The red line between the underlying and tilted (nearly vertical) sedimentary layers and the overlying less tilted (nearly horizontal) strata is an angular unconformity. In this case, the rocks ...

The information for this angular unconformity is here and this is what ... every aspect of our lives—from culture to business, science to design. The breakthroughs and innovations that we ...

The “angular unconformity” of rocks layers of varying types and orientation could only have formed over tens of millions of years. It was a crucial piece of evidence in his theory of Earth’s ...

That is, until you get deep into the canyon and find the Great Unconformity ... Originally published on Live Science. Stephanie Pappas is a contributing writer for Live Science, covering topics ...