Staurolite schist - Glen Clova
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Fact sheet
Description: 

This rock was deposited in the late Proterozoic period, probably as a mudstone, before being subject to regional metamorphism in the Grampian orogeny. It now forms part of the Dalradian succession in Scotland within the 'staurolite' Barrovian metamorphic zone (Barrow zones include chlorite-biotite-garnet-staurolite-kyanite-sillimanite). The rock was collected in Elf Hillock, Glen Clova, Scotland.

The thin section is distinguished by abundant garnet with inclusion trails, with characteristic high relief and isotropism when viewed in crossed polars. Staurolite has similar features but can be distinguished from garnet by its yellow colour and pleochroism, and its low order birefringence colours. The section also contains muscovite, biotite, feldspar and quartz, all of which appear relatively undeformed and unstrained indicating a lack of deformation after peak metamorphism.

In Place
In Time
infoImage: 
Location description: 
Elf Hillock, Glen Clova, Scotland
Accuracy:
Location precision: 
Poor
Timescale:
Timescale: 
Cambrian
Ma = Millions of years ago
In Focus
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Type:
Type: 
metamorphic
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