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The late Mesozoic two giant events that have synchronously occurred in the Pacific and periphery are the tectono magmatic activities of the Circum Pacific mobile belt and the Darwin Rise. Their dynamics analysis indicates that the geodynamics responsible for Pacific genesis has been driven by the gravity instability between a Pacific wide superplume head and its lithospheric overburden under the influence of eastward asthenospheric flow by the Earth spin. The worldwide activation of mafic magmatism was initiated in the Paleozoic and climaxed around the Jurassic. The separated not worldwide distribution of the magmatism on the Earth suggests the inhomogeneous reheating of upper mantle, as represented by the Pacific wide superplume head. The Phanerozoic reheating thus put forward the Earth history into a new geotectonic stage, i.e., the diwa stage.
The late Mesozoic two giant events that have synchronized occurred in the Pacific and periphery are the tectono magmatic activities of the Circum Pacific mobile belt and the Darwin Rise. Their dynamics analysis indicates that the geodynamics responsible for Pacific genesis has been driven by the gravity instability between a Pacific wide superplume head and its lithospheric overburden under the influence of eastward asthenospheric flow by the Earth spin. The worldwide activation of mafic magmatism was initiated in the Paleozoic and climaxed around the Jurassic. The separated not the distribution of the magmatism on the Earth suggests. the inhomogeneous reheating of upper mantle, as represented by the Pacific wide superplume head. The Phanerozoic reheating thus put forward the earth history into a new geotectonic stage, ie, the diwa stage.