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Pyroxene Hornfels Facies - Petrology

Dr. Harel Thomas Petrology via YouTube

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This course examines pyroxene-hornfels facies, focusing on its characteristic minerals, assemblages, metamorphic reactions, pressure-temperature conditions, and occurrence in the Oslo region of Norway.

Syllabus

Intro
PYROXENE HORNFELS FACIES
INTRODUCTION CHARACTERISTIC MINERAL FEATURES - MINERALOGICAL ASSEMBLAGE - IMPORTANT REACTION - OSLO REGION, NORWAY - PHYSICAL CONDITION OF METAMORPHISM - CONCLUSIONS
Albite-Epidote-Hornfels Facies 2. Hornblende-Hornfels Facies 3. Pyroxene-Hornfels Facies 4. Sanidinite Facies
Muscovite + Quartz are no more stable and cordierite and andalusite/Sillimanite coexist with K-feldspar, biotite and almandine garnet are of restricted occurrence.
PYROXENE-HORNFELS FACIES CHARACTERISTIC MINERAL FEATURES
Presence of wollastonite in calcic assemblages and of calcite-forsterite-periclase (MgO) and calcite-forsterite - diopside in silica-poor dolomitic marbles. 5 . Almandine garnet when present has a high Fe2+/Mg ratio compared with that of granulite facies assemblages. The typical magnesian phase is cordierite.
Pyroxence Hornfels Facies
PYROXENE-HORNFELS FACIES CONCLUSIONS

Taught by

Dr. Harel Thomas Petrology

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