[REVISION HISTORY]

Thermal asymmetry and magmatic systems in Martian mantle

Updated 1 time since CLSTR started tracking revisions of this situation.

What changed

2026-08-29 10:15 UTC → 2026-09-02 01:23 UTC · added ~~removed~~

Research led by the University of Arizona has identified a significant thermal disparity within the Martian interior. By utilizing tidal tomography to analyze gravitational data from the Mars Global Surveyor, Mars Odyssey, and Mars Reconnaissance Orbiter missions, scientists determined that the mantle in the southern hemisphere may be between 200 °C and 400 °C warmer than the northern hemisphere. Some areas within the southern mantle may be partially molten. This internal thermal contrast mirrors the planet’s surface asymmetry, where the south features high mountains and deep craters while the north consists of smoother, low-lying plains. This temperature difference may also account for observed magnetic anomalies and seismic wave scattering on Mars. Expanding on these findings, researchers from the University of Oxford have utilized data from NASA’s InSight lander to identify evidence of a vast, interconnected deep magmatic system. This discovery suggests that Mars may possess a complex, layered crust developed through magmatic differentiation, even in the absence of Earth-like plate tectonics. These combined insights into the planet's magmatic systems and hemispheric thermal anomalies may further explain Martian volcanic activity and historical habitability.

Versions

Only revisions since CLSTR began indexing content versions appear here. Select a version to see what changed compared to the one before it.