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Posted on 05/25/2009 4:20:13 PM PDT by SunkenCiv
The geologic faults responsible for the rise of the eastern Andes mountains in Colombia became active 25 million years ago -- 18 million years before the previously accepted start date for the Andes' rise, according to researchers at the Smithsonian Tropical Research Institute in Panama, the University of Potsdam in Germany and Ecopetrol in Colombia...
The team integrated new geologic maps that illustrate tectonic thrusting and faulting, information about the origins and movements of sediments and the location and age of plant pollen in the sediments, as well as zircon-fission track analysis to provide an unusually thorough description of basin and range formation.
As mountain ranges rise, rainfall and erosion wash minerals like zircon from rocks of volcanic origin into adjacent basins, where they accumulate to form sedimentary rocks. Zircon contains traces of uranium. As the uranium decays, trails of radiation damage accumulate in the zircon crystals. At high temperatures, fission tracks disappear like the mark of a knife disappears from a soft block of butter. By counting the microscopic fission tracks in zircon minerals, researchers can tell how long ago sediments formed and how deeply they were buried.
Classification of nearly 17,000 pollen grains made it possible to clearly delimit the age of sedimentary layers.
The use of these complementary techniques led the team to postulate that the rapid advance of a sinking wedge of material as part of tectonic events 31 million years ago may have set the stage for the subsequent rise of the range.
(Excerpt) Read more at sciencedaily.com ...
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Just to be clear here. These "researchers" are scientists, right?
As in, scientists say the earth is warming. Scientists say evolution is real, etc.
Well they’re older than me.
Well at least these “researchers”, as in scientiests, know where the 6000 year time line is located in a 25 million year old deposit of sediment.
Hmmm...I have that sinking feeling they are trying to say subduction without really saying it. And I want to know what CAUSED the rapid advance of a sinking wedge of material because it sounds like a lot of energy would be required. But I'm not a 'scientist' so I guess I'll just have to take their word for it. Like H*ell I will.
It’s easy to find fault with geologists.
Andies Mountains, Chile
isn’t there an ancient seaport that was found high up in the Andes?
Stop being such a sedimentalist.
Tiahuanaco, but it wasn’t a seaport, it was a port on the lake, but there’s probably more to come from Fred Nerks on that topic.
The candies are much younger than this.
you mean the Lemurians have been lying to me? :o
Is everyone in Texas an idiot or just you?
Puma Punku, truly startles the imagination. It seems to be the remains of a great wharf (for Lake Titicaca long ago lapped upon the shores of Tiahuanaco) and a massive, four-part, now collapsed building. One of the construction blocks from which the pier was fashioned weighs an estimated 440 tons (equal to nearly 600 full-size cars) and several other blocks laying about are between 100 and 150 tons. The quarry for these giant blocks was on the western shore of Titicaca, some ten miles away. There is no known technology in all the ancient world that could have transported stones of such massive weight and size. The Andean people of 500 AD, with their simple reed boats, could certainly not have moved them. Even today, with all the modern advances in engineering and mathematics, we could not fashion such a structure.
Puma Punku ruins, Tiahuanaco, Bolivia
Source: Jean-Pierre Protzen & Stella E.Nair, “On Reconstructing Tiwanaku Architecture”, Jpurnal of the Society of Architectural Historians, Vol. 59, Nr.3, 2000, pp. 358-371
pssst...'they' didn't have to carry it anywhere...IT'S CONCRETE!
By my calculations, they are about 4300 years old.
I think that’s a big /bingo.
The Primates of Lemuria are probably trustworthy.
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