Science

Seismic analysis reveals ancient traces of mantle flow beneath the Pacific's oldest plate

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Briefings

Ocean-bottom seismic instruments captured 'fossilized' mantle flow patterns beneath the Pacific's oldest crustal plate, revealing complex traces of ancient mantle deformation. These patterns track tectonic plate motion and upwelling hotspots, with a specific focus on a sunken remnant of the lithosphere. The findings indicate that the mantle's flow dynamics have persisted and evolved over geological time, preserving signatures of past geological events within the uppermost mantle.

Key points

• Seismic data from ocean-bottom instruments captured 'fossilized' traces of mantle flow beneath the Pacific's oldest preserved crustal plate.
• The ancient flow patterns track changes in tectonic plate motion and mantle deformation around a sunken remnant of the lithosphere.

Context and limitations

Data represents a single snapshot of seismic activity and is limited to the Pacific Ocean's oldest crustal plate. The study does not provide temporal resolution for the entire geological history or quantify the exact duration of the observed mantle flow.

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