Oooh! Well if you would like more details I can definitely give more - for example, I didn't talk at all about seismology, and the way that the seismic "shadow zone" on the opposite side of the globe to an earthquake tells us about the presence of a liquid core; or about how we can use seismic wave travel times to actually image the Earth's interior, including identifying subducting slabs deep in the mantle. It's all really fascinating stuff. If you have further questions I am genuinely very happy to go on about this stuff at some length :-)

Lovely to make your acquaintance; thanks so much for the compliment :-) If you'd be interested I'm happy to grant you access - most of my stuff under access-lock at the moment is brainwork (counselling logs, relationship/abuse processing, etc) with occasional forays into stuff about my family.