Posted on 08/22/2021 10:16:24 AM PDT by BenLurkin
Think of the red bluffs and cliffs of the Grand Canyon as Earth's history textbook, explained Barra Peak, lead author of the new study and a graduate student in geological sciences at CU Boulder. If you scale down the canyon's rock faces, you can jump back almost 2 billion years into the planet's past. But that textbook is also missing pages: In some areas, more than 1 billion years' worth of rocks have disappeared from the Grand Canyon without a trace.
It's a mystery that goes back a long way. John Wesley Powell, the namesake of today's Lake Powell, first saw the Great Unconformity during his famed 1869 expedition by boat down the rapids of the Colorado River.
The difference between those two types of rocks is significant. In the western part of the canyon toward Lake Mead, the basement stone is 1.4 to 1.8 billion years old. The rocks sitting on top, however, are just 520 million years old. Since Powell's voyage, scientists have seen evidence of similar periods of lost time at sites around North America.
Roughly 700 million years ago, basement rock in the west seems to have risen to the surface. In the eastern half, however, that same stone was under kilometers of sediment.
The difference likely came down to the breakup of Rodinia, a gigantic land mass that began to pull apart at about the same time, Peak said. The researchers results suggest that this major upheaval may have torn at the eastern and western halves of the Grand Canyon in different ways and at slightly different times—producing the Great Unconformity in the process.
(Excerpt) Read more at phys.org ...
I used to really admire Kent until he showed his fealty to Hillary. How smart could he be after that?
Maybe both figures are wrong - maybe the earth is much younger than they think it is.
Maybe their methods of dating are erroneous, maybe their benchmark is off.
We do know that time is not a constant, flows differently around massive objects. Maybe there are other variables we don't know about.
I’ve seen other shows that have attributed the lost layers of rock to great iceages that scoured the ground down to the basement rock.
Exactly. Different scientists come up with different theories, but there is no way to prove any of them out - we cannot rerun the experiment.
I guess all scientific theories have merit, but having a Biblical world-view is just lunacy....
I’m not a young earther because that view is not scriptural but rather a number calculated by some 19th century brits and imposed on the text.
I do not know how old the earth is, and I don't really think it matters.
The important thing is: "In the beginning God created...."
Sez it's due to the breakup of Rodinia, for which it's usually in vogue to blame Yoko.
“In the beginning God created....”
Agree.
I thought N. America was moving away from Europe at about the rate fingernails grow—4 inches a year.
“I’m not a young earther because that view is not scriptural but rather a number calculated by some 19th century brits and imposed on the text.”
Absolutely right on the money... Good to see someone else around knows REAL history for a change.
The interesting part is that the brits calculations on the age of the earth roughly correlate with the Jewish calendar which begins in 3761 BC.
https://web.library.yale.edu/cataloging/hebraica/about-hebrew-calendar#:~:text=The%20starting%20point%20of%20Hebrew,a%20cycle%20of%2019%20years.
The Jewish calendar system is not biblical but rather comes from extra biblical sources—like the sumerians— whose beginnings archaelogist estimate to have started sometime after 4000 BC. They lasted until about 2000 BC when they were defeated by Hammmurabi’s babylonians. Hammurabi like his successors simply grafted the Sumerian civilization achievements like mathematic, writing and literature onto their own civilizations.
The the sumerians were to their successors in the region like the Greeks were to the Romans.
Parts of Sumerian myth and history have their echos in genesis.
The patriarch Abraham left one of the capitals of Sumeria—Ur—At the time of the final crack up of the sumerian civilization.
Water was always the explanation for the Grand Canyon.
Consider that you have Bryce Canyon and Capitol Reef National Monuments not to far away.
Oh I’m hip to the history, just good to see someone else who understands the historical chain of facts rather than just dreamed up stuff.
I will watch the series again to be sure. It is well worthwhile.
And, yes, the movement of the continents are very slow but very impactful.
San Rafael Swell. It’s where I buried the missing moenkopi sandstone, kaibab limestone, an an abundance of the chinle formation and the mossback shinarump.
I just wish I could just remember where... damn, I hate getting old.
Maybe check Wupatki area.....
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