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Search "Archean"
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Archean | |
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About 6 pages (1,858 words) in 3 products |
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Encyclopedia and Summary Information
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Archean Summary
521 words, approx. 2 pages The Archean is the period in the earth's history from about 3.8 to 2.5 billion years ago (Ga). The term was derived from the Latin word for first because the beginning of the Archean is defined as the age of the oldest rocks identified on Earth....
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Archean Information
1,261 words, approx. 4 pages
 ImageSize = width:175 height:360 PlotArea = left:40 right:5 bottom:100 top:45 AlignBars = justify DateFormat = yyyy Period = from:2500 till:3800 TimeAxis = orientation:vertical order:reverse ScaleMajor = unit:year increment:500...


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 Science News
Fossils show early diversity of life. (Archean-era cyanobacteria fossils)
05/01/1993: 589 words, approx. 2 pages The record of ancient life preserved in Earth's oldest rocks shrinks to a handful of tattered pages as paleontologists struggle back through time to the Archean era the first 2 billion years of our planet's history, Now, recently identified fossil microorganisms add a...


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Archean | |
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About 6 pages (1,858 words) in 3 products |
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