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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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1

Differences in staurolite mode due to changes in bulk composition as an effect of mass transfer by fluids during metamorphism

Nilsson, Jonas January 2014 (has links)
Results from petrographic analyses, chemical analyses and mineral phase diagram calculations show that staurolite minerals grew in selvages adjacent to quartz veins. Previous studies show the same relationships between quartz veins and garnet, as well as kyanite growth. The selvages are formed as metamorphic fluids flow through cracks, altering the bulk composition by mass transfer and triggers the nucleation and growth of new minerals. A pseudosection for a staurolite absent sample has been calculated using THERMOCALC. No stability field correlates to visually observed mineralogy. This indicates that a reaction forming staurolite never was triggered since no fluids was present during metamorphism.
metamorphism
metapelite
metapsammite
staurolite
glen esk
selvage
fluid flow
vein formation
dalradian
scotland
highlands
thermocalc
activity
phase diagram
mineral phase
pressure
temperature
p-t estimates

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