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Youth-Earth Evolutionism

on December 19, 2009
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LiveScience: “Mammoths Were Alive More Recently than ThoughtMammoths didn’t die out that long ago: a creationist conclusion or the latest evolutionary idea?

Until recently, the prevailing old-earth perspective was that woolly mammoths survived until between 15,000 and 13,000 years ago. That’s the date given by some radiocarbon tests, and that date is matched with an extinction event perhaps caused by (among other ideas) environmental changes or human predation.

The scientists concluded that their “graveyard” spanned from about 7,600 to 11,000 years ago.

New research challenges the previous date, however. Scientists adopted a novel technique: testing frozen dirt for microscopic fragments that contain plant or animal DNA, indicating what organisms were alive when. (Note that this dating technique rests on the same old-age assumptions that many other dating methods, such as radiocarbon dating, employ.) A team recovered sediment from Alaska and recovered what team member Richard Roberts of the University of Wollongong calls “a genetic graveyard, frozen in time.”

Through further radiocarbon and other dating techniques, the scientists concluded that their “graveyard” spanned from about 7,600 to 11,000 years ago. The recovered samples contained DNA from the Arctic hare, bison, moose, horse, and mammoth. The finding shows that previous extinction estimates were overzealous and that smaller “pockets” of mammoths may have survived later than thought.

“Extinctions often seem dramatic and sudden in fossil records,” explained mammoth expert Ross MacPhee of the American Museum of Natural History. “But our study provides an idea of what an extinction event might look like in real time, with imperiled species surviving in smaller and smaller numbers until eventually disappearing completely.”

In fact, MacPhee implies an intriguing point that frequently seems lost on old-earth scientists: just because the fossils of an organism don’t exist in a certain part of the fossil record doesn’t mean that organism wasn’t alive when that part of the fossil record was laid down. In other words, the absence of evidence is not evidence of absence (read more about this concept in The Historical Development of the Old-Earth Geological Time-Scale.) Of course, this point is magnified if one rejects the old-earth tale of how the fossil layers were deposited. Thus (for example), even if we were to accept the team’s dating methods for the frozen sediments (which we don’t), mammoths could have survived even more recently than 7,600 years. By the same logic, dinosaurs could have outlived their “extinction” placed at 65 million years ago (as evolutionists have concluded).

If one looks through the lens of the biblical worldview, however, the focus is quite different. The fossil record and frozen sediments are largely the result of a global Flood about 4,500 years ago and the Ice Age that ensued. As for the last temporal whereabouts of the mammoth, young-earth creationists have done their own research.


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