The three main methods used to date sedimentary rocks ...
The three main methods used to date sedimentary rocks ...
The three main methods used to date sedimentary rocks ...
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<strong>The</strong> evolution of time scales<br />
<strong>The</strong> interpretations of the ages of<br />
some stage and period boundaries<br />
have changed by more than 10 my,<br />
reflecting the evolution of interpretive<br />
<strong>methods</strong>, the collection of new data,<br />
and simple differences of opinion<br />
about the importance of particular<br />
data sets or ideas.<br />
<strong>The</strong> last column is from the latest work<br />
posted at www.stratigraphy.org
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