Earth: An Introduction to Physical Geology (12th Edition)

Published by Pearson
ISBN 10: 0134074254
ISBN 13: 978-0-13407-425-2

Chapter 23 - Section 23.6 - Igneous and Metamorphic Processes - Concept Checks - Page 724: 4

Answer

Ore deposits can be related to contact metamorphism when they form as a result of the heat and chemical changes associated with the intrusion of a hot igneous body (magma) into the surrounding country rocks. During contact metamorphism, the high temperature of the intruding magma alters the minerals in the adjacent rocks, leading to the formation of new minerals, including valuable ore minerals. As the magma cools, the minerals precipitate and accumulate, forming ore deposits. Examples of contact metamorphic ore deposits include skarn deposits, which are formed by the interaction of hot magma with carbonate-rich rocks, leading to the deposition of ore minerals like copper, tungsten, and iron.

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