BIOL 4673 Lecture Notes - Lecture 3: Talc, Coesite, Forsterite
3 Mar 2018
School
Department
Course
Professor
Document Summary
Lecture 8 : review and continuation of metamorphic protolith and rocks. Different controls on metamorphic textures, controls ere pressure and type of pressure field metamorphic rock is under, mineral assemblage controlled by protolith. Mineral assemblage tells us pressure and temperature conditions are that rock was equilibrated at. Protolith controls bulk composition that with temperature and pressure controls mineral assemblage. Which of the following is true : barrovian sequence is applicable to high pressure meta. And buchan to low pressure metamorphism: the barrovian sequence is applicable to low pressure meta, and buchan to high pressure meta. Metamorphosed basaltic rocks, different minerals at different grades. Familiar with graph, metamorphism of basic rocks that are what the names of faces fields were named after, because greenschist tended to be metamorphic basic rock with green minerals. Petrology- mineral assemblages: represent the chemical equilibrium state under certain metamorphic conditions, controlled by metamorphic reactions (next week)
