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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…

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Lo x 100

Area

Lo = width

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