A sillimanite hornfels would_______ .
A) usually form from the complete subduction of ocean crust deep into the mantle
B) lie on the outermost edge of a contact aureole where hornfels are preserved
C) lie entirely within the core of the contact aureole occupied by the high grade
D) be formed at the highest grade of regional metamorphism

Question

Quizplus · Accepted Answer

Sillimanite hornfels forms in the core of a contact aureole, where the temperature conditions are highest due to proximity to the intrusive igneous body, leading to high-grade metamorphism.

A Sillimanite Hornfels Would_______