Magnetic Alterations in Oceanic Crust: Implications for Evolution and Resource Exploration

Abstract

This review examines the role of magnetic alterations in the oceanic crust and their impact on understanding crustal evolution, hydrothermal processes, and mineral resource exploration. Magnetic anomalies in the oceanic crust are a result of various geological and geophysical processes, including fluid-rock interactions, tectonic movements, and microbial activity. These alterations provide valuable insights into the geodynamic history of the oceanic crust and its potential for mineral resource exploration, particularly in regions associated with active hydrothermal systems. Advancements in geophysical survey technologies, such as autonomous underwater vehicles (AUVs) equipped with magnetometers, have revolutionized mineral exploration, allowing for more efficient and targeted resource discovery. The ability to detect magnetic anomalies in the oceanic crust has greatly enhanced our understanding of the tectonic, hydrothermal, and microbial processes that shape the seafloor. These advancements in geophysical survey technologies, particularly in the use of AUVs and magnetometers, have revolutionized mineral exploration in deep-sea environments. The paper also discusses the challenges of understanding complex magnetic alteration processes and the future directions for research in this field, including the need for interdisciplinary approaches and sustainable practices in deep-sea mining.