened


While the planet was still being formed.

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Response to wonderwarthog (Reply #16)

Sun Jan 27, 2019, 03:00 PM

17. If you buy into that untested unobserved hypothesis of planetary formation

and if you buy that a meteor smashed into a forming planet and did not cause its destruction, and if you buy that with the miniscule % of the moon we have explored it is what the whole moon is like! Imagine someone only exploring the Grand Canyon of earth- wonder what they would report the eath is like to their people?

Once again we are given a whole bunch of ifs we are expected to believe because those pontificating on them are secularists with PHD after their name.

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Response to nolidad (Reply #17)

Sun Jan 27, 2019, 05:59 PM

18. You mean



It's not made of green cheese?


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Response to wonderwarthog (Reply #18)

Sun Jan 27, 2019, 07:12 PM

19. No, it means Yahweh poofed the moon and earth into existence!

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Response to Cold Warrior (Reply #19)

Sun Jan 27, 2019, 07:23 PM

20. He ate the original green cheese moon



and let one rip!


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Response to wonderwarthog (Reply #20)

Sun Jan 27, 2019, 07:28 PM

21. BTW, thanks for a great thread. Fascinating stuff. Don't let my sarcasm wreck it

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Response to Cold Warrior (Reply #21)

Sun Jan 27, 2019, 10:04 PM

22. Sarcasm is like tabasco



It goes with anything!


You're welcome!


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Response to Cold Warrior (Reply #19)

Wed Jan 30, 2019, 05:57 PM

27. Interesting!

We know an omnipotent God spoke it all into existence.

You buy that nothing one day woke up, and that nothing exploded and poofed everything into existence!



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Response to nolidad (Reply #27)

Fri Feb 1, 2019, 08:31 AM

30. Nope. Nobody says nothing exploded.

Only creationists that can never understand the theory.

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Response to wonderwarthog (Reply #18)

Wed Jan 30, 2019, 05:54 PM

25. avocados!

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Response to nolidad (Reply #25)

Wed Jan 30, 2019, 06:26 PM

28. ...



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Response to nolidad (Reply #17)

Mon Jan 28, 2019, 05:44 AM

23. Lmfao.

We can't observe the earth forming, so.. Yahweh!!

Unreal how ridiculous you have to be to make your points.
You really are incapable of seeing through your delusions.
Sad.

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Response to nolidad (Reply #17)

Mon Jan 28, 2019, 08:16 PM

24. There is none so blind as those who will not see.


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Response to Micrometer (Reply #24)

Wed Jan 30, 2019, 05:55 PM

26. Well no one saw what this guy is trying to sell but yet lots of folks are just gulping the kool aid

without even bothering to think things through!

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Response to nolidad (Reply #26)

Fri Feb 1, 2019, 08:14 AM

29. Nope. They never though it through.

Nobody drinks more kool-aid than you.
ICR brand.
Micrometer was dead on.

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Response to wonderwarthog (Original post)

Fri Feb 1, 2019, 08:42 AM

31. How much money did we spend?

To bring a rock from earth back from the moon?

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