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  • 4.28 Billion Year Old Rock Vestige - Remnant of Earth's Crust - Discovered in Canada : EcoWorldly

    The following fascinating scientific information is for those of us who don't believe in fairy tales: Researchers in Canada have found 4.28 billion year old rocks, probably the world's oldest, and which may be remnants of a portion of the first crust that formed at the surface of our... more

    Reviewed by yobaba Nov 09 2008, 07:39am ( 10 reviews ) • ecoworldly.com

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  • Rated by Lolaone on Aug 16, 4:17pm

    Photo by poolie via FlikrThe researchers who made the discovery estimated the age of the terrestrial rocks using isotopic dating, which analyzes the decay of the radioactive element, neodymium-142, contained within them, a technique that can only be used to date rocks roughly 4.1 billion years old or older. The Earth is 4.6 billion years old, and remnants of its early crust are extremely rare - most of it has been mashed and recycled into Earth's interior several times over by plate tectonics since the Earth formed.TY mikayf:)

  • Rated by mikayf on Aug 11, 10:12pm

    Surprising that anything survived the heavy bombardment period AND 4.28 billion years of a geologically active planet!

  • Rated by geojim56 on Nov 09 2008, 5:36pm

    From the page: "Researchers in Canada have found 4.28 billion year old rocks, probably the world's oldest, and which may be remnants of a portion of the first crust that formed at the surface of our planet, known as the primordial crust."The ancient rocks were found in Northern Quebec, along the Hudson's Bay coast, 40 km south of Inukjuak in an area known as the Nuvvuagittuq greenstone belt."Thanks to Foggy1 for sending thus along.

  • Rated by yobaba on Nov 09 2008, 7:39am

    The following fascinating scientific information is for those of us who don't believe in fairy tales: Researchers in Canada have found 4.28 billion year old rocks, probably the world's oldest, and which may be remnants of a portion of the first crust that formed at the surface of our planet, known as the primordial crust. The ancient rocks were found in Northern Quebec, along the Hudson's Bay coast, 40 km south of Inukjuak in an area known as the Nuvvuagittuq greenstone belt. The researchers who made the discovery estimated the age of the terrestrial rocks using isotopic dating, which analyzes the decay of the radioactive element, neodymium-142, contained within them, a technique that can only be used to date rocks roughly 4.1 billion years old or older. The Earth is 4.6 billion years old, and remnants of its early crust are extremely rare - most of it has been mashed and recycled into Earth's interior several times over by plate tectonics since the Earth formed. The discovery team included McGill University earth scientists, Jonathan O'Neil and Don Francis teamed up with Richard W. Carlson, a researcher at the Carnegie Institution for Science in Washington, D.C., and Ross K. Stevenson, a professor at the Université du Québec à Montréal (UQAM). The discovery, whose results are published in the September 26 issue of the journal Science, pushes back age of most ancient remnant of Earth's crust by 300 million years, according to the researchers. O'Neil said: "Our discovery not only opens the door to further unlock the secrets of the Earth's beginnings. Geologists now have a new playground to explore how and when life began, what the atmosphere may have looked like, and when the first continent formed." I love science!

  • Rated by growthy on Nov 06 2008, 12:38pm

    From the page: "The discovery, whose results are published in the September 26 issue of the journal Science, pushes back age of most ancient remnant of Earth's crust by 300 million years, according to the researchers. "

  • Rated by Barrie501 on Sep 28 2008, 8:41pm

    From the page: Researchers in Canada have found 4.28 billion year old rocks, probably the world's oldest, and which may be remnants of a portion of the first crust that formed at the surface of our planet, known as the primordial crust. Thank you to gavin Hudson for this article.

  • Rated by gavinhudson on Sep 28 2008, 7:36pm

    I love fun science like this.

  • Rated by ironeus on Sep 28 2008, 12:58pm

    Researchers in Canada have found 4.28 billion year old rocks, probably the world's oldest, and which may be remnants of a portion of the first crust that formed at the surface of our planet, known as the primordial crust.