A new study expands on recent research which suggests that oceanic crust accumulates in the mid-mantle. The new seismological constraints advance our understanding of thermo-chemical planetary evolution.
seafloor
Posted inNews
Uma Ilha Tropical Há Muito Perdida Fica no Litoral do Brasil
Um platô vulcânico submerso no sudoeste do Atlântico foi uma ilha tropical há 45 milhões de anos.
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Model Suggests Undersea Mountains Help Mix the Global Ocean
Seamounts may play a significant role in ocean turbulence and the upwelling of deep waters.
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Lost City’s Plumbing Exposed by the Longest Mantle Core Ever Drilled
The core, which is 71% complete, reveals millions of years of geologic history and the plumbing underlying hydrothermal vents.
Posted inResearch Spotlights
Exploring an Underwater Volcano from 16,000 Kilometers Away
Measurements of Hunga volcano’s crater continued for months after its 2022 eruption.
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Scientists Are “Gobsmacked” by the Variability of Seafloor Currents
The speed and direction of deep currents off Mozambique’s coast are more subject to change than scientists expected.
Posted inFeatures
Sensing Remote Realms of the Deep Ocean on Earth—and Beyond
A novel laser-equipped probe is collecting measurements of deep-sea geochemical environments that once seemed impossible to gather, pointing the way toward future explorations of other ocean worlds.
Posted inFeatures
Exploring New Zealand’s Remote Fjords
Doing research in Fiordland—a vast territory of mountains, forests, and fiords in southwest New Zealand—takes ingenuity, collaboration, and a really good raincoat.
Posted inNews
Metallic Nodules Create Oxygen in the Ocean’s Abyss
These nodules, a focus of seabed mining interests, could be natural “geobatteries” and play a larger-than-expected role in the deep-sea ecosystem.