"You will be the laughed at, generation of geologists who believed in the subduction theory. Just like those who believed the Sun went around the Earth or the Earth was flat and you could fall off the edge. You are the duped generation of geologists. Let me rip at your heart and brain for a few minutes, and give you a chance at redemption. As a geologist did you ever sit and contemplate a group of geodes? Some, cut apart, or one, simply together, as a rock? Fascinating, aren't they? Humble things, geodes? Hmmmmm?
"What if I told you that a geode was a model for the Earth, all planets, moons and even suns? I mean even without deep discussion, you do see the similarities yes? They're round for the most part. They have a crust of many types of material. Then under that crust it's more crystal, but the crystal is randomly angled as if it were adjusting to new random angles, but further in the angles are clearly pushing outward (and inward) perpendicular to the surface, unlike the near-surface angles.
"These crystals, as you know, are straight sided like, say, basalt or iron. Straight-sided crystals aiming outward are in an odd place being in a ball. Because the ball shape resists the straight sided being larger on the outside, smaller on the inside. So the crystals are irregular lengths going inward. They all can't grow inward regularly, can they? They would compress tighter and tighter. So they accede to their neighbor longer shafts going in.
"Yes, molecules do add to the inner ends creating compression and having no inward release they must push outward. This is growth without life! (A stepping stone for life, perhaps.) Now this is physics, of course, and you geologists don't talk to physicists much, so you wimp out. They would tell you if straight sides grow within a sphere, inward they will push outward and as a result the geode will grow outward! So, a geode grows!
It does? It must!! That's physics!!!" - Neal Adams( Read more... )