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Published February 1938 | public
Journal Article

Depth and geographical distribution of deep-focus earthquakes


Early in the history of seismology it was occasionally suggested that, in addition to earthquakes with foci comparatively near the surface of the earth, shocks might also originate at depths of the order of several hundred kilometers. However, down to a comparatively recent date, all such conclusions were either purely speculative or were based on inadequate or misinterpreted data.

Additional Information

© 1938 Geological Society of America. Manuscript received by the Secretary of the Society, August 11, 1937. Read before the Cordilleran Section of the Society, April 10, 1937.

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October 26, 2023