Olivine pyroxene amphibolite
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Fact sheet
Description: 

This coarse-grained rock from Scourie in Scotland is one of a series of metamorphosed intrusive rocks that have been extensively studied since they played an important role in helping geologists to separate two deformation phases in the ancient rocks of northern Scotland. This series of igneous rocks is known as the Scourie dyke swarm, since they intruded the host rocks after one phase of deformation but were subsequently deformed and metamorphosed in a later orogeny.

In thin section the rock contains olivine with prominent opaque rich alteration along the internal cracks. Also visible is pale pink pyroxene exhibiting good cleavage, and pale green amphibole exhibiting strong cleavage and many good examples of two cleavages with 120° angles between them.

In Place
In Time
infoImage: 
Location description: 
Scourie, Scotland
Accuracy:
Location precision: 
Good
Timescale:
Timescale: 
Archean
Ma = Millions of years ago
In Focus
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Type:
Type: 
igneous
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