History Of Geology

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2 domain-specific abstractions whose origin domain is History Of Geology.

• Expanding Earth — An obsolete geophysical hypothesis that continental separation resulted from a substantial increase in Earth's radius or volume, superseded by plate tectonics and modern geodesy.
• Tetrahedral Hypothesis — A historically important but rejected Earth model that explained the asymmetry of continents and oceans by making a cooling, contracting globe buckle slightly toward a tetrahedral form, with land on rounded edges and corners and ocean basins on faces.