zircons

University of Wisconsin-Madison geologist Takayuki Ushikubo and colleagues used a sophisticated new instrument called an ion microprobe to analyze isotope ratios of the element lithium in zircons, the oldest known materials on Earth, from the Jack Hills in western Australia.

Geologists Claim Earth Was Habitable 4.3 Billion Years Ago | Disinformation 2008

By comparing these chemical fingerprints to lithium compositions in zircons from continental crust and primitive rocks similar to the Earth’s mantle, they found evidence that the young planet already had the beginnings of continents, relatively cool temperatures and liquid water by the time the Australian zircons formed.

Geologists Claim Earth Was Habitable 4.3 Billion Years Ago | Disinformation 2008

Certain crystals called zircons, obtained from drilling into very deep granites, contain uranium which has partly decayed into lead.

You said it | RELIGION Blog | dallasnews.com 2009

Scientists say geologists have found older mineral grains called zircons in Western Australia.

english.chosun.com : Total 2008

The research by Harrison, Hopkins and Craig Manning, a UCLA professor of geology and geochemistry, is based on their analysis of ancient mineral grains known as zircons found inside molten rocks, or magmas, from Western Australia that are about 3 billion years old.

innovations-report 2008

Recent evidence from very ancient rocks known as zircons suggests that stable oceans and continental crust had emerged as long as 4.404 billion years ago, a mere 150 million years after the Earth’s formation.

COSMIC SOUP News from Mad Plato 2009

Recent evidence from very ancient rocks known as zircons suggests that stable oceans and continental crust had emerged as long as 4.404 billion years ago, a mere 150 million years after the Earth’s formation.

Archive 2009-06-01 News from Mad Plato 2009

There have been zircons found in the Jack Hills of australia that point to oxygen rich oceans as early as 4.3 billion years ago.

An Ancient Time Frame 2009

There have been zircons found in the Jack Hills of australia that point to oxygen rich oceans as early as 4.3 billion years ago.

An Ancient Time Frame 2009

There are several ways of knowing that one layer of rock is older than another, microscopic examination of crystaline structures within the rock (like zircons) is one, intrusion of lava, sedimentation, erosion, metamorphosis and other processes can date rock.

Man made global warming? No way! 2009