Here's what rhymes with seismicity.

Consider these alternatives

volcanism / given deformation / relation tectonically / chronically electrophysiological / logical interdisciplinarity / therapy subduction / production seepage / repeated seafloor / your vadose / was quakes / makes geothermal / external denudation / operation metamorphism / dwarfism outgassing / having magmatism / given oxazepam / can carotenes / means seamounts / amounts oscillations / relations sedimentation / operation