Which of the following rock types is formed by heat,pressure,or chemical reactions within the earth's crust acting on the other two major types of rocks?
A)tectonic
B)metamorphic
C)sedimentary
D)igneous

Question

Quizplus · Accepted Answer

Metamorphic rocks are formed by the transformation of existing rock types, known as protoliths, through heat, pressure, and chemical reactions within the earth's crust. Sedimentary rocks are formed through the weathering and erosion of existing rocks, while igneous rocks are formed through the cooling and solidification of magma or lava. Tectonic is not a recognized rock type.

Which of the Following Rock Types Is Formed by Heat,pressure,or