Carbon dating based assumptions
Isotope levels can be measured extremely accurately, much more accurately than when carbon-dating methods were first devised.
I checked out the Department of Earth Sciences at Brock University and noticed that they offer a radiocarbon dating service.
One of their samples BGS-43 was dated 3000 YEARS IN THE FUTURE, more than once.
Dear Mr P Thank you for your email of 6 March, submitted via our website. April 2014] The BGS-43 entry records this sample as coming from a large bore hole in Oak Island, Canada.
I found the entry for the BGS-43 wood sample you referred to in the table at Brock University. The entry includes the comment ‘The “Calculated Age” is ~ +3000 yrs into the future.
There is evidence of changes in carbon isotope ratios from era to era, region to region, species to species, and even from one part of an individual organism to another part.
For examples, see the section ‘Other factors affecting carbon dating’ from Chapter 4 ‘What about carbon dating?
’ of I highly recommend getting a copy of this book.
Repeated sample and got the same results.’ Testing of atmospheric nuclear bombs in the 1950s and 60s dramatically increased levels of radiocarbon (carbon-14, C) in the atmosphere—see the graph below.
Measurements have always shown fluctuations in the level of atmospheric radiocarbon, but since the peak in the mid 1960s, the level has been steadily decreasing overall.