Siteadmin, Check users, Administrators
12,071
edits
Changes
→You Just Gotta Be Kidding Me
::As for the so-called problems with the K-AR method, there aren't any. Asking anyone to use the K-AR method to get the age of the 1980-86 eruption is like using Big Ben to measure how tall an ant is. The half-life of potassium-40 is rather long - 1,250 million years. Plus a few thousand years are not enough time for 40Ar to accumulate in a sample at high enough concentrations to be detected and assessed. As a result, the K-Ar method cannot be used to date samples that are much younger than 6,000 years old.
::As for the so-called problems with the K-AR method, there aren't any. Asking anyone to use the K-AR method to get the age of the 1980-86 eruption is like using Big Ben to measure how tall an ant is. The half-life of potassium-40 is rather long - 1,250 million years. Plus a few thousand years are not enough time for 40Ar to accumulate in a sample at high enough concentrations to be detected and assessed. As a result, the K-Ar method cannot be used to date samples that are much younger than 6,000 years old.
::As I said, this old chestnut has long been exploded. [[User:Darkmind1970|Darkmind1970]] 18:10, 6 February 2008 (EST)
::As I said, this old chestnut has long been exploded. [[User:Darkmind1970|Darkmind1970]] 18:10, 6 February 2008 (EST)
:::Now let me get this straight: you're only ''now'' saying that the lava that appears at an eruption should still contain a great deal of daughter nuclide? That doesn't make a bit of sense to me. I think you're misrepresenting the science here, and I demand that you produce a citation that the rest of us can check out for a comment that I consider outrageous.--[[User:TerryH|TerryH]]<sup>[[User talk:TerryH|Talk]]</sup> 19:01, 6 February 2008 (EST)