Earth was barren, flat and almost entirely under water 4.4 billion years ago
Earth was barren, flat and almost entirely under water 4.4 billion years ago: Scientists say the early Earth was likely to be barren, flat and almost entirely under water with a few small islands, following their analysis of tiny mineral grains as old as 4.4 billion years.
Article: Zircons Recast Earth's Earliest Era
(American Museum of Natural History)
http://www.amnh.org/explore/science-bulletins/earth/documentaries/zircons-time-capsules-from-the-early-earth/article-zircons-recast-earth-s-earliest-era/
Selected Research Articles:
The Hadean Crust: Evidence from >4 Ga Zircons
(HARRISON, 2009)
http://archenv.geo.uu.nl/pdf/Harrison%202009%20Ann%20Rev%20Hadean%20Zircons.pdf
Heterogeneous Hadean Hafnium: Evidence of Continental Crust at 4.4 to 4.5 Ga
(HARRISON et al., 2005)
http://sims.ess.ucla.edu/PDF/Harrison_et_al_2005_Science.pdf
Oxygen-Isotope evidence from ancient zircons for liquid water at Earth's surface 4,300 Myr ago
(MOJZSIS et al., 2001)
http://www.nature.com/nature/journal/v409/n6817/pdf/409178a0.pdf
Article: Zircons Recast Earth's Earliest Era
(American Museum of Natural History)
http://www.amnh.org/explore/science-bulletins/earth/documentaries/zircons-time-capsules-from-the-early-earth/article-zircons-recast-earth-s-earliest-era/
Selected Research Articles:
The Hadean Crust: Evidence from >4 Ga Zircons
(HARRISON, 2009)
http://archenv.geo.uu.nl/pdf/Harrison%202009%20Ann%20Rev%20Hadean%20Zircons.pdf
Heterogeneous Hadean Hafnium: Evidence of Continental Crust at 4.4 to 4.5 Ga
(HARRISON et al., 2005)
http://sims.ess.ucla.edu/PDF/Harrison_et_al_2005_Science.pdf
Oxygen-Isotope evidence from ancient zircons for liquid water at Earth's surface 4,300 Myr ago
(MOJZSIS et al., 2001)
http://www.nature.com/nature/journal/v409/n6817/pdf/409178a0.pdf
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