Vein

 

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wpe1.jpg (27803 bytes)The formation of vein is similar to the formation of dyke but it is much smaller in scale.

Magma intruded into joints or cracks of rocks and solidified, forming veins.

The quatrz vein in Cheung Chau was broken by the displacement of rock(minor fault).

Fault is a kind of earth movement. It is the displacement of rock strata along a fault-plane by compression, tension or shearing force.

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