Calendar Of Earth'S History. It subdivides all time into named units of abstract time called—in descending order of duration— eons , eras , periods , epochs , and ages. How to track such a long, complex history?
4,567,000,000 years ago, earth was covered in molten lava. That is, starting with younger surficial deposits and descending into older.
Have You Ever Wondered What Happened Before People Arrived On The Scene?
This infographic offers a visual way to explore the various stages of the earth's history using a 12 hour clock analogy.
It Takes Place Every Year On 22 April.
Earth day was celebrated for the first time in 1970.
The Calendar Of Earth's Past History Indicating The Evolution Of Life Through Time Recorded In The Sequence Of Rocks.
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During The 19Th Century Geologists Realized That Earth Was Quite Older Than Previously Believed, However This Discovery.