Scientists Reveal Hidden Mantle Superhighways Beneath Tonga
A breakthrough study has provided the most detailed 3D look yet at the inner workings of the Tonga Subduction Zone, where ...
EurekAlert!16d
Advanced seismic imaging deciphers mantle dynamics beneath Tonga subduction zone
(b) Schematic diagram of the upper mantle structure beneath the Tonga-Lau ... a high-resolution 3D velocity model extending to 300 km depth. Rigorous validation through checkerboard and restoring ...
Nature1mon
Layer cake or plum pudding?
The potential compositional boundary was typically put at 660 km depth, corresponding to the major seismic discontinuity that marks the boundary between the upper mantle and lower mantle.
Phys.org1y
New proof that Earth's plate tectonics recently underwent a fundamental change
The transition between the upper and lower mantle occurs at about 660 km below Earth's surface. At this depth certain minerals undergo a phase transition. Deng and colleagues believe that this ...
DLR24d
Mars's northern ice cap is young with a cold, stiff mantle beneath
The ice sheet is bending the rocky crust beneath at a rate of 0.13 millimetres per year. Mars's upper mantle is stiff, with a viscosity 10 to 100 times higher than Earth's. Focus: Planetary research, ...