Sentences with phrase «lost over geological time»

That chemical signature is often lost over geological time, so it's remarkable that we can identify it in such ancient fossils.»

Not exact matches

The authors hope that this study will help others digitally recreate paleontological, geological, or archaeological specimens that have been lost or deteriorated over time, but for which old photographic documentation exists.

Over the last half - century, people have removed so much of that protective cover by clearcutting, overgrazing, and overplowing that the world is quickly losing soil accumulated over long stretches of geological tOver the last half - century, people have removed so much of that protective cover by clearcutting, overgrazing, and overplowing that the world is quickly losing soil accumulated over long stretches of geological tover long stretches of geological time.

Over the last half - century, clearcutting, overgrazing, and overplowing have removed so much of that protective cover that the world is quickly losing soil accumulated over long stretches of geological time (see «Civilization's Foundation Eroding&raquOver the last half - century, clearcutting, overgrazing, and overplowing have removed so much of that protective cover that the world is quickly losing soil accumulated over long stretches of geological time (see «Civilization's Foundation Eroding&raquover long stretches of geological time (see «Civilization's Foundation Eroding»).