  Structure formation heralds the era of deviation of the matter content of the
Universe away from thermal equilibrium, so the gravitational contribution to
entropy, in the form of Weyl curvature, must become active in order for the
overall entropy of the Universe to remain increasing. The tidal and frame
dragging sectors of the Weyl tensor must inevitably both be present in this
dynamic environment, as they mutually induce each other. The frame dragging
effect is able to impress vorticity onto the plasma current arising due to the
mass disparity between electrons and protons, which in turn begets a magnetic
field from none. We show that this gravity-driven magnetogenesis mechanism,
besides being able to operate outside of galaxies, thus facilitate large
coherence length scales, may be able to generate the field strength necessary
to seed dynamo processes.
