Thanks for the link. I studied geology back in college in the late 1960s when tectonic plates and continental drift were regarded as radical theories not generally accepted. I learned a new kind of rock: “minette,” a heat fused sandstone which forms the matrix of Shiprock in Arizona. The Grand Canyon would have been formed by subsurface sealed water pockets and aquifers with high ionization potential that attract massive electrical discharges.
Because of this apparent truth, Mars itself has large quantities of aquifer loaded substrate. There can be little doubt about it when one regards the surface locations there carved by plasma and lightning discharges in the electrical web configurations much like the Grand Canyon.
It would be interesting to build a massive device which could actually attract lightning strikes that way, and store the power for later use.
Thanks for the link. You can learn something every day, even at my age, LOL.