Can carbon-14 be used for objects older than 50 million years?

Question

If not, what is the best way to radioactively date something that's 100 million years old?

Answer 1

The half-life of carbon-14 is 5730±40 years.
So the answer to your first question is, "No."

Before the advent of absolute dating in the 20th century,archaeologists and geologists were largely limited to the use of relative dating techniques. Estimates of the order of prehistoric and geological events were determined by using basic stratigraphic rules, and by observing where fossil organisms lay in the geological record...

One of its great advantages is that any sample provides two clocks, one based on uranium-235's decay to lead-207 with a half-life of about 700 million years, and one based on uranium-238's decay to lead-206 with a half-life of about 4.5 billion years...
Potassium-40 has a half-life of 1.3 billion years...
Rubidium-strontium dating is based on the beta decay of rubidium-87 to strontium-87, with a half-life of 50 billion years (with errors of 30 to 50 million years for a 3-billion-year-old sample).

Siorry, didn't see much between 60,000 and 700 million years!

Answer 2

The carbon-14 dating limit lies around 58,000 to 62,000 years; which falls somewhat short of 50 million, prehaps better to use other methods;

Two other radiometric techniques are used for long-term dating. Potassium-argon dating involves electron capture or positron decay of potassium-40 to argon-40. Potassium-40 has a half-life of 1.3 billion years, and so this method is applicable to the oldest rocks. Radioactive potassium-40 is common in micas, feldspars, and hornblendes, though the blocking temperature is fairly low in these materials, about 125°C (mica) to 450°C (hornblende).

Rubidium-strontium dating is based on the beta decay of rubidium-87 to strontium-87, with a half-life of 50 billion years. This method is used to date old igneous and metamorphic rocks, and has also been used to date lunar samples; Rubidium-strontium dating is not as precise as the uranium-lead method, with errors of 30 to 50 million years for a 3-billion-year-old sample.

Hope this helps

Answer 3

Carbon 14 dating is so wildly inaccurate it would never qualify as evidence in any court. Some sample of known age, our modern age, have been erroneously dated to million of years old, and visa versa. Unfortunately, there doesn't seem to be any method now known that is reliably accurate on all specimens, so carbon 14 is quite primitive really, but the best we have to date.

Answer 4

Half-life of carbon-14 is nearly 500 years. For that reason its limit is just 50 thousand years. As far as I know, dating of 100 milion year old "something" is hard. Because you can always have some (maybe 1-3 milion years) uncertainity. For dating that object you can use potassium -argon, uranium-238, thermoluminesce and electron spin resonance.

Answer 5

> "did you understand carbon courting is in elementary words thousands of years no longer thousands of thousands or billions?" definite. So its a good job that carbon courting isn't used subsequently far older samples, isn't it? there are a variety of of, many different radiodating procedures (eg - Argon/Potassium, or Uranium/Lead), and that all of them agree on the common timescales for the historic previous of the image voltaic equipment. > "what the evolutionist do is they get all diverse readings on a lengthy time period, they in simple terms throw out those that do not line up with the evolutionary time table that's that straightforward, and then they submit the files.and present day it as actuality in a liberal media. yet any information pointing to creation is suppressed and not in any respect enable out to the media" truly? So no matter if it isn't released, then how did you detect out about it? And what reason might want to any scientist likely have for no longer liberating this information: disproving an common idea is what makes scientists well-loved, no longer parroting the present options.

Answer 6

No, it's half life is too short. There are many other radiometric techniques that can be used. Potassium-Argon and Uranium-Lead dating are the most widely used in Geology.

Uranium-lead dating is mainly used on Zircon crystals, but there are other crystals that it can be used on. Precision is in the 0.1 to 1% range on anything on earth over a milliion years old.

Potassium-Argon dating can be used on a wider range of minerals, for example volcanic ash, which can be very useful in putting absolute dates to stratigraphy.

Answer 7

yes....it is used for revealing the fossils of some kinda objects which are millions of years older...and also used for studyin the process of photosynthesis.....

Answer 8

No. Atomic decay of various other elements in surrounding minerals

Answer 9

the isotope radiocarbon 14 becomes very suspect after about 15,000 years!..Some, usually creationists say 1200 years!..

Answer 10

no, i don't think it is. try relative dating against something you know the date of