A deep dive into ruptures that outrun their own seismic waves. We unpack the forbidden speed range between Rayleigh and S-waves for common mode-2 ruptures, reveal the Burridge–Andrews mechanism that launches a fast daughter crack ahead of the main rupture, and show how laboratory tests and modern sensors confirm this radical behavior. We’ll explore the telltale pulverized rock signatures left behind by super-shear events and what they reveal about earthquakes from the crust to the mantle.

Note:  This podcast was AI-generated, and sometimes AI can make mistakes.  Please double-check any critical information.

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