Zircon crystal
Published on Nov 18, 2015
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PRESENTATION OUTLINE
ZIRCON CRYSTAL
A 4.4 BILLION YEAR OLD CRYSTAL SHEDS NEW LIGHT ON EARTHS CREATION
WHAT IS IT?
- It's 4.4 billion years old
- It's smaller than a grain of rice
- It's composed mainly of the elements zirconium, silicon and oxygen. Small amounts of uranium also appear in it
Photo by jsj1771
WHATS SIGNIFICANT
- It's the oldest rock found
- It is evidence that by that point in its history, Earth had gone from a superheated ball of molten rock to a solid surface eventually capable of supporting life.
Photo by ellenm1
WHAT IA ZIRCON?
- It's a rock that formed when earth cooled
- There on of the oldest rocks
- It's made of these elements: zirconium, silicon and oxygen, and amounts of uranium
Photo by hawkwing3141
