She surprised him by extending the forward edge of her mantle to touch it. He relinquished it somewhat reluctantly, fearing its destruction, but she was very delicate with it, holding it in a sort of living cage as if to feel it from all sides.
She withdrew her mantle from it and let it fall into his hand again. *Picture of rocks, pointing one way, more rocks, pointing the opposite way, repeated.*
“Iron in molten rocks holds the magnetic signature of the era when they solidified and captures the pattern of reversals. Is that what you mean?”
One knock. Two knocks. One knock.
*Picture of east coast and ocean and west coast of Europe, from very high up. Picture of same, but the continents visibly closer. Question?*
“You’re asking about continental drift? Plate tectonics? You know about t
