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Earth’s crust

Photo of the Apennine Mountains in Italy.
Posted inEditors' Highlights

Topography Along the Apennines Reflects Subduction Dynamics

by Duna Roda-Boluda 15 March 202313 March 2023

Topography and exhumation vary strongly along the Apennines, reflecting the geometry of the Moho and different geodynamic mechanisms.

A volcano with two snow-dusted peaks in an arid landscape with a cloudless blue sky.
Posted inResearch Spotlights

Mapping the Fizzy Brines and Fluid-Filled Fractures Below a Volcano

by Sarah Stanley 9 March 202320 March 2023

Seismic tools reveal where hydrothermal fluids lie beneath the Uturuncu volcano in Bolivia and hint at their composition.

一个球形海底地震仪下降到海面
Posted inResearch Spotlights

小尺度对流搅动大洋岩石圈

by Sarah Derouin 6 March 20236 March 2023

海底扩张将岩石圈矿物组织成一个晶格,但小规模的对流混杂在最内层。

Photo of a rock outcrop
Posted inEditors' Vox

The Seven-Ages of Earth as Seen Through the Continental Lens

by Peter A. Cawood and Priyadarshi Chowdhury 24 February 20236 March 2023

The 4.5-billion-year record contained in Earth’s continental crust reveals a seven-phase evolution, from an initial magma ocean to the present-day environment in which we live.

An orb-shaped ocean bottom seismometer descending into the sea surface
Posted inResearch Spotlights

Small-Scale Convection Shuffles the Oceanic Lithosphere

by Sarah Derouin 21 February 20236 March 2023

Seafloor spreading organized lithospheric minerals into a lattice, but small-scale convection jumbled up the innermost layer.

Two block diagrams that show how the George Sound shear zone (GSSZ) grew through the crust in space and time.
Posted inEditors' Highlights

Feedbacks Between Deformation and Magmatism as Shear Zones Grow

by Alexis Ault 29 September 202228 September 2022

New research reveals how the presence and absence of magmatism governs how shear zones initiate, grow, and reactivate to connect lower and upper crustal deformation.

Artistic impression of an orange-colored early Earth
Posted inNews

Early Life Learned to Love Oxygen Long Before It Was Cool

by Jennifer Schmidt 16 September 202221 February 2023

Laboratory experiments show that earthquakes may have helped early life evolve in an oxygen-free world.

Posted inResearch Spotlights

New Map of Proposed Mantle-Driven Topography Stirs the Pot

by Rebecca Dzombak 8 September 202221 February 2023

The role the deep Earth plays in creating topography is hotly debated. A new study uses subtle elevation changes around the globe as evidence that the mantle plays a key role in building topography.

Photo of Cerro Aconcagua, the highest mountain in the Americas
Posted inEditors' Vox

Old Igneous Rocks Hold the Key to Crustal Thickness Evolution

by Peter Luffi and Mihai Ducea 7 September 202229 September 2022

The chemical composition of orogenic igneous rocks and their zircons is sensitive to crustal thickness and can be used to quantify the evolution of Moho depths beneath continents back in time.

Posted inEditors' Highlights

Zircons and Plate Tectonics

by Vincent Salters 29 April 20223 May 2022

New data on ancient zircons points to a transition from stagnant lid to subduction style tectonics at 3.6 Ga ago.

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