Researchers Linked Lunar Volcanism to Mantle Composition
A study published in August 2026 revealed how ilmenite concentrations drove volcanic activity on the Moon.
Updated on Sept. 24, 2026 in Geology
Live Poll
Should nations prioritize funding research into the geological history of the moon?
Researchers determined that higher ilmenite content in the Moon's near-side mantle lowered melting temperatures, explaining why 93% of lunar maria basalt is found there. The findings, published in August 2026, compared samples from the Chang'e 5 and Chang'e 6 missions.
Why it matters
Understanding the unique mantle composition of the Moon helps geologists explain the asymmetric distribution of volcanic activity between the near and far sides. This discovery clarifies how internal mineral makeup influenced the cooling and volcanic history of the lunar surface.
The study utilized samples from the Chang'e 6 far-side landing and Chang'e 5 near-side collection. Near-side mantle materials contain 16-32% ilmenite, while far-side counterparts range from 13-24%.
The players
Peking University
This Chinese research institution played a significant role in the geological analysis of lunar samples.
Hong Kong University
Researchers from this university contributed to the comparative study of lunar far-side and near-side mantle materials.
Brown University
This American research university collaborated on the geochemical study published in the Journal of Geophysical Research: Planets.
The details
By tracing the mantle sources of basalt samples, scientists found that the higher ilmenite content on the near side enabled rocks to melt at temperatures 20-30 degrees Celsius lower than those on the far side. This geochemical variance provides a concrete mechanism for the long-observed imbalance in lunar maria distribution.
Timeline
Volcanic activity persisted on the moon's far side until 2.8 billion years ago.
A research team published their study findings in August 2026.
The Big Picture
This discovery updates geological models established by the Chang'e lunar exploration program by identifying specific mineralogical drivers for lunar volcanism. The findings shift the prevailing understanding of lunar evolution from a uniform cooling process to one driven by lateral geochemical variation.
While this research focuses on the Moon, it provides critical data for scientists developing models of planetary formation and internal thermal evolution. Improved knowledge of lunar composition assists researchers in planning future space exploration and identifying high-value resource regions.
The takeaway
The chemical makeup of the lunar mantle dictated where and when volcanic eruptions occurred over billions of years. Researchers believe studying additional far-side locations is the next step to confirming if this mantle composition theory holds true for the entire moon.
Further reading
For more on the history of our satellite, visit the Geology section.
More information
Read the complete Journal of Geophysical Research study regarding lunar mantle composition.
Source note: This article includes information reported by 조선일보.
Live Poll
Should nations prioritize funding research into the geological history of the moon?
