12/6/2022 1 Metamorphic Rocks and Cleavage Development Geol341 J. Toro 2019 Many diagrams are from Earth Structure, van der Pluijm and Marshak, 2004 Topics • Fabrics • Foliation, cleavage, lineation – Cleavage and Folds – Geometry – Strain significance • Origin of Cleavage – Pressure solution – Passive rotation – Recrystallization • Shear zones Geothermal Gradient and Metamorphism Naming of Metamorphic Rocks Banded rock with evidence of partial melting Slatey cleavage Where does it come from? Gneiss Segregation of mafic and felsic components 1 2 3 4 5 6
Metamorphic Rocks and Cleavage Development
Jun 23, 2023
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