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<blockquote data-quote="newfie" data-source="post: 4085933" data-attributes="member: 58700"><p><em>It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites. Because the time this accretion process took is not yet known, and predictions from different accretion models range from a few million up to about 100 million years, the difference between the age of Earth and of the oldest rocks is difficult to determine. It is also difficult to determine the exact age of the <a href="https://en.wikipedia.org/wiki/Oldest_dated_rocks" target="_blank">oldest rocks</a> on Earth, exposed at the surface, as they are <a href="https://en.wikipedia.org/wiki/Aggregate_(geology)" target="_blank">aggregates</a> of minerals of possibly different ages. </em></p></blockquote><p></p>
[QUOTE="newfie, post: 4085933, member: 58700"] [I]It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites. Because the time this accretion process took is not yet known, and predictions from different accretion models range from a few million up to about 100 million years, the difference between the age of Earth and of the oldest rocks is difficult to determine. It is also difficult to determine the exact age of the [URL='https://en.wikipedia.org/wiki/Oldest_dated_rocks']oldest rocks[/URL] on Earth, exposed at the surface, as they are [URL='https://en.wikipedia.org/wiki/Aggregate_(geology)']aggregates[/URL] of minerals of possibly different ages. [/I] [/QUOTE]
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