Whats the oldest rock?

0 ⤊

out of limestone, sandstone, and shale, what is the oldest? i need this for a science question.

shale, limestone, then sandstone

2007-12-04 10:54:56 · answer #1 · answered by kuijin2008 1 · 0⤊ 3⤋

The oldest rock appears to be a 4.4 billion year old zircon from Australia. Its source is postulated to be a granite.

2007-12-04 11:02:53 · answer #2 · answered by Amphibolite 7 · 0⤊ 1⤋