Determining the metamorphic history of rocks using combined EBSD & EDS

In this application note, a high temperature (T) and pressure (P) metamorphic rock from NW Scotland has been analysed using combined EBSD and EDS. The analysis, for the first time in this well-studied metamorphic complex, identifies all 3 types of Al₂SiO₅ – andalusite, kyanite and sillimanite – which form under distinct P-T conditions. This, together with detailed information about the relationship between different metamorphic minerals and an examination of deformation-related microstructures, enables a refinement of our understanding of the P-T history of these rocks.

By downloading this application note you will learn how:

• EBSD and EDS can reliably identify key metamorphic minerals
• The combination of chemistry and crystallography reveals each mineral’s history
• A single analysis can provide extensive information about a rock’s metamorphic evolution