HFBoards

Go Back   HFBoards > Non-Sports > Sciences
Mobile Hockey's Future Become a Sponsor Site Rules Support Forum vBookie Page 2
Sciences A place to discuss natural, applied & social sciences, along with any other academically-oriented topics of interest to membership.

Confirmed: Zircon crystal is oldest known piece of Earth

Reply
 
Thread Tools
Old
02-25-2014, 09:21 AM
  #1
qc
Dare to Dream
 
qc's Avatar
 
Join Date: Aug 2011
Posts: 11,746
vCash: 69
Confirmed: Zircon crystal is oldest known piece of Earth

http://articles.chicagotribune.com/2...tal-jack-hills

Quote:
Scientists using two different age-determining techniques have shown that a tiny zircon crystal found on a sheep ranch in western Australia is the oldest known piece of our planet, dating to 4.4 billion years ago.

Writing in the journal Nature Geoscience on Sunday, the researchers said the discovery indicates that Earth's crust formed relatively soon after the planet formed and that the little gem was a remnant of it.



qc is offline   Reply With Quote
Old
02-25-2014, 12:07 PM
  #2
Hurt
Registered User
 
Hurt's Avatar
 
Join Date: Apr 2009
Country: Canada
Posts: 23,471
vCash: 500
Things like this make you realize that in the grand scheme of things, dinosaurs were alive not THAT long ago.

__________________
Shoot me a PM with your concerns. Also, come visit us in the Science Forum!
Hurt is offline   Reply With Quote
Old
02-25-2014, 12:49 PM
  #3
No Fun Shogun
Global Moderator
34-38-61-10-13
 
No Fun Shogun's Avatar
 
Join Date: May 2011
Location: Shogunate of Nofunia
Country: Fiji
Posts: 27,797
vCash: 1
Quote:
Originally Posted by Hurt View Post
Things like this make you realize that in the grand scheme of things, dinosaurs were alive not THAT long ago.
Very true. It's like my first reaction upon hearing of the idea of Snowball Earth and that complicated, multicellular life only really developed in the past 750 million years or so.... "That's it?"

__________________

Nerd, don't estimate all humanity by the limitations of your own capability. - Steve Smith, Professor of History, University of China, IL
No Fun Shogun is online now   Reply With Quote
Old
02-25-2014, 03:03 PM
  #4
MarkGio
Registered User
 
Join Date: Nov 2010
Country: Canada
Posts: 10,268
vCash: 500
Lookinh at the picture there, I never would have guessed this:

Quote:
The zircon was extracted in 2001 from a rock outcrop in Australia's Jack Hills region. For a rock of such importance, it is rather small. It measures only about 200 by 400 microns, about twice the diameter of a human hair.

MarkGio is offline   Reply With Quote
Old
02-25-2014, 04:28 PM
  #5
Beef Invictus
Global Moderator
Beef Runner
 
Beef Invictus's Avatar
 
Join Date: Dec 2009
Location: Centreville
Country: Lord Howe Island
Posts: 40,669
vCash: 500
It's really hard to wrap my head around the concept of 4 billion years.

__________________
Down in the basement, I've got a Craftsman lathe. Show it to the children when they misbehave.
Beef Invictus is online now   Reply With Quote
Old
02-25-2014, 04:59 PM
  #6
Fugu
Administrator
HFBoards
 
Fugu's Avatar
 
Join Date: Nov 2005
Location: Pac NW
Posts: 30,759
vCash: 500
Quote:
Originally Posted by Hurt View Post
Things like this make you realize that in the grand scheme of things, dinosaurs were alive not THAT long ago.

Aren't we all about the same age? It's not like new matter shows up on Earth. All the atoms get recycled in new combinations.

So you probably have some dinosaur atoms in you.

Fugu is offline   Reply With Quote
Old
02-25-2014, 09:04 PM
  #7
jdhebner
HFBoards Sponsor
 
Join Date: Feb 2003
Location: I ain't cousin Basil
Posts: 824
vCash: 500
Matter-wise we are all offspring of the stars... We don't know where our electrons have been however.

__________________
47 Flavors of Goal Celebrations.
jdhebner is online now   Reply With Quote
Old
02-25-2014, 11:24 PM
  #8
Hurt
Registered User
 
Hurt's Avatar
 
Join Date: Apr 2009
Country: Canada
Posts: 23,471
vCash: 500
Quote:
Originally Posted by Fugu View Post
Aren't we all about the same age? It's not like new matter shows up on Earth. All the atoms get recycled in new combinations.

So you probably have some dinosaur atoms in you.
You are right. That probably explains all the hunger and no brains.

Hurt is offline   Reply With Quote
Old
02-26-2014, 04:26 PM
  #9
Sharpshooter1
Registered User
 
Sharpshooter1's Avatar
 
Join Date: Dec 2011
Posts: 6,750
vCash: 550
Quote:
Originally Posted by Fugu View Post
Aren't we all about the same age? It's not like new matter shows up on Earth. All the atoms get recycled in new combinations.

So you probably have some dinosaur atoms in you.
Loved the bit where Neil DeGrasse Tyson says that the atoms in your left-hand could have easily come from a different star than the atoms in your right hand.

New matter shows up on earth constantly in the form of meteorites as well as solar dust i think as well.

I did like the thought that there's ancient atoms that were perhaps shared by extinct stars or even dinosaurs though. It's a neat thing to be aware of.

Sharpshooter1 is offline   Reply With Quote
Old
02-28-2014, 07:31 PM
  #10
Vor
RIP Lounge
 
Vor's Avatar
 
Join Date: Mar 2013
Location: Searching 4 a Lounge
Country: Canada
Posts: 5,379
vCash: 50
Quote:
Originally Posted by Beef Invictus View Post
It's really hard to wrap my head around the concept of 4 billion years.
Indeed. The human brain just isnt capable of fathoming numbers that large other than nominally. Like you could look at 50,000 people and be like damn, thats a lot of people. But when it comes to intrinsically knowing numbers of that magnitude, it's just not possible with how our brains are wired.

I wonder how much this crystal would be worth.

Vor is offline   Reply With Quote
Old
02-28-2014, 11:35 PM
  #11
Led Zappa
Tomorrow Today!
 
Led Zappa's Avatar
 
Join Date: Jan 2007
Location: Sunnyvale, CA
Country: Scotland
Posts: 33,856
vCash: 500
Quote:
Originally Posted by VoicexOfxReason View Post
Indeed. The human brain just isnt capable of fathoming numbers that large other than nominally. Like you could look at 50,000 people and be like damn, thats a lot of people. But when it comes to intrinsically knowing numbers of that magnitude, it's just not possible with how our brains are wired.

I wonder how much this crystal would be worth.
$4 Billion sounds about right

__________________

Youth Movement! Tally Ho...
Led Zappa is offline   Reply With Quote
Old
03-01-2014, 12:05 AM
  #12
Analyzer
#WeAreBoston
 
Analyzer's Avatar
 
Join Date: Jan 2008
Location: Renfrew, ON.
Country: Canada
Posts: 42,298
vCash: 500
Shouldn't this be buried by layers of dust, sand, rock and other stuff ?

This rock is like the Earth's first pet... that just lives forever.

Analyzer is offline   Reply With Quote
Old
03-01-2014, 02:05 PM
  #13
Hurt
Registered User
 
Hurt's Avatar
 
Join Date: Apr 2009
Country: Canada
Posts: 23,471
vCash: 500
Just to boggle your mind about the magnitude of time:

'There is 83 million years between Stegosaurus and Tyrannosaurus Rex, but just 66 million years between you and T. rex.'

Today feels like it's a long day and I've only been awake a few hours.

Hurt is offline   Reply With Quote
Old
03-03-2014, 01:22 AM
  #14
MarkGio
Registered User
 
Join Date: Nov 2010
Country: Canada
Posts: 10,268
vCash: 500
Quote:
Originally Posted by VoicexOfxReason View Post
Indeed. The human brain just isnt capable of fathoming numbers that large other than nominally. Like you could look at 50,000 people and be like damn, thats a lot of people. But when it comes to intrinsically knowing numbers of that magnitude, it's just not possible with how our brains are wired.

I wonder how much this crystal would be worth.
I think scale is important. You could imagine 4 billion grains sand I think. Just picture a mountain of sand.

MarkGio is offline   Reply With Quote
Old
03-03-2014, 01:47 AM
  #15
aleshemsky83
Registered User
 
Join Date: Apr 2008
Posts: 9,232
vCash: 500
Quote:
Originally Posted by MarkGio View Post
I think scale is important. You could imagine 4 billion grains sand I think. Just picture a mountain of sand.
But you'd just be picturing a monolith not the actual individual pieces

It's like counting 1 of something really large you can't actually picture 4 billion individual things

aleshemsky83 is online now   Reply With Quote
Old
03-03-2014, 10:03 AM
  #16
Hurt
Registered User
 
Hurt's Avatar
 
Join Date: Apr 2009
Country: Canada
Posts: 23,471
vCash: 500
Quote:
Originally Posted by MarkGio View Post
I think scale is important. You could imagine 4 billion grains sand I think. Just picture a mountain of sand.
Yes but if someone was to dump a mountain of sand, you will think "that's one mountain of sand" not "that's 4 billion grains of sand". Well, in most cases.

Hurt is offline   Reply With Quote
Old
03-03-2014, 11:50 PM
  #17
Beef Invictus
Global Moderator
Beef Runner
 
Beef Invictus's Avatar
 
Join Date: Dec 2009
Location: Centreville
Country: Lord Howe Island
Posts: 40,669
vCash: 500
Apparently 4 billion grains of sand is only about 4 dump truck loads, so that's not as impressive as expected

Edit: Apparently that's for very coarse sand. Fine sand? you'd be looking at about 36 buckets.

Beef Invictus is online now   Reply With Quote
Old
03-04-2014, 09:38 AM
  #18
Hurt
Registered User
 
Hurt's Avatar
 
Join Date: Apr 2009
Country: Canada
Posts: 23,471
vCash: 500
Quote:
Originally Posted by Beef Invictus View Post
Apparently 4 billion grains of sand is only about 4 dump truck loads, so that's not as impressive as expected

Edit: Apparently that's for very coarse sand. Fine sand? you'd be looking at about 36 buckets.
Semantics.

Hurt is offline   Reply With Quote
Old
03-04-2014, 12:01 PM
  #19
Vor
RIP Lounge
 
Vor's Avatar
 
Join Date: Mar 2013
Location: Searching 4 a Lounge
Country: Canada
Posts: 5,379
vCash: 50
Quote:
Originally Posted by MarkGio View Post
I think scale is important. You could imagine 4 billion grains sand I think. Just picture a mountain of sand.
Demonstrates my point perfectly. You don't imagine the 4 billion individual grains of sand. Your brain can't do that. You just imagine the one large sum quantity. But if you never knew specifically how many grains there were in that mountain, then you'd never be able to guess it. The human brain just cannot empirically, thoroughly fathom numbers that large.

Vor is offline   Reply With Quote
Reply

Forum Jump


Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 11:37 AM.

monitoring_string = "e4251c93e2ba248d29da988d93bf5144"
Contact Us - HFBoards - Archive - Privacy Statement - Terms of Use - Advertise - Top - AdChoices

vBulletin Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
HFBoards.com is a property of CraveOnline Media, LLC, an Evolve Media, LLC company. 2014 All Rights Reserved.