2007-06-17 05:18:45 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
In the very beginning!
It would have formed during the earliest Geologic Eon of time, known as the Hadean: http://en.wikipedia.org/wiki/Hadean
We don't have much in the way of rock from this time, but we have grains within other rocks that have been dated to ~4.4 billion years ago, that's only 200 million years after the earth is thought to have coalesced. So but this time we had rocks, as well as the processes of erosion to break them down into smaller grains.
2007-06-17 05:34:42 · answer #1 · answered by Fuller 3 · 2⤊ 0⤋
When the earth coalesced out of the debris that the sun and all the planets condensed out of. ~
2007-06-17 05:27:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋
When earth cooled sufficiently and crust formed and the crust got disintegrated by rains and by running water in rivers.
2007-06-17 05:22:57 · answer #3 · answered by Swamy 7 · 0⤊ 1⤋
sand is basically crumpled up rocks and seashells. So it's probably been here since the beginning!
2007-06-17 05:23:59 · answer #4 · answered by Anonymous · 2⤊ 1⤋