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Who developed it and when?
It was developed by It was
Andrew Ellicott discovered on
Douglass who was an 22nd June 1929
American astronomer. when excavating
houses, barns
and huts in
Arizona.…read more

Slide 3

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What is it used for?
It can be used for:
·Freshly cut trees
·Live trees
·Samples where you can see the radius of
the tree
·Old beams e.g. in houses
·It is best in conifer trees…read more

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How to get a sample from a live
·You get a core drilled out of the tree
·This core leaves a hole of 15mm which then has
to be filled with dowel to minimise the damage
cause to the tree
·The core should include the bark…read more

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How does tree ring dating work?
·You can look at the rings on a tree to help to
work out many things like:
·The age of the tree
·How old the tree is (the date its grown
·The change in climate/weather…read more

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Dating from Dendrochronolgy
· By counting the amount of rings on a tree you
can get an idea about how old the tree was when
it was cut down or the when the sample is taken
from it.
This tree has 12
rings which
shows that it was
12 years old when
it was cut down…read more

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