Tag: mantle

Arctic sea ice levels second lowest on record for January: US data

OCEANOGRAPHY05/02/2025

The sea ice in the Arctic was the second lowest on record for January last month, according to a US analysis released Tuesday, with areas around Greenland seeing temperatures well above average. Both the North and South...

Hawaii volcano produces tall lava fountaining in latest episode of Kilauea eruption

VOLCANOES05/02/2025

A fountain of lava was spewing from a Hawaii volcano Tuesday in the latest episode of an eruption that has paused and resumed. Fountains from a vent of the Kilauea volcano on Hawaii's Big Island grew to more...

New parameter enhances insights into the evolution of mantle’s redox states

VOLCANOES13/08/2024

The oxygen fugacity (fO2) of the mantle controls the speciation and mobility of volatiles within it, influencing the composition of volatiles released during mantle-derived...

How mantle movements shape Earth’s surface

EARTH03/05/2024

The movement of tectonic plates shapes the rocky features of Earth's surface. Plates' convergence can form mountain ranges or ocean trenches, and their divergence...

Mantle heat may have boosted Earth’s crust 3 billion years ago

EARTH25/04/2024

Little is known about the nature and evolution of Earth's continental crust before a few billion years ago because cratons, or stable swaths of...

Giant mantle plume reveals Mars is more active than previously thought

MARS05/12/2022

On Earth, shifting tectonic plates reshuffle the planet's surface and make for a dynamic interior, so the absence of such processes on Mars led...

Mapping the chemistry of the Earth’s mantle

EARTH03/12/2022

The Earth's mantle makes up about 85% of the Earth's volume and is made of solid rock. But exactly what rock types is the...

Potential mechanism for olivine to carry boron into the Earth’s deep mantle

EARTH14/06/2022

Olivine is an important component of Earth's upper mantle. The effect of boron on the properties of olivine has been previously ignored since boron...