Ancient Gondwana Expanded: Isotope Mapping Suggests It Spanned 80% of Earth’s Crust
TL;DR
Isotope-based basement maps mapped by Curtin University reveal hidden Gondwanan crust beneath Asia, Europe and North America, boosting Gondwana’s share to about 80% of Earth’s continental crust and defining a larger landmass called Greater Gondwana. The study also uncovers a ~32,000 km belt of subduction and volcanism around Gondwana around 525–500 million years ago, a tectonic reorganization that may have influenced climate and coincided with the Cambrian explosion.
Topics:sciencediscoveries#continental-crust#discoveries#gondwana#greater-gondwana#sm-nd-isotopes#supercontinent
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- New maps reveal hidden landscapes inside a prehistoric supercontinent Scientific American
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- Gondwana Really Was a Supercontinent Yahoo
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