< p >板块构造的一个永久的威胁是海洋中消失。科学陪审团可能仍然在这个问题上,但大多数地质学家和地球物理学家认为水是板块构造的润滑剂。在十亿年左右,太阳将成为发光的多10%。这是推测地球温室/失控的温室,接受一个不可阻挡的潮湿和海洋将消失。< / p > < p >的核心仍然是排放残余热量从地球的形成。为核心的冷却、铁的外核冻结到内核。这是冻结是额外的热量来源。地球的凝固的核心代表另一个永久的威胁板块构造。液态的外核是推测冷冻固体不到三十亿年。< / p > < p >近任期威胁下一个超大陆的形成。板块构造可能操作时断时续。是什么让俯冲带形成是未知的。 What is known is that a major subduction zone vanished when India collided with Asia, and no new subduction zones formed elsewhere to take its place. If this conjecture is true, plate tectonics will temporarily stop in a few hundred million years when the next supercontinent forms, only to restart later when too much heat stress builds up inside the planet. This is all highly conjectural. No scientist will live to see their conjectures falsified.
References:
Kasting (1988), "Runaway and moist greenhouse atmospheres and the evolution of Earth and Venus," Icarus 74.3 : 472-494
McDonough (2003), "Compositional model for the Earth's core." In Treatise on geochemistry 2 547-568.
Silver & Behn (2008), "Intermittent plate tectonics?" Science 319.5859.