http://www.boogiemiami.com Meet Singles Around The World Fri, 17 Jun 2011 16:36:50 +0000 hourly 1 http://wordpress.org/?v=3.2 http://www.boogiemiami.com/radioactive-dating-techniques/comment-page-1/#comment-9758 Terence Fri, 17 Jun 2011 16:36:50 +0000 http://aupacomenterprises.com/boogiemiami.com/radioactive-dating-techniques/#comment-9758 In radiometric dating, how do we know what the isotope was when the rock was formed in order to zero our clock? In radiometric dating, how do we know what the isotope was when the rock was formed in order to zero our clock?

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