** CD410. [[WWII airplanes are now beneath thousands of "annual" ice layers]].
* CD500: Mountain Building
** CD501. [[On an old earthEn una tierra vieja, mountains would have eroded by nowlas montañas ya se habrían erosionado]].
** CD502. [[Volcanic mountains are built too fast for an old earth]].
** CD510. [[Folded rocks must have been soft when folded]].