Secular Cooling of Earth as a Source of Bntwaplage Stress
نویسنده
چکیده
Introduction. The once popular idea that changes in planetary volume play an important role in terrestrial orogeny and tectonics [ I ,2] was generally discarded with the acceptance of plate tectonics. It is nonetheless likely that the Earth has been steadily cooling over the last 3-4 billion years [e.g., 3,4], and the global contraction that accompanied such cooling would have led to a secular decrease in the radius of curvature of the plates. We explore here the implications of this global cooling and contraction for the intraplate stress field and the evolution of continental plates.
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