equations to work out extension and compression of folds

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Dykes D Key equations
i
a
g
r
a
m
area of dyke
area of country rock x100
1. Area
% extension
change in length
original lengthx100
2. Linear
% extension
Folds D Key equations
i
a
g
r
a
m
3. Area
% shortening Ln-Lo x100
Lo
4. Linear Ln-Lo x100
Lo
% shortening area = width
lo
Ln ­ Lo

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Lo x 100
Area
Lo = width…read more

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