Which rock forms by contact metamorphism of fine grained mudstones, shales, and volcanics?
A)hornfels
B)limestone
C)gneiss
D)phyllite

Question

Quizplus · Accepted Answer

Hornfels is a metamorphic rock that forms from the contact metamorphism of fine-grained sedimentary rocks such as mudstones, shales, and volcanics. The rocks are subjected to high temperature and pressure, resulting in recrystallization of minerals and the development of a dense, hard texture. Limestone, gneiss, and phyllite are not typically formed by contact metamorphism of these specific types of sedimentary and volcanic rocks.

Which Rock Forms by Contact Metamorphism of Fine Grained Mudstones