Tìm kiếm bất động sản

Tìm kiếm địa điểm, khu vực Hủy bỏ
  • BĐS bán
  • BĐS cho thuê
  • BĐS bán
  • BĐS cho thuê
  • BĐS bán
  • BĐS cho thuê
  • Dự án

Carbon-14 is considered to be a highly reliable dating techniques

Carbon-14 is considered to be a highly reliable dating techniques

Experts are finding a reason for the newest puzzling endurance off softer structure and DNA fragments during the dinosaur bones – the brand new bones is more youthful than simply anyone actually ever thought.

New theoretic restrict to possess C-fourteen matchmaking are 100,100 age playing with AMS, however, f or fundamental objectives it is 45,100000 so you can 55,100000 many years, with regards to the kind of gizmos

Members of this new Paleochronology category exhibited its findings at 2012 Western Pacific Geophysics Meeting when you look at the Singapore, erican Geophysical Partnership (AGU) plus the Asia Oceania Geosciences Community (AOGS).

While the dinosaurs can be more 65 mil years old, the headlines are unique – and most some you will definitely tolerate. Adopting the AOGS-AGU appointment within the Singapore, the new conceptual is actually taken off the brand new conference web site by a few chairmen because they couldn’t undertake the newest results. Reluctant to difficulties the info openly, they removed the statement from societal view in place of a word so you’re able to the fresh people. In the event that authors inquired, it acquired that it letter:

It don’t go through the analysis in addition they never ever spoke towards boffins. They failed to including the test outcomes, so they censored her or him.

It’s accuracy has been verified by using C-14 up until now artifacts whoever many years is well known over the years. Brand new fluctuation of the quantity of C-14 regarding ambiance throughout the years contributes a little suspicion, however, toxic contamination by the “modern carbon dioxide” like rotten natural number from soils presents an elevated opportunity for error.

Carbon-14 (C-14) matchmaking from numerous examples of bones away from 8 dinosaurs used in Tx, Alaska, Texas, and you can Montana showed that they are merely twenty-two,000 to 39,one hundred thousand years old

Dr. Thomas Seiler, a beneficial physicist from Germany, provided the latest demonstration for the Singapore. He mentioned that his team and also the laboratories they working took additional care to get rid of pollution. One to integrated securing the fresh new trials, to avoid damaged section from the skeleton, and you can careful pre-cleaning of your own examples having chemical substances to eliminate it is possible to pollution. Comprehending that brief levels away from collagen is also interest pollution, it opposed accuracy Accelerator Size Spectrometry (AMS) screening off collagen and you can bioapatite (tough carbonate bones mineral) which have antique relying types of high bone fragments from the exact same dinosaurs. ” Researching particularly various other molecules just like the nutritional elements and organics regarding exact same bone region, i gotten concordant C-14 show that have been better below the upper limitations out-of C-fourteen relationship. This type of, along with many other reples regarding more fossils, geographic places and stratigraphic ranks generate haphazard pollution because resource regarding the fresh new C-14 unlikely”.

New half of-lifetime of C-14 is 5730 years. If the dinosaur skeleton is 65 million yrs . old, there really should not be one atom off C-14 remaining in them.

Clearly something was incorrect on traditional information regarding dinosaur bones, it might have been hard to achieve the public into suggestions. Even after are effortless test results without any interpretation, these people were prohibited to be demonstrated from inside the fulfilling procedures by the the 2009 United states Paleontological Meeting, this new Western Geophysical Connection last year and you will 2012, the fresh Geological Society from The united states in 2011 and you can 2012, and also by the latest publishers of several scientific magazines. On a single celebration, they were allowed to monitor an effective poster. Everything is actually finally published from inside the an online record towards , to present the new Carbon-14 study away from dinosaur skeleton near to similar data from other material on the geologic column.

Of a lot dinosaur bones are not petrified. Dr. Mary Schweitzer, paleobiology researcher and you may professor of biological sciences at the North carolina County College or university, astonished researchers within the 2005 whenever she claimed finding flaccid structure within the dinosaur bones. She already been a good firestorm out of controversy within the 2007 and 2008 when she reported that she got sequenced protein in dinosaur limbs.

Experts energized that the results was in fact mistaken or you to just what she titled softer structure really was biofilm produced by germs which had registered away from outside the bones. Schweitzer responded the difficulty by the research which have antibodies. The girl report in ’09 siti incontri elite verified the current presence of collagen or other necessary protein one bacteria don’t make. — Schweitzer, . Biomolecular Characterization and Necessary protein Sequences of one’s Campanian Hadrosaur B. canadensis. Research, Vol. 324, Zero. 5927, pp. 626-631 DOI:/research.1165069

Compare listings

So sánh