contestada

Metamorphic aureoles typically contain nonfoliated rock like hornfels because a. they form at shallow burial depths (less than 8 km). b. they form as a consequence of shearing without a subsequent change in temperature or pressure. c. they form adjacent to an intruding pluton, which provides heat for metamorphism. d. compressional forces associated with mountain building provide the necessary pressure to create hornfels.

Respuesta :

Answer:

c. they form adjacent to an intruding pluton, which provides heat for metamorphism.

Explanation:

  • In metamorphic rocks, the contact metamorphism produces the aureoles in the surrounding zones of the rocks that get altered.
  • There varies in the thickness from the from centimeters to several kilometers like the large granitic intrusions and they typically consist of non foliated rocks formed due to the heat sources and intruding plutons.

Metamorphic aureoles are defined as all types of rocks that can be transformed into metamorphic rocks under different heat and pressure.

Metamorphic aureoles typically contain non-foliated rock-like hornfels because they form adjacent to an intruding pluton, which provides heat for metamorphism.

  • Metamorphic aureoles consist of nonmetamorphic rocks, which are formed due to igneous intrusions where the temperatures are high but pressures are relatively low.

  • The rocks vary in thickness from a few centimeters to several kilometers. The rocks consist of the pluton intrusion that provides heat but no shearing stress for foliation.

Thus, the correct answer is Option A.

To know more about metamorphic rocks, refer to the following link:

https://brainly.com/question/6565164

Otras preguntas