Questions tagged [age]

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What US State has the most complete rock record? [duplicate]

The title seems self explanatory to me. I thought about it when I was looking at a geologic map of Utah, and it seemed to include an exceptional amount of time. I mean this in the sense that there ...
14
votes
5answers
3k views

Could the earth be much older than the currently accepted number?

According to wikipedia, the Earth is about 4.543 billion years old. If I understand correctly, this number is based on radiometric age-dating of meteorites. So basically, the logic is this: We've got ...
1
vote
2answers
43 views

What would be the predicted/calculated ages using several samples of soil with the help of carbon 14 test?

Assume there are several soil/rock (take it) samples as follows taken from different depth of the earth sample from surface of the earth = Sample A sample from 1km deep of the earth = Sample B sample ...
3
votes
1answer
96 views

How to sample for K-Ar dating?

How much sample of volcanic rock is required to undertake a K-Ar date measurement, and does it matter if the rock contains vesicles? Are there tricks of the trade to get a good sample?
7
votes
2answers
1k views

How old is Earth's groundwater?

In my house, we drink the groundwater that we get from our well. It is 40 meters deep. The question is, how old is the water that we drink today? Is it from the rain 100 years ago? Another issue is, ...