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A chemically distinct region separates the Indian and Pacific mantle domains as revealed by isotope analyses on rare samples from the Australian–Antarctic Ridge.
A magnitude 7.5 strike-slip earthquake that struck Palu, Indonesia, in 2018 unexpectedly generated a devastating tsunami. Seismic data reveal that its rupture propagated fast, at supershear speed. Whether the two are connected remains to be seen.
Transition from a weak and erratic geomagnetic field to a more stable one around 560 million years ago, inferred from palaeomagnetic measurements, suggests that the inner core may have solidified around that time, much later than thought.
Cumulative wildfires or prescribed burning produce different outcomes for the vegetation, suggest two long-term analyses of fire-affected ecosystems. Climate change and land management practices are altering how ecosystems function.
Differences between earthquake sequences in the crust and adjacent uppermost mantle at oceanic transform faults are revealed by a seafloor seismic experiment at the Blanco Transform Fault.
