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Angular UnconformitiesIf a horizontal layer of rock or sediment is underlain by a sequence of tilted rocks, you know two things: first, the underlying rocks, if they are sedimentary or if they are lava flows, used to be horizontal - so after they were laid down, they were somehow tipped. second, you know that you are looking at an angular unconformity - that is, there is a gap in the rock record between the tilting of the lower rocks and the deposition of the upper (horizontal) rocks.Comments7/17/2006 9:23:31 AMromar u. dagupan said: your tip is good but there is no illustration of angular unconformities
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