ArticleScience advances2026
Buried fragments reveal a "Greater Gondwana" supercontinent.
Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Profound global biogeochemical shifts marked the Ediacaran-Cambrian transition [550-500 million years (Ma)], a phenomenon often ascribed to the dynamics of supercontinent cycles. However, Gondwana is frequently denied supercontinent status due to its perceived spatial deficit (∼64% of continental landmass). Leveraging continental-scale Nd isotopic mapping based on a vast database of 25,346 felsic-intermediate igneous rocks, we reveal extensive buried Precambrian terranes beneath Phanerozoic orogens in Asia, Europe, and North America. Our results expand Gondwana's reconstructed area to ∼80% of the global landmass, firmly establishing its identity as a true supercontinent-termed "Greater Gondwana." We propose that the assembly and peripheral subduction of this "Greater Gondwana" played a pivotal role in driving the geodynamic and environmental perturbations that culminated in the Cambrian metazoan radiation.
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