How do they know the meteorite crater is 50,000 years old?

Hi All,

This was a question from the lecture relating to the Barringer crater: http://www.barringercrater.com/education/craterfacts.php

Here is one way to do it: http://en.wikipedia.org/wiki/Radiometric_dating

Apparently scientists also use a technique called "relative dating" which assumes new rock layers are found on top of old rock layers.

It would be interesting to build some of this into your islands.

Cheers

Lecture 02 is live

Hi All,

You can download lecture 02 on the Real vs Representation here:

http://russelllowe.com/benv2423_2013/experiment1/reference/Lecture02_EXP1_realrep_2013_web.pdf

Cheers