Earth Science | VOL. 13, ISSUE 76, January-February 2013

Why didn’t the human race end by year 2012?

From the violent beginning of the earth, it took nearly 800 mega-annum (Ma) to cool down (Hadean Eon). Igneous and metamorphic rocks from 3800 Ma to 2500 Ma (Archaean Eon) were formed principally followed by sedimentary rocks from 2500 Ma to 570 Ma (Proterozoic Eon) and mixed rock types on land as well as in the oceans from 570 Ma to the present (Phanerozoic Eon). The understanding of the origin of life and its commencement during the Archaean Eon is...

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