Fluxion gabbro - Ardnamurchan
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Fact sheet
Description: 

This ‘Fluxion’ gabbro, so called because the plagioclase grains are aligned to give the appearance of flow, comes from Sithean Mor, and forms part of the Centre 3 complex on Ardnamurchan, Scotland. The complex is one of three centres on the peninsula that were intruded during the Paleogene age North Atlantic volcanic province. The fabrics appear to have formed in a crystal mush, prior to final solidification and have subsequently been affected (mildly degraded) by sub-solidus recrystallization.

The thin section illustrates plagioclase alignment, with laths 1-5 mm in length. Altered pyroxene grains and opaque minerals form the majority of the remainder of the rock with minor biotite

In Place
In Time
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Location description: 
Sithean Mor, Ardnamurchan, Scotland
Accuracy:
Location precision: 
Good
Timescale:
Timescale: 
Paleogene
Ma = Millions of years ago
In Focus
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Type:
Type: 
igneous
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