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.
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Metamorphic aureoles typically contain nonfoliated rock like hornfels because a. they form at shallo...
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