Barrovian
This mineral is the lowest index mineral in the Barrovian sequence.
What is chlorite?
This mineral displays greenish brown to blue pleochroism in PPL.
What is chloritoid?
Glaucophane is diagnostic of this high pressure, low temperature rock associated with subduction zones.
What is a blueschist?
Hornfels form from this type of metamorphism.
What is contact metamorphism?
A phenocryst to an igneous rock is like a ______ to a metamorphic rock.
What is a porphyroblast?
This mineral is sometimes described as looking 'spongy.'
What is staurolite?
This is the highest grade zone in the Buchan Facies Series.
What is the sillimanite zone?
This amphibole typically has a bladed/columnar form and is found in marbles/skarns.
What is wollastonite?
Biotite, andalusite, cordierite, and sillimanite are the index minerals for this metamorphic sequence.
What is Buchan?
This type of porphyroblast tends to overprint the foliation.
What is a post-deformational porphyroblast?
This mineral can be fibrous.
What is sillimanite?
In Lab 7, we learned about two new minerals in the Buchan Series. This mineral is the one with lower relief.
What is cordierite?
This mineral is sometimes described as having a 'stained glass' appearance in XPL.
What is epidote?
This type of metamorphic sequence is most likely found over a large-scale area in an orogenic belt.
What is a Barrovian sequence?
Unlike Barrovian series rocks, Buchan series rocks tend to lack this texture.
What is foliation?
This rock type is the protolith of the classic Barrovian metamorphic sequence.
What is shale?
Chiastolite is a variety of this mineral.
What is Andalusite?
This mineral displays a diagnostic bright pink pleochroism in PPL.
What is piemontite?
During metamorphism, the enrichment of this element in carbonate protoliths creates calc-silicate rocks, instead of marbles.
What is silicon/aluminum?
This texture is characterized by 120 degree angle grain boundaries.
What is granoblastic texture?
This mineral is sometimes described as looking like 'tree-bark' in PPL.
What is Kyanite?
Cordierite tends to alter to this mica, which is yellow in PPL.
What is pinite?
What is a migmatitic gneiss?
This metamorphic rock will form at 15 km within the core of a reverse fault.
What is mylonite?
This metamorphic texture will develop from a compressive stress that is oriented parallel to the planes of an existing foliation.
What is crenulated texture?