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Structural geology

To fault or not to fault

Most of the oceanic crust has a simple layered structure. The discovery that slow-spreading ridges exhibit a comparatively complex crustal structure and some of the largest extensional faults on Earth is leading to the recognition of a new mode of seafloor spreading.

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Figure 1: A three-dimensional view of the Kane segment of the Mid-Atlantic Ridge at 23° N.

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Acknowledgements

Citations relating to the Chapman conference indicate those speakers who were invited to give overview talks. The ideas discussed here therefore represent a summary of ideas from various workers.

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Cheadle, M., Grimes, C. To fault or not to fault. Nature Geosci 3, 454–456 (2010). https://doi.org/10.1038/ngeo910

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