Observation of contact metamorphic rocks and examination of petrogenetic grids reveals that Zeolite, Prehnite-Pumpellyite, Albite-Epidote Hornfels, Hornblende Hornfels, Pyroxene Hornfels, and Sanidinite facies constitute Contact Metamorphic Facies Series.
The University of the State of New York 'Regents High School Examination'